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=Astro-ph list=

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=20 Jun 2012:=

[|arXiv:1206.4090] [ [|pdf], [|ps] , [|other] ] Interstellar extinction and interstellar polarization: old and new models [|N. V. Voshchinnikov]   Comments: Accepted for publication in Journal of Quantitative Spectroscopy and Radiative Transfer (Special issue, Electromagnetic and Light Scattering XIII, Taormina, 2011), 48 pages, 14 figures  Subjects: Galaxy Astrophysics (astro-ph.GA) ; Cosmology and Extragalactic Astrophysics (astro-ph.CO) [|arXiv:1206.4063] [ [|pdf], [|ps] , [|other] ] Heavily Obscured Quasar Host Galaxies at z~2 are Disks, Not Major Mergers [|Kevin Schawinski], [|Brooke D. Simmons] , [|Megan Urry] , [|Ezequiel Treister] , [|Eilat Glikman]   Comments: 5 pages, 4 figures, 1 table. To appear as a Letter in MNRAS Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO) ; High Energy Astrophysical Phenomena (astro-ph.HE) [|arXiv:1206.4057] [ [|pdf], [|ps] , [|other]] The Nature of Hypervelocity Stars and the Time Between Their Formation and Ejection [|Warren R. Brown] (1), [|Judith G. Cohen] (2), [|Margaret J. Geller] (1), [|Scott J. Kenyon] (1) ((1) Smithsonian, (2) Caltech)  Comments: 6 pages, accepted to ApJ Letters  Subjects: Galaxy Astrophysics (astro-ph.GA) ; Solar and Stellar Astrophysics (astro-ph.SR) [|arXiv:1206.4050] [ [|pdf], [|ps] , [|other] ] Ultra-Luminous Supernovae as a New Probe of the Interstellar Medium in Distant Galaxies [|E. Berger], [|R. Chornock] , [|R. Lunnan] , [|R. Foley] , [|I. Czekala] , [|A. Rest] , [|C. Leibler] , [|A. M. Soderberg] , [|K. Roth] , [|G. Narayan] , [|M. E. Huber] , [|D. Milisavljevic] , [|N. E. Sanders] , [|M. Drout] , [|R. Margutti] , [|R.P. Kirshner] , [|G. H. Marion] , [|P. J. Challis] , [|A. G. Riess] , [|S. J. Smartt] , [|W. S. Burgett] , [|J. N. Heasley] , [|N. Kaiser] , [|R.-P. Kudritzki] , [|E. A. Magnier] , [|M. McCrum] , [|P. A. Price] , [|K. Smith] , [|J. L. Tonry] , [|R. J. Wainscoat]   Comments: Submitted to ApJL; 9 pages; 4 figures; 1 table  Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO) =19 Jun 2012:=

[|arXiv:1206.4033] [ [|pdf], [|ps] , [|other] ] X-Ray emission from SN 2004dj: A Tale of Two Shocks [|Sayan Chakraborti], [|Naveen Yadav], [|Alak Ray] , [|Randall Smith] , [|Poonam Chandra]   Comments: 9 pages, 7 figures, 1 table  Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) ; Cosmology and Extragalactic Astrophysics (astro-ph.CO) [|arXiv:1206.3651] [ [|pdf], [|ps] , [|other] ] Interstellar absorptions and shocked clouds towards supernova remnant RX J0852.0-4622 [|Yu.V.Pakhomov], [|N.N.Chugai] , [|A.F.Iyudin]   Comments: accepted in MNRAS Subjects: Solar and Stellar Astrophysics (astro-ph.SR) [|arXiv:1206.3646] [ [|pdf], [|ps] , [|other] ] Type-Ia Supernova Remnant Shell At $Z=3.5$ Seen In The Three Sightlines Toward The Gravitationally Lensed Qso B1422+231  [|Satoshi Hamano] , [|Naoto Kobayashi] , [|Sohei Kondo] , [|Takuji Tsujimoto] , [|Katsuya Okoshi] , [|Toshikazu Shigeyama]   Comments: 16 pages, 15 figures, to be published in The Astrophysical Journal Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO) ; Galaxy Astrophysics (astro-ph.GA)

= = =23 May - 18 Jun 2012:=

[|arXiv:1205.0387] [ [|pdf], [|ps] , [|other] ] The properties of the 2175AA extinction feature discovered in GRB afterglows [|Tayyaba Zafar] (1,2), [|Darach Watson] (1), [|Ardis Eliasdottir] (1), [|Johan P. U. Fynbo] (1), [|Thomas Kruhler] (1,3), [|Patricia Schady] (3), [|Giorgos Leloudas] (1), [|Pall Jakobsson] (4), [|Christina C. Thone] (5), [|Daniel A. Perley] (6), [|Adam N. Morgan] (6), [|Joshua Bloom] (6), [|Jochen Greiner] (3) ((1) DARK, (2) LAM, (3) MPI, (4) Univ. of Iceland (5) Univ. of California)  Comments: 9 pages, 8 figures, 3 tables, accepted to ApJ  Journal-ref: ApJ, 753, 82 (2012)  Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO) [|arXiv:1206.0005] [ [|pdf], [|ps] , [|other] ] Dust extinction bias in the column density distribution of gamma-ray bursts; high column density, low redshift GRBs are more heavily obscured  [|Darach Watson] (1), [|Páll Jakobsson] (2) ((1) Dark Cosmology Centre, U. Copenhagen (2) University of Iceland)  Comments: 7 pages, 3 figures. Accepted for publication in ApJ, 1 August 2012 Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO) [|arXiv:1206.0011] [ [|pdf], [|other] ] Star Formation in Galaxy Mergers with Realistic Models of Stellar Feedback & the Interstellar Medium  [|Philip F. Hopkins] (Berkeley), [|Thomas J. Cox] (Carnegie), [|Lars Hernquist] (Harvard), [|Desika Narayanan] (Steward), [|Christopher C. Hayward] (Heidelberg), [|Norman Murray] (CITA)  Comments: 17 pages (+appendices), 20 figures, submitted to MNRAS. Movies of the simulations are available at [|this https URL] Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO) ; Galaxy Astrophysics (astro-ph.GA); High Energy Astrophysical Phenomena (astro-ph.HE); Solar and Stellar Astrophysics (astro-ph.SR)

[|arXiv:1206.0215] [ [|pdf], [|ps] , [|other] ] Non-thermal excitation and ionization in supernovae [|Chengdong Li] , [|D. John Hillier] , [|Luc Dessart]   Comments: 18 pages, 22 figures, accepted to MNRAS Subjects: Solar and Stellar Astrophysics (astro-ph.SR) [|arXiv:1206.0465] [ [|pdf], [|ps] , [|other] ] The delay-time distribution of type-Ia supernovae from Sloan II  [|Dan Maoz] , [|Filippo Mannucci] , [|Timothy D. Brandt]   Comments: MNRAS, submitted Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO) [|arXiv:1206.0470] [ [|pdf], [|other] ] Tidal Novae in Compact Binary White Dwarfs  [|Jim Fuller] , [|Dong Lai]   Comments: 5 pages, 3 figures, Submitted to ApJL Subjects: Solar and Stellar Astrophysics (astro-ph.SR) ; High Energy Astrophysical Phenomena (astro-ph.HE)

[|arXiv:1206.0558] [ [|pdf], [|ps] , [|other] ] Can Ground-based Telescopes Detect The Oxygen 1.27 Micron Absorption Feature as a Biomarker in Exoplanets ? [|Hajime Kawahara], [|Taro Matsuo] , [|Michihiro Takami] , [|Yuka Fujii] , [|Takayuki Kotani] , [|Naoshi Murakami] , [|Motohide Tamura] , [|Olivier Guyon]  Comments: 11 pages, 9 figures, submitted to ApJ Subjects: Earth and Planetary Astrophysics (astro-ph.EP) [|arXiv:1206.0665] [ [|pdf], [|ps] , [|other] ] Evolution in the Volumetric Type Ia Supernova Rate from the Supernova Legacy Survey  [|K. Perrett] , [|M. Sullivan] , [|A. Conley] , [|S. Gonzalez-Gaitan] , [|R. Carlberg] , [|D. Fouchez] , [|P. Ripoche] , [|J. D. Neill] , [|P. Astier] , [|D. Balam] , [|C. Balland] , [|S. Basa] , [|J. Guy] , [|D. Hardin] , [|I. M. Hook] , [|D. A. Howell] , [|R. Pain] , [|N. Palanque-Delabrouille] , [|C. Pritchet] , [|N. Regnault] , [|J. Rich] , [|V. Ruhlmann-Kleider] , [|S. Baumont] , [|C. Lidman] , [|S. Perlmutter] , [|E. S. Walker]   Comments: Accepted in AJ Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO) ; Solar and Stellar Astrophysics (astro-ph.SR)

[|arXiv:1206.0712] [ [|pdf] ] Solar diameter with 2012 Venus transit: history and opportunities [|Costantino Sigismondi] Comments: 6 pages, 3 figures, presented on 7 June 2012 h 15 to the NAOC,National Astronomical Observatories of China,Chinese Academy of Science, Room 601, A20 Datun Road, Chaoyang District, 100012 Beijing Subjects: Solar and Stellar Astrophysics (astro-ph.SR) ; Earth and Planetary Astrophysics (astro-ph.EP)

[|arXiv:1206.0764] [ [|pdf], [|other] ] Probing the Structure of Jet Driven Core-Collapse Supernova and Long Gamma Ray Burst Progenitors with High Energy Neutrinos [|Imre Bartos] , [|Basudeb Dasgupta] , [|Szabolcs Marka]   Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) ; High Energy Physics - Experiment (hep-ex); High Energy Physics - Phenomenology (hep-ph)

[|arXiv:1206.1054] [ [|pdf], [|ps] , [|other] ] Dust in a Type Ia Supernova Progenitor: Spitzer Spectroscopy of Kepler's Supernova Remnant [|Brian J. Williams] , [|Kazimierz J. Borkowski] , [|Stephen P. Reynolds] , [|Parviz Ghavamian] , [|William P. Blair] , [|Knox S. Long] , [|Ravi Sankrit]   Comments: Accepted by ApJ. 11 pages, 5 figures, 1 table. Produced using emulateapj format Subjects: Galaxy Astrophysics (astro-ph.GA) ; High Energy Astrophysical Phenomena (astro-ph.HE)

[|arXiv:1206.1056] [ [|pdf], [|ps] , [|other] ] White Dwarf Kinematics vs Mass [|Christopher Wegg] , [|E. Sterl Phinney]   Comments: 14 pages, 15 figures. Accepted by MNRAS Subjects: Galaxy Astrophysics (astro-ph.GA) [|arXiv:1206.1059] [ [|pdf], [|other] ] Thermodynamics of nuclear condensates and phase transitions in white dwarfs  [|Paulo F. Bedaque] , [|Evan Berkowitz] , [|Srimoyee Sen]   Comments: 10 pages, 10 figures Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) ; High Energy Physics - Phenomenology (hep-ph); Nuclear Theory (nucl-th)

[|arXiv:1206.1064] [ [|pdf], [|ps] , [|other] ] The Palomar Transient Factory photometric catalog 1.0 [|E. O. Ofek] , [|R. Laher] , [|J. Surace] , [|D. Levitan] , [|B. Sesar] , [|A. Horesh] , [|N. Law] , [|J. C. van Eyken] , [|S. R. Kulkarni] , [|T. A. Prince] , [|P. Nugent] , [|M. Sullivan] , [|O. Yaron] , [|A. Pickles] , [|M. Agueros] , [|I. Arcavi] , [|L. Bildsten] , [|J. Bloom] , [|S. B. Cenko] , [|A. Gal-Yam] , [|C. Grillmair] , [|G. Helou] , [|M. M. Kasliwal] , [|D. Poznanski] , [|R. Quimby]   Comments: 6 pages, 6 figures, PASP in press Subjects: Instrumentation and Methods for Astrophysics (astro-ph.IM) [|arXiv:1206.1086] [ [|pdf], [|ps] , [|other] ] Interplay of Neutrino Opacities in Core-collapse Supernova Simulations  [|Eric J. Lentz] , [|Anthony Mezzacappa] , [|O.E. Bronson Messer] , [|W. Raphael Hix] , [|Stephen W. Bruenn]   Comments: 11 pages, 15 figures, submitted to ApJ Subjects: Solar and Stellar Astrophysics (astro-ph.SR) [|arXiv:1206.1130] [ [|pdf], [|ps] , [|other] ] The GALEX view of the Herschel Reference Survey - Ultraviolet structural properties of nearby galaxies  [|L. Cortese] , [|S. Boissier] , [|A. Boselli] , [|G. J. Bendo] , [|V. Buat] , [|J. I. Davies] , [|S. Eales] , [|S. Heinis] , [|K. G. Isaak] , [|S. C. Madden]   Comments: 32 pages, 8 figures, 5 tables. Accepted for publication in A&amp;A. Data are available at [|this http URL] Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO) [|arXiv:1206.1199] [ [|pdf], [|ps] , [|other] ] Astrophysical Particle Simulations on Heterogeneous CPU-GPU Systems  [|Naohito Nakasato] , [|Go Ogiya] , [|Yohei Miki] , [|Masao Mori] , [|Ken'ichi Nomoto]   Subjects: Instrumentation and Methods for Astrophysics (astro-ph.IM) ; Performance (cs.PF); Computational Physics (physics.comp-ph)

[|arXiv:1206.1314] [ [|pdf], [|ps] , [|other] ] Core-collapse supernovae missed by optical surveys [|S. Mattila] , [|T. Dahlen] , [|A. Efstathiou] , [|E. Kankare] , [|J. Melinder] , [|A. Alonso-Herrero] , [|M.A. Perez-Torres] , [|S. Ryder] , [|P. Vaisanen] , [|G. Ostlin]   Comments: 16 pages, 5 figures, to appear in ApJ, including revision following referee's report Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO) [|arXiv:1206.1328] [ [|pdf], [|other] ] The Very Young Type-Ia SN 2012cg: Discovery and Pre-Maximum Brightness Follow-Up  [|Jeffrey M. Silverman] , [|Mohan Ganeshalingam] , [|S. Bradley Cenko] , [|Alexei V. Filippenko] , [|Weidong Li] , [|Aaron J. Barth] , [|Daniel J. Carson] , [|Michael Childress] , [|Kelsey I. Clubb] , [|Antonino Cucchiara] , [|Melissa L. Graham] , [|G. H. Marion] , [|My L. Nguyen] , [|Liuyi Pei] , [|Brad E. Tucker] , [|Jozsef Vinko] , [|J. Craig Wheeler] , [|Gabor Worseck]   Comments: submitted to ApJL, 4 figures, 1 table Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO) [|arXiv:1206.1605] [ [|pdf], [|ps] , [|other] ] Merging White Dwarfs and Thermonuclear Supernovae [|Marten H. van Kerkwijk] (Toronto)  Comments: 8 pages, 1 figures, to be published in Phil. Tr. A, proc. of New windows on transients across the Universe, ed. P. O'Brien et al Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) [|arXiv:1206.1791] [ [|pdf], [|ps] , [|other] ] A Precision Photometric Comparison between SDSS-II and CSP Type Ia Supernova Data  [|J. Mosher] , [|M. Sako] , [|L. Corlies] , [|G. Folatelli] , [|J. Frieman] , [|J. Holtzman] , [|S. W. Jha] , [|R. Kessler] , [|J. Marriner] , [|M. M. Phillips] , [|M. Stritzinger] , [|N. Morrell] , [|D. P. Schneider]   Comments: This paper has been accepted for publication in The Astronomical Journal Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO) ; Instrumentation and Methods for Astrophysics (astro-ph.IM)

[|arXiv:1206.1858] [ [|pdf], [|other] ] VLT Spectropolarimetry of the Type Ia SN2005ke - A step towards understanding subluminous events [|F. Patat] , [|P. Hoeflich] , [|D. Baade] , [|J. R. Maund] , [|L. Wang] , [|J. C. Wheeler]   Comments: 16 pages, 14 figures. Accepted for publication in Astronomy and Astrophysics Subjects: Solar and Stellar Astrophysics (astro-ph.SR) [|arXiv:1206.2029] [ [|pdf], [|ps] , [|other] ] Caltech Core-Collapse Project (CCCP) Observations of Type II Supernovae: Evidence for Three Distinct Photometric Subtypes  [|Iair Arcavi] , [|Avishay Gal-Yam], [|S. Bradley Cenko] , [|Derek B. Fox] , [|Douglas C. Leonard] , [|Dae-Sik Moon] , [|David J. Sand] , [|Alicia M. Soderberg] , [|Michael Kiewe] , [|Ofer Yaron] , [|Adam B. Becker] , [|Raphael Scheps] , [|Gali Birenbaum] , [|Daniel Chamudot] , [|Jonathan Zhou]   Comments: Submitted to ApJL Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO) ; Solar and Stellar Astrophysics (astro-ph.SR)

[|arXiv:1206.2210] [ [|pdf], [|ps] , [|other] ] Type Ia Supernova Properties as a Function of the Distance to the Host Galaxy in the SDSS-II SN Survey [|Lluis Galbany], [|Ramon Miquel] , [|Linda Ostman] , [|Peter J. Brown] , [|David Cinabro] , [|Chris B. D'Andrea] , [|Joshua Frieman] , [|Saurabh W. Jha] , [|John Marriner] , [|Robert C. Nichol] , [|Jakob Nordin] , [|Matthew D. Olmstead] , [|Masao Sako] , [|Donald P. Schneider] , [|Mathew Smith] , [|Jesper Sollerman] , [|Kaike Pan] , [|Stephanie Snedden] , [|Dmitry Bizyaev] , [|Howard Brewington] , [|Elena Malanushenko] , [|Viktor Malanushenko] , [|Dan Oravetz] , [|Audrey Simmons] , [|Alaina Shelden]  Comments: Accepted for publication in The Astrophysical Journal (33 pages, 5 figures, 8 tables) Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO) [|arXiv:1206.2503] [ [|pdf], [|ps] , [|other] ] Explosion Mechanisms of Core-Collapse Supernovae  [|H.-Thomas Janka] (Max Planck Institute for Astrophysics, Garching)  Comments: 35 pages, 11 figures (29 eps files; high-quality versions can be obtained upon request); accepted by Annual Review of Nuclear and Particle Science Subjects: Solar and Stellar Astrophysics (astro-ph.SR) ; General Relativity and Quantum Cosmology (gr-qc); High Energy Physics - Phenomenology (hep-ph); Nuclear Theory (nucl-th)

[|arXiv:1206.2643] [ [|pdf], [|ps] , [|other] ] A Spectroscopic Study of Type Ibc Supernova Host Galaxies from Untargeted Surveys [|Nathan E. Sanders] (1), [|Alicia M. Soderberg] (1), [|Emily M. Levesque] (2), [|Ryan J. Foley] (1), [|Ryan Chornock] (1), [|Dan Milisavljevic] (1), [|Raffaella Margutti] (1), [|Edo Berger] (1), [|Maria R. Drout] (1), [|Ian Czekala] (1), [|Jason A. Dittmann] (1) ((1) Harvard-Smithsonian Center for Astrophysics, (2) University of Colorado)  Comments: 28 pages, 13 Figures, ApJ Submitted, more information at [|this http URL] Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) ; Cosmology and Extragalactic Astrophysics (astro-ph.CO)

[|arXiv:1206.3467] [ [|pdf], [|ps] , [|other] ] Astrobiological Complexity with Probabilistic Cellular Automata [|B. Vukotić] , [|M. M. Ćirković]   Comments: 37 pages, 11 figures, 2 tables; "Origins of Life and Evolution of Biospheres," accepted for publication Subjects: Instrumentation and Methods for Astrophysics (astro-ph.IM) ; Cellular Automata and Lattice Gases (nlin.CG); Computational Physics (physics.comp-ph)

=9 - 22 May 2012:=

[|arXiv:1205.1563] [ [|pdf], [|other] ] On the thermodynamic self-similarity of the nearest, most relaxed, giant ellipticals [|N. Werner], [|S. W. Allen] , [|A. Simionescu]   Comments: accepted for publication in MNRAS  Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO) ; High Energy Astrophysical Phenomena (astro-ph.HE) [|arXiv:1205.1936] [ [|pdf], [|ps] , [|other] ] Star formation in bulgeless late type galaxies: clues to their evolution [|M. Das] (IIA), [|C. Sengupta] (CSIC and CAO), [|S. Ramya] (IIA), [|K. Misra] (STScI)  Comments: 12 pages, 14 figures, to appear in MNRAS Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO) [|arXiv:1205.2064] [ [|pdf], [|ps] , [|other] ] Statistical Methods for Astronomy  [|Eric D. Feigelson] , [|G. Jogesh Babu]   Comments: 48 pages, 2 figures. Adapted from `Statistical Methods for Astronomy' to appear in `Astronomical Techniques, Software, and Data', volume 2 (Howard Bond, editor) of `Planets, Stars, and Stellar Systems' (Terry Ostwalt, editor) to be published by Springer Science+Business Media Subjects: Instrumentation and Methods for Astrophysics (astro-ph.IM) ; Applications (stat.AP) [|arXiv:1205.2395] [ [|pdf], [|ps] , [|other] ] Type Ib/c Supernovae with and without Gamma-Ray Bursts [|Maryam Modjaz] (NYU)  Comments: 5 pages, 2 Figures. To appear in the Proceedings of IAU Symposium 279 "Death of Massive Stars: Supernovae and Gamma-ray Bursts". Contains updates with respect to Modjaz et al (2011) Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO) ; High Energy Astrophysical Phenomena (astro-ph.HE) [|arXiv:1205.2452] [ [|pdf], [|ps] , [|other] ] The birth rate of SNe Ia from DD systems and CD systems [|Xiangcun Meng] , [|Wuming Yang]   Comments: 11 pages, 8 figures, accepted for publication in A&amp;A; [|submit/0472675] Subjects: Solar and Stellar Astrophysics (astro-ph.SR) [|arXiv:1205.2538] [ [|pdf], [|other] ] Lithium production in the merging of white dwarf stars  [|Richard Longland] , [|Pablo Lorén-Aguilar] , [|Jordi José] , [|Enrique García-Berro] , [|Leandro G. Althaus]   Comments: 6 Pages, 2 Figures. To be published in Astronomy and Astrophysics Subjects: Solar and Stellar Astrophysics (astro-ph.SR) [|arXiv:1205.2706] [ [|pdf], [|other] ] A New Method to Constrain Supernova Fractions Using X-ray Observations of Clusters of Galaxies  [|Esra Bulbul] , [|Randall K. Smith] , [|Michael Loewenstein]   Comments: 10 pages, 5 figures, Accepted for publication in the Astrophysical Journal Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO) [|arXiv:1205.2708] [ [|pdf], [|ps] , [|other] ] An Efficient Parameter Space Search as an Alternative to Markov Chain Monte Carlo  [|Scott F. Daniel] , [|Andrew J. Connolly] , [|Jeff Schneider]   Comments: 15 pages; 26 figures; submitted to MNRAS Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO) ; Instrumentation and Methods for Astrophysics (astro-ph.IM) [|arXiv:1205.2954] [ [|pdf], [|ps] , [|other] ] Gamma-Ray Bursts are precise distance indicators similar to Type Ia Supernovae? [|Ryo Tsutsui], [|Takashi Nakamura] , [|Daisuke Yonetoku] , [|Keitaro Takahashi] , [|Yoshiyuki Morihara]  Comments: 12 pages, 5 figures. Submitted to JCAP. Some references added Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO) [|arXiv:1205.3160] [ [|pdf], [|ps] , [|other] ] Violation of Chandrasekhar Mass Limit: The Exciting Potential of Strongly Magnetized White Dwarfs [|Upasana Das] , [|Banibrata Mukhopadhyay]   Comments: 9 pages including 4 figures; received Honorable Mention for the Gravity Research Foundation 2012 Awards for Essays on Gravitation Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) ; Solar and Stellar Astrophysics (astro-ph.SR); General Relativity and Quantum Cosmology (gr-qc); Nuclear Theory (nucl-th) [|arXiv:1205.3168] [ [|pdf], [|ps] , [|other] ] The Absence of Ex-Companions in Type Ia Supernova Remnants [|R. Di Stefano] , [|Mukremin Kilic]   Comments: 6 pages, submitted to ApJ Subjects: Solar and Stellar Astrophysics (astro-ph.SR) ; Galaxy Astrophysics (astro-ph.GA) [|arXiv:1205.3365] [ [|pdf], [|ps] , [|other] ] Everything You Always Wanted To Know About The Cosmological Constant Problem (But Were Afraid To Ask) [|Jerome Martin] (Institut d'Astrophysique de Paris)  Comments: 89 pages, 14 figures, Accepted review article to appear in a special volume of the "Comptes Rendus de l'Academie des Sciences" about Dark Energy and Dark Matter Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO) ; General Relativity and Quantum Cosmology (gr-qc); High Energy Physics - Phenomenology (hep-ph); High Energy Physics - Theory (hep-th) [|arXiv:1205.3455] [ [|pdf], [|ps] , [|other] ] Superluminous Light Curves from Supernovae Exploding in a Dense Wind [|Sivan Ginzburg] , [|Shmuel Balberg] (The Hebrew University)  Comments: 13 pages Subjects: Solar and Stellar Astrophysics (astro-ph.SR) [|arXiv:1205.3491] [ [|pdf], [|ps] , [|other] ] The Dominance of Neutrino-Driven Convection in Core-Collapse Supernovae  [|Jeremiah W. Murphy] , [|Joshua C. Dolence] , [|Adam Burrows]   Comments: Submitted to the Astrophysical Journal Subjects: Solar and Stellar Astrophysics (astro-ph.SR) [|arXiv:1205.3493] [ [|pdf], [|other] ] Extending BEAMS to correlated photometric supernova data  [|Michelle Knights] , [|Bruce A. Bassett] , [|Melvin Varughese] , [|Renée Hlozek] , [|Martin Kunz] , [|Mat Smith] , [|James Newling]   Comments: 21 pages, 7 figures Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO) ; General Relativity and Quantum Cosmology (gr-qc) [|arXiv:1205.3494] [ [|pdf], [|ps] , [|other] ] Precision Measurement of The Most Distant Spectroscopically Confirmed Supernova Ia with the Hubble Space Telescope [|D. Rubin] , [|R. A. Knop] , [|E. Rykoff] , [|G. Aldering] , [|R. Amanullah] , [|K. Barbary] , [|M. S. Burns] , [|A. Conley] , [|N. Connolly] , [|S. Deustua] , [|V. Fadeyev] , [|H. K. Fakhouri] , [|A. S. Fruchter] , [|R. A. Gibbons] , [|G. Goldhaber] , [|A. Goobar] , [|E. Y. Hsiao] , [|X. Huang] , [|M. Kowalski] , [|C. Lidman] , [|J. Meyers] , [|J. Nordin] , [|S. Perlmutter] , [|C. Saunders] , [|A. L. Spadafora] , [|V. Stanishev] , [|N. Suzuki] , [|L. Wang]   Comments: 7 pages, 4 figures, submitted to ApJL. Minor wording changes Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO) [|arXiv:1205.3657] [ [|pdf], [|ps] , [|other] ] Progenitor-Explosion Connection and Remnant Birth Masses for Neutrino-Driven Supernovae of Iron-Core Progenitors  [|Marcella Ugliano] (1), [|H.-Thomas Janka] (1), [|Andreas Marek] (1), [|Almudena Arcones] (2,3) ((1) MPI for Astrophysics, Garching, (2) TU Darmstadt, (3) GSI Darmstadt)  Comments: 9 pages, 6 figures (7 eps files); submitted to Astrophys. J Subjects: Solar and Stellar Astrophysics (astro-ph.SR) [|arXiv:1205.3738] [ [|pdf], [|ps] , [|other] ] Multi-wavelength Observations of the Type IIb Supernova 2009mg  [|S. R. Oates] , [|A. J. Bayless] , [|M. D. Stritzinger] , [|T. Prichard] , [|J. L. Prieto] , [|S. Immler] , [|P. J. Brown] , [|A. A. Breeveld] , [|M. De Pasquale] , [|N. P. M. Kuin] , [|M. Hamuy] , [|S. T Holland] , [|F. Taddia] , [|P. W. A. Roming]   Comments: 10 pages, 8 figures, accepted for publication in MNRAS Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) [|arXiv:1205.3802] [ [|pdf], [|ps] , [|other] ] Progenitor mass constraints for core-collapse supernovae from correlations with host galaxy star formation  [|J. P. Anderson] , [|S. M. Habergham] , [|P. A. James] , [|M. Hamuy]   Comments: 22 pages, 13 figures. Accepted for publication in MNRAS. The abstract has been edited to fit within arXiv.org submission requirements Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO) [|arXiv:1205.3828] [ [|pdf], [|ps] , [|other] ] The Infrared Light Curve of SN 2011fe in M101 and the Distance to M101  [|T. Matheson] , [|R. R. Joyce] , [|L. E. Allen] , [|A. Saha] , [|D. R. Silva] , [|W. M. Wood-Vasey] , [|J. J. Adams] , [|R. E. Anderson] , [|T. L. Beck] , [|M. C. Bentz] , [|M. A. Bershady] , [|W. S. Binkert] , [|K. Butler] , [|M. A. Camarata] , [|A. Eigenbrot] , [|M. Everett] , [|J. S. Gallagher] , [|P. M. Garnavich E. Glikman] , [|D. Harbeck] , [|J. R. Hargis] , [|H. Herbst] , [|E. P. Horch] , [|S. B. Howell] , [|S. Jha] , [|J. F. Kaczmarek] , [|P. Knezek] , [|E. Manne-Nicholas] , [|R. D. Mathieu] , [|M. Meixner] , [|K. Milliman] , [|J. Power] , [|J. Rajagopal] , [|K. Reetz] , [|K. L. Rhode] , [|A. Schechtman-Rook] , [|M. E. Schwamb] , [|H. Schweiker] , [|B. Simmons] , [|J. D. Simon] , [|D. Summers] , [|M. D. Young] , [|A. Weyant] , [|E. M. Wilcots] , [|G. Will] , [|D. Williams]   Comments: 9 pages, 3 figures, emulateapj style, accepted for publication in The Astrophysical Journal Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO) [|arXiv:1205.4111] [ [|pdf], [|ps] , [|other] ] Three-Dimensional Explosion Geometry of Stripped-Envelope Core-Collapse Supernovae. I. Spectropolarimetric Observations [|Masaomi Tanaka], [|Koji S. Kawabata] , [|Takashi Hattori] , [|Paolo A. Mazzali] , [|Kentaro Aoki] , [|Masanori Iye] , [|Keiichi Maeda] , [|Ken'ichi Nomoto] , [|Elena Pian] , [|Toshiyuki Sasaki] , [|Masayuki Yamanaka]   Comments: Accepted for publication in ApJ, 10 pages Subjects: Solar and Stellar Astrophysics (astro-ph.SR) ; High Energy Astrophysical Phenomena (astro-ph.HE) [|arXiv:1205.4493] [ [|pdf], [|ps] , [|other] ] CfA4: Light Curves for 94 Type Ia Supernovae [|Malcolm Hicken] , [|Peter Challis] , [|Robert P. Kirshner] , [|Armin Rest] , [|Claire E. Cramer] , [|W. Michael Wood-Vasey] , [|Gaspar Bakos] , [|Perry Berlind] , [|Warren R. Brown] , [|Nelson Caldwell] , [|Mike Calkins] , [|Thayne Currie] , [|Kathy de Kleer] , [|Gil Esquerdo] , [|Mark Everett] , [|Emilio Falco] , [|Jose Fernandez] , [|Andrew S. Friedman] , [|Ted Groner] , [|Joel Hartman] , [|Matthew J. Holman] , [|Robert Hutchins] , [|Sonia Keys] , [|David Kipping] , [|Dave Latham] , [|George H. Marion] , [|Gautham Narayan] , [|Michael Pahre] , [|Andras Pal] , [|Wayne Peters] , [|Gopakumar Perumpilly] , [|Ben Ripman] , [|Brigitta Sipocz] , [|Andrew Szentgyorgyi] , [|Sumin Tang] , [|Manuel A. P. Torres] , [|Amali Vaz] , [|Scott Wolk] , [|Andreas Zezas]   Comments: 43 pages Journal-ref: ApJS, 200 (2012) 12 Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO) [|arXiv:1205.3480] (cross-list from math-ph) [ [|pdf], [|other] ] All solutions of the n = 5 Lane-Emden equation [|Patryk Mach]  Comments: To appear in Journal of Mathematical Physics Subjects: Mathematical Physics (math-ph) ; Solar and Stellar Astrophysics (astro-ph.SR); General Relativity and Quantum Cosmology (gr-qc) =2 May - 9 May 2012:=

[|arXiv:1205.1480] [ [|pdf], [|other] ] Type Ia Supernovae Selection and Forecast of Cosmology Constraints for the Dark Energy Survey [|Eda Gjergo], [|Jefferson Duggan] , [|John D. Cunningham] , [|Steve Kuhlmann] , [|Rahul Biswas] , [|Eve Kovacs] , [|Joseph P. Bernstein] , [|Harold Spinka]   Comments: submitted to JCAP, 23 pages, 36 pictures  Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO) [|arXiv:1205.1066] [ [|pdf], [|ps] , [|other] ] Detection of Ongoing Star Formation at Low Levels in Nearby Elliptical Galaxies [|H. Alyson Ford], [|Joel N. Bregman]   Comments: 14 pages, 10 figures Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO) [|arXiv:1205.0966] [ [|pdf], [|ps] , [|other] ] On Simulating Type Ia Supernovae [|Alan C. Calder], [|Brendan K. Krueger] , [|Aaron P. Jackson] , [|Dean M. Townsley] , [|Edward F. Brown] , [|Francis X. Timmes]   Comments: 13 pages, 3 figures, accepted to proceedings of the Conference on Computational Physics, Oct. 30 - Nov. 3, 2011 Subjects: Solar and Stellar Astrophysics (astro-ph.SR) ; High Energy Astrophysical Phenomena (astro-ph.HE)

[|arXiv:1205.0814] [ [|pdf], [|ps] , [|other] ] A Physical Model for SN 2001ay, a normal, bright, extremely slowly declining Type Ia supernova [|E. Baron], [|P. Hoeflich] , [|K. Krisciunas] , [|I. Dominguez] , [|A. M. Khokhlov] , [|M. M. Phillips] , [|N. Suntzeff] , [|L. Wang]   Comments: 35 pages, 14 figures, ApJ, in press Subjects: Solar and Stellar Astrophysics (astro-ph.SR) [|arXiv:1205.0588] [ [|pdf], [|ps] , [|other] ] The Production Rate of SN Ia Events in Globular Clusters  [|Pearce C. Washabaugh] , [|Joel N. Bregman]   Comments: 28 pages, 5 figures; ApJ submitted Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) ; Cosmology and Extragalactic Astrophysics (astro-ph.CO)

[|arXiv:1205.0571] [ [|pdf], [|ps] , [|other] ] The locations of SNe Ib/c and their comparison to those of WR stars and GRBs [|Giorgos Leloudas] Comments: 8 pages, 2 Figures. To appear in the Proceedings of IAU Symposium 279 "Death of Massive Stars: Supernovae and Gamma-ray Bursts" (eds. P. Roming, N. Kawai, E. Pian). Contains updates with respect to Leloudas et al. (2010) Subjects: Solar and Stellar Astrophysics (astro-ph.SR) [|arXiv:1205.0353] [ [|pdf], [|ps] , [|other] ] SN 2009kn - The Twin of the Type IIn SN 1994W  [|E. Kankare] , [|M. Ergon] , [|F. Bufano] , [|J. Spyromilio] , [|S. Mattila] , [|N. N. Chugai] , [|P. Lundqvist] , [|A. Pastorello] , [|R. Kotak] , [|S. Benetti] , [|M-T. Botticella] , [|R. J. Cumming] , [|C. Fransson] , [|M. Fraser] , [|G. Leloudas] , [|M. Miluzio] , [|J. Sollerman] , [|M. Stritzinger] , [|M. Turatto] , [|S. Valenti]   Comments: 21 pages, 19 figures, accepted for MNRAS Subjects: Solar and Stellar Astrophysics (astro-ph.SR) [|arXiv:1205.0282] [ [|pdf], [|other] ] A Distributed GPU-based Framework for real-time 3D Volume Rendering of Large Astronomical Data Cubes  [|A.H. Hassan] , [|C.J. Fluke] , [|D.G. Barnes]   Comments: 13 Pages, 7 figures, has been accepted for publication in Publications of the Astronomical Society of Australia Subjects: Instrumentation and Methods for Astrophysics (astro-ph.IM) ; Distributed, Parallel, and Cluster Computing (cs.DC); Graphics (cs.GR)

= = =26 Apr - 1 May 2012:=

[|arXiv:1205.0167] [ [|pdf], [|ps] , [|other] ] The chemical diversity of exo-terrestrial planetary debris around white dwarfs [|B.T. Gaensicke], [|D. Koester] , [|J. Farihi] , [|J. Girven] , [|S.G. Parsons] , [|E. Breedt]   Comments: MNRAS in press, 15 pages, 7 Figures  Subjects: Earth and Planetary Astrophysics (astro-ph.EP) [|arXiv:1205.0015] [ [|pdf], [|ps] , [|other] ] The Type II Supernova Rate in z~0.1 Galaxy Clusters from the Multi-Epoch Nearby Cluster Survey  [|M. L. Graham] , [|D. J. Sand] , [|C. J. Bildfell] , [|C. J. Pritchet] , [|D. Zaritsky] , [|H. Hoekstra] , [|D. W. Just] , [|S. Herbert-Fort] , [|S. Sivanandam] , [|R. J. Foley]   Comments: 16 pages, 5 tables, 6 figures, 2 appendices; accepted to ApJ Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO) [|arXiv:1205.0004] [ [|pdf], [|ps] , [|other] ] Scars of Intense Accretion Episodes at Metal-Rich White Dwarfs  [|J. Farihi] , [|B. T. Gänsicke] , [|M. A. Wyatt] , [|J. Girven] , [|J. E. Pringle] , [|A. R. King]   Comments: 9 pages, 4 figures, 2 tables, accepted to MNRAS Subjects: Solar and Stellar Astrophysics (astro-ph.SR) ; Earth and Planetary Astrophysics (astro-ph.EP)

[|arXiv:1204.6109] [ [|pdf], [|ps] , [|other] ] Light Curve Modeling of Superluminous Supernova 2006gy: Collision between Supernova Ejecta and Dense Circumstellar Medium [|Takashi J. Moriya] , [|Sergei I. Blinnikov] , [|Nozomu Tominaga] , [|Naoki Yoshida] , [|Masaomi Tanaka] , [|Keiichi Maeda] , [|Ken'ichi Nomoto]   Comments: 17 pages, 19 figures, 2 tables, submitted to Monthly Notices of the Royal Astronomical Society Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) [|arXiv:1204.6109] [ [|pdf] , [|ps] , [|other] ]

[|arXiv:1204.6101] [ [|pdf], [|ps] , [|other] ] A public database for white dwarf asteroseismology with fully evolutionary models: I. Chemical profiles and pulsation periods of ZZ Ceti (DAV) stars [|Alejandra D. Romero] , [|Alejandro H. Córsico] , [|Leandro G. Althaus] , [|Marcelo M. Miller Bertolami]   Comments: 10 pages, 4 figures, 1 table Subjects: Solar and Stellar Astrophysics (astro-ph.SR) [|arXiv:1204.5849] [ [|pdf], [|ps] , [|other] ] A New MHD Code with Adaptive Mesh Refinement and Parallelization for Astrophysics  [|R. L. Jiang] , [|C. Fang] , [|P. F. Chen]   Comments: 44 pages, 16 figures Subjects: Instrumentation and Methods for Astrophysics (astro-ph.IM) ; Solar and Stellar Astrophysics (astro-ph.SR)

[|arXiv:1204.5711] [ [|pdf], [|other] ] Rossby wave instability at dead zone boundaries in 3D resistive magnetohydrodynamical global models of protoplanetary disks [|Wladimir Lyra] , [|Mordecai-Mark Mac Low]   Comments: 9 pages, 7 figures, submitted to ApJ. Comments welcome Subjects: Earth and Planetary Astrophysics (astro-ph.EP) [|arXiv:1204.5478] [ [|pdf], [|ps] , [|other] ] The observed neutron star mass distribution as a probe of the supernova explosion mechanism  [|Ondrej Pejcha] , [|Todd A. Thompson] , [|Christopher S. Kochanek]   Comments: 13 pages, 7 figures, 2 tables. For a brief video explaining the key results of this paper, see [|this http URL] Subjects: Solar and Stellar Astrophysics (astro-ph.SR) ; High Energy Astrophysical Phenomena (astro-ph.HE) [|arXiv:1204.5719] [ [|pdf], [|other] ] A New Reddening Law for M4 [|Benjamin Hendricks] , [|Peter B. Stetson] , [|Don A. VandenBerg] , [|Massimo Dall'Ora]   Comments: 24 pages, 19 figures, 13 tables Subjects: Galaxy Astrophysics (astro-ph.GA)

=24-25 Apr 2012:=

[|arXiv:1204.4919] [ [|pdf], [|ps] , [|other] ] GRB Progenitors and Observational Criteria [|Bing Zhang] (UNLV)  Comments: Invited talk at IAU Symposium 279: "Death of Massive Stars: Supernovae and Gamma-Ray Bursts". To appear in the Proceedings IAU Symposium 279, (eds. P. Roming, N. Kawai, E. Pian). 8 pages Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) [|arXiv:1204.4842] [ [|pdf], [|ps] , [|other] ]

Numerical Recipes For Multidimensional Simulations of Stellar Explosions [|Ke-Jung Chen] (1,2), [|Alexander Heger] (1), [|Ann Almgren] (3) ((1) UMinn, (2) KITP, (3) LBNL)  Comments: 12 pages, 10 figures, submitted to Geophysical and Astrophysical Fluid Dynamics  Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) ; Computational Physics (physics.comp-ph)

[|arXiv:1204.4779] [ [|pdf], [|other] ] Paraiso : An Automated Tuning Framework for Explicit Solvers of Partial Differential Equations [|Takayuki Muranushi]   Comments: 44 pages, 12 figures, submitted  Subjects: Instrumentation and Methods for Astrophysics (astro-ph.IM) ; Distributed, Parallel, and Cluster Computing (cs.DC); Neural and Evolutionary Computing (cs.NE)

=23-19 Apr 2012:=

[|arXiv:1204.4703] [ [|pdf], [|ps] , [|other] ] Fermi-LAT Observation of Supernova Remnant S147 [|Junichiro Katsuta], [|Yasunobu Uchiyama] , [|Takaaki Tanaka] , [|Hiroyasu Tajima] , [|Keith Bechtol] , [|Stefan Funk] , [|Joshua Lande] , [|Jean Ballet] , [|Yoshitaka Hanabata] , [|Marianne Lemoine-Goumard] , [|Tadayuki Takahashi]   Comments: 12 pages, accepted for publication in ApJ  Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) [|arXiv:1204.4358] [ [|pdf], [|ps] , [|other] ] Two distributions shedding light on supernova Ia progenitors: delay times and G-dwarf metallicities  [|N. Mennekens] , [|D. Vanbeveren] , [|J.P. De Greve] , [|E. De Donder]   Comments: 4 pages, 3 figures, to appear in proceedings of "IAUS 281: Binary Paths to Type Ia Supernovae Explosions" Subjects: Solar and Stellar Astrophysics (astro-ph.SR) [|arXiv:1204.4320] [ [|pdf], [|other] ] The Search for Supernova-produced Radionuclides in Terrestrial Deep-sea Archives  [|Jenny Feige] , [|Anton Wallner] , [|Stephan R. Winkler], [|Silke Merchel] , [|L. Keith Fifield] , [|Gunther Korschinek] , [|Georg Rugel] , [|Dieter Breitschwerdt]   Subjects: Solar and Stellar Astrophysics (astro-ph.SR) [|arXiv:1204.4261] [ [|pdf], [|ps] , [|other] ] Differential rotation of main-sequence dwarfs: predicting the dependence on surface temperature and rotation rate  [|L. L. Kitchatinov] , [|S. V. Olemskoy]   Comments: 8 pages,8 figures, 1 table, submitted to MNRAS Subjects: Solar and Stellar Astrophysics (astro-ph.SR) [|arXiv:1204.4219] [ [|pdf], [|other] ] An Absence of Neutrinos Associated with Cosmic Ray Acceleration in Gamma-Ray Bursts  [|IceCube Collaboration] : [|R. Abbasi] , [|Y. Abdou] , [|T. Abu-Zayyad] , [|M. Ackermann] , [|J. Adams] , [|J. A. Aguilar] , [|M. Ahlers] , [|D. Altmann] , [|K. Andeen] , [|J. Auffenberg] , [|X. Bai] , [|M. Baker] , [|S. W. Barwick] , [|R. Bay] , [|J. L. Bazo Alba] , [|K. Beattie] , [|J. J. Beatty] , [|S. Bechet] , [|J. K. Becker] , [|K.-H. Becker] , [|M. Bell] , [|M. L. Benabderrahmane] , [|S. BenZvi] , [|J. Berdermann] , [|P. Berghaus] , [|D. Berley] , [|E. Bernardini] , [|D. Bertrand D. Z. Besson] , [|D. Bindig] , [|M. Bissok] , [|E. Blaufuss] , [|J. Blumenthal] , [|D. J. Boersma] , [|C. Bohm] , [|D. Bose] , [|S. Böser] , [|O. Botner] , [|L. Brayeur] , [|A. M. Brown] , [|S. Buitink] , [|K. S. Caballero-Mora] , [|M. Carson] , [|M. Casier] , [|D. Chirkin] , [|B. Christy] , [|F. Clevermann] , [|S. Cohen] , [|C. Colnard] , [|D. F. Cowen] , [|A. H. Cruz Silva] , [|M. V. D'Agostino] , [|M. Danninger] , [|J. Daughhetee] , [|J. C. Davis] , [|C. De Clercq] , [|T. Degner] , [|F. Descamps] , [|P. Desiati] , [|G. de Vries-Uiterweerd] , et al. (202 additional authors not shown)  Comments: 6 pages, 4 figures. As submitted to Nature; differs in minor aspects from the published version. Additional supplementary information (effective areas) is freely available with the final published version Journal-ref: Nature 484 (2012), 351-354 Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) [|arXiv:1204.4213] [ [|pdf], [|ps] , [|other] ] First Evidence of Globular Cluster Formation from the Ejecta of Prompt Type Ia Supernovae  [|Takuji Tsujimoto] , [|Kenji Bekki]   Comments: 5 pages including 3 figures, accepted for publication in ApJ Letters Subjects: Galaxy Astrophysics (astro-ph.GA)

=12 - 18 Apr 2012:=

[|arXiv:1204.3634] [ [|pdf], [|ps] , [|other] ] The Local Environments of Core-Collapse SNe within Host Galaxies [|Joseph P Anderson], [|Stacey M Habergham] , [|Phil A James] , [|M Hamuy]   Comments: to appear in Proceedings of IAU 279 "Death of Massive Stars: Supernovae and Gamma-ray Bursts"  Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO) [|arXiv:1204.3626] [ [|pdf], [|ps] , [|other] ] The Star Formation Rate Function for Redshift z~4-7 Galaxies: Evidence for a Uniform Build-Up of Star-Forming Galaxies During the First 3 Gyr of Cosmic Time  [|R. Smit] (1), [|R. J. Bouwens] (1), [|M. Franx] (1), [|G. D. Illingworth] (2), [|I. Labbé] (1), [|P. A. Oesch] (2), [|P. G. van Dokkum] (3) ((1) Leiden Observatory, Leiden University, (2) UCO/Lick Observatory, University of California, Santa Cruz, (3) Department of Astronomy, Yale University)  Comments: 6 pages, 4 figures, 1 table, resubmitted to ApJ letters after responding to referee report Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO) [|arXiv:1204.3567] [ [|pdf], [|other] ] The supernova-regulated ISM. I. The multi-phase structure [|F. A. Gent], [|A. Shukurov] , [|A. Fletcher] , [|G. R. Sarson] , [|M. J. Mantere]   Subjects: Galaxy Astrophysics (astro-ph.GA) [|arXiv:1204.3565] [ [|pdf], [|ps] , [|other] ] White dwarfs as physics laboratories: the case of axions  [|J. Isern] , [|L. Althaus] , [|S. Catalan] , [|A. Corsico] , [|E. Garcia-Berro] , [|M. Salaris] , [|S. Torres]   Comments: 4 pages, 1 figure. Proceedings for the 7th Patras Workshop on Axions, WIMPs and WISPs (PATRAS 2011), Mykonos, Greece, June 27 - July 1, 2011 Subjects: Solar and Stellar Astrophysics (astro-ph.SR) ; High Energy Physics - Phenomenology (hep-ph)

[|arXiv:1204.3552] [ [|pdf], [|ps] , [|other] ] Star Formation in the Milky Way and Nearby Galaxies [|Robert C. Kennicutt Jr.] , [|Neal J. Evans II]   Comments: 55 pages, 15 figures, in press for Annual Reviews of Astronomy and Astrophysics Subjects: Galaxy Astrophysics (astro-ph.GA) ; Cosmology and Extragalactic Astrophysics (astro-ph.CO)

[|arXiv:1204.3300] [ [|pdf], [|other] ] Common Envelope Evolution Leading to Supernovae with Dense Interaction [|Roger A. Chevalier] Comments: 11 pages, 1 fig Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) [|arXiv:1204.3154] [ [|pdf], [|ps] , [|other] ] Jets from Galactic binaries  [|Thomas J. Maccarone] (Southampton)  Comments: 6 pages, accepted to Proceedings of Science, invited review at "The Extreme and Variable High Energy Sky" conference, September 19-23, 2011 Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) [|arXiv:1204.3088] [ [|pdf], [|ps] , [|other] ] An Investigation into the Character of Pre-Explosion Core-Collapse Supernova Shock Motion  [|Adam Burrows] , [|Joshua C. Dolence] , [|Jeremiah W. Murphy]   Comments: Submitted to the Astrophysical Journal Subjects: Solar and Stellar Astrophysics (astro-ph.SR) [|arXiv:1204.3078] [ [|pdf], [|other] ] GK Per (Nova Persei 1901): HST Imagery and Spectroscopy of the Ejecta, and First Spectrum of the Jet-Like Feature  [|Michael M. Shara] , [|David Zurek] , [|Orsola De Marco] , [|Trisha Mizusawa] , [|Robert Williams] , [|Mario Livio]   Comments: 43 pages, 17 figures Subjects: Solar and Stellar Astrophysics (astro-ph.SR) [|arXiv:1204.2960] [ [|pdf], [|ps] , [|other] ] Theoretical Delay Time Distributions  [|Gijs Nelemans] , [|Silvia Toonen] , [|Madelon Bours]   Comments: To appear in proceedings of IAU Symposium no. 281 "Binary Paths to Type Ia Supernova Explosions", 5-10 July 2011, Padova, Italy Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) ; Solar and Stellar Astrophysics (astro-ph.SR)

[|arXiv:1204.2697] [ [|pdf], [|other] ] Magnetic fields in central stars of planetary nebulae? [|Stefan Jordan], [|Stefano Bagnulo] , [|Klaus Werner] , [|Simon J. O'Toole]  Comments: 5 pages, 2 figures, accepted for publication by Astronomy and Astrophysics Subjects: Solar and Stellar Astrophysics (astro-ph.SR) [|arXiv:1204.2560] [ [|pdf], [|ps] , [|other] ] Exploding SNe with jets: time-scales  [|Oded Papish] , [|Noam Soker] (Technion, Israel)  Comments: To appear in Death of Massive Stars: Supernovae and Gamma-Ray Bursts, Proceedings IAU Symposium No. 279, 2012, eds. P. Roming, N. Kawai &amp; E. Pian Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) [|arXiv:1204.2558] [ [|pdf], [|other] ] Empirical Determination of Convection Parameters in White Dwarfs I : Whole Earth Telescope Observations of EC14012-1446  [|J. L. Provencal] , [|M. H. Montgomery] , [|A. Kanaan] , [|S. E. Thompson] , [|J. Dalessio] , [|H. L. Shipman] , [|D. Childers] , [|J. C. Clemens] , [|R. Rosen] , [|P. Henrique] , [|A. Bischoff-Kim] , [|W. Strickland] , [|D. Chandler] , [|B. Walter] , [|T. K. Watson] , [|B. Castanheira] , [|S. Wang] , [|G. Handler] , [|M. Wood] , [|S. Vennes] , [|P. Nemeth] , [|S. O. Kepler] , [|M. Reed] , [|A. Nitta] , [|S. J. Kleinman] , [|T. Brown] , [|S. -L. Kim] , [|D. Sullivan] , [|Wen-Ping Chen] , [|M. Yang] , [|Chia-You Shih] , [|X. J. Jiang] , [|A. V. Sergeev] , [|A. Maksim] , [|R. Janulis] , [|K. S. Baliyan] , [|H. O. Vats] , [|S. Zola] , [|A. Baran] , [|M. Winiarski] , [|W. Ogloza] , [|M. Paparo] , [|Z. Bognar] , [|P. Papics] , [|D. Kilkenny] , [|R. Sefako] , [|D. Buckley] , [|N. Loaring] , [|A. Kniazev] , [|R. Silvotti] , [|S. Galleti] , [|T. Nagel] , [|G. Vauclair] , [|N. Dolez] , [|J. R. Fremy] , [|J. Perez] , [|J. M. Almenara] , [|L. Fraga]   Comments: Accepted for publication in the Astrophysical Journal Subjects: Solar and Stellar Astrophysics (astro-ph.SR) [|arXiv:1204.2417] [ [|pdf] , [|ps] , [|other] ] Metallicity effects on the cosmic SNIb/c and GRB rates [|V. Grieco], [|F. Matteucci] , [|G. Meynet] , [|F. Longo] , [|M. Della Valle] , [|R. Salvaterra]   Comments: Accepted for publication in Monthly Notices of the Royal Astronomical Society Main Journal, 2012 April 03 10 pages, 8 figures Subjects: Galaxy Astrophysics (astro-ph.GA) [|arXiv:1204.2308] [ [|pdf], [|other] ] Near-infrared observations of type Ia supernovae: The best known standard candle for cosmology  [|R. L. Barone-Nugent] , [|C. Lidman] , [|J. S. B. Wyithe] , [|J. Mould] , [|D. A. Howell] , [|I. M. Hook] , [|M. Sullivan] , [|P. E. Nugent] , [|I. Arcavi] , [|S. B. Cenko] , [|J. Cooke] , [|A. Gal-Yam] , [|E. Y. Hsiao] , [|M. M. Kasliwal] , [|K. Maguire] , [|E. Ofek] , [|D. Poznanski] , [|D. Xu]   Comments: 6 pages, 2 figures. Submitted to MNRAS Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO)

= = =11 Apr 2012:=

[|arXiv:1204.2070] [ [|pdf], [|ps] , [|other] ] On general relativistic uniformly rotating white dwarfs [|Kuantay Boshkayev], [|Jorge A. Rueda] , [|Remo Ruffini] , [|Ivan Siutsou]   Comments: Submitted to The Astrophysical Journal  Subjects: Solar and Stellar Astrophysics (astro-ph.SR) ; General Relativity and Quantum Cosmology (gr-qc); Nuclear Theory (nucl-th) [|arXiv:1204.1981] [ [|pdf], [|ps] , [|other] ] Sensitivity study of explosive nucleosynthesis in Type Ia supernovae: I. Modification of individual thermonuclear reaction rates [|Eduardo Bravo], [|Gabriel Martínez-Pinedo]   Comments: 33 pages, 15 figures, 22 tables, submitted to Physical Review C Subjects: Solar and Stellar Astrophysics (astro-ph.SR) ; Nuclear Theory (nucl-th)

[|arXiv:1204.1994] (cross-list from nucl-ex) [ [|pdf], [|ps] , [|other] ] GT strengths and electron-capture rates for pf-shell nuclei of relevance for late stellar evolution [|A.L. Cole], [|T.S. Anderson] , [|R.G.T. Zegers] , [|Sam M. Austin] , [|B.A. Brown] , [|L. Valdez] , [|S. Gupta] , [|G.W. Hitt] , [|O. Fawwaz]   Comments: 25 pages, 27 figures Subjects: Nuclear Experiment (nucl-ex) ; Solar and Stellar Astrophysics (astro-ph.SR); Nuclear Theory (nucl-th) = = =3 - 10 Apr 2012=

[|arXiv:1204.0028] [ [|pdf], [|ps] , [|other] ] The ELM Survey. IV. 24 White Dwarf Merger Systems [|Mukremin Kilic], [|Warren R. Brown] , [|Carlos Allende Prieto] , [|S. J. Kenyon] , [|Craig O. Heinke] , [|M. A. Agueros] , [|S. J. Kleinman]   Comments: ApJ, in press  Subjects: Galaxy Astrophysics (astro-ph.GA) ; Solar and Stellar Astrophysics (astro-ph.SR) [|arXiv:1204.0043] [[|pdf], [|ps], [|other]] SN 2011hw: Helium-Rich Circumstellar Gas and the Luminous Blue Variable to Wolf-Rayet Transition in Supernova Progenitors  [|Nathan Smith], [|Jon C. Mauerhan] , [|Jeffrey M. Silverman] , [|Mohan Ganeshalingam] , [|Alexei V. Filippenko] , [|S. Bradley Cenko] , [|Kelsey I. Clubb] , [|Michael Kandrashoff]   Comments: 11 pages, 7 figures, submitted to MNRAS Subjects: Solar and Stellar Astrophysics (astro-ph.SR) ; Cosmology and Extragalactic Astrophysics (astro-ph.CO); High Energy Astrophysical Phenomena (astro-ph.HE) [|arXiv:1204.0261] [ [|pdf], [|ps] , [|other] ] Gamma-Ray Bursts in Circumstellar Shells: A Possible Explanation for Flares [|Robert A. Mesler] , [|Daniel J. Whalen] , [|Nicole M. Lloyd-Ronning] , [|Chris L. Fryer] , [|Ylva M. Pihlström]   Comments: 12 pages, 5 figures, submitted to ApJ Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) [|arXiv:1204.0489] [ [|pdf] ] Presolar Grains from Novae: Evidence from Neon and Helium Isotopes in Comet Dust Collections  [|Robert O. Pepin], [|Russell L. Palma] , [|Robert D. Gehrz] , [|Sumner Starrfield]   Comments: As appeared in the Astrophysical Journal Journal-ref: Astrophysical Journal, Vol 742, Issue 2, Article 86, 2011 Subjects: Earth and Planetary Astrophysics (astro-ph.EP) ; Solar and Stellar Astrophysics (astro-ph.SR) [|arXiv:1204.0512] [[|pdf], [|other]] Correlated Gravitational Wave and Neutrino Signals from General-Relativistic Rapidly Rotating Iron Core Collapse [|C. D. Ott] (1), [|E. Abdikamalov] (1), [|E. O'Connor] (1), [|C. Reisswig] (1), [|R. Haas] (1), [|P. Kalmus] (1), [|S. Drasco] (2,1), [|A. Burrows] (3), [|E. Schnetter] (4) ((1) Caltech, (2) Cal Poly San Luis Obispo, (3) Princeton, (4) Perimeter Institute)  Comments: 29 pages, 14 figures Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) ; General Relativity and Quantum Cosmology (gr-qc) [|arXiv:1204.0527] [[|pdf], [|ps], [|other]] Time Dependent Radiative Transfer Calculations for Supernovae [|D. John Hillier], [|Luc Dessart]   Comments: 20 pages, 10 figures, to appear in MNRAS Subjects: Solar and Stellar Astrophysics (astro-ph.SR) [|arXiv:1204.0575] [ [|pdf], [|ps] , [|other] ] Physical origin of multi-wavelength emission of GRB 100418A and implications for its progenitor  [|Lan-Wei Jia] , [|Xue-Feng Wu] , [|Hou-Jun LV] , [|Shu-Jin Hou] , [|En-Wei Liang]   Comments: 8 pages, 3 figures, accepted for publication in Research in Astron. Astrophys Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) [|arXiv:1204.0583] [ [|pdf], [|ps] , [|other] ] GRB 100418A: a Long GRB without a Bright Supernova in a High-Metallicity Host Galaxy  [|Yuu Niino] , [|Tetsuya Hashimoto] , [|Kentaro Aoki] , [|Takashi Hattori] , [|Kiyoto Yabe] , [|Ken'ichi Nomoto]   Comments: 8 pages, 8 figures, submitted to PASJ Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) [|arXiv:1204.0632] [ [|pdf], [|ps] , [|other] ] Initial spin periods of neutron stars in supernova remnants  [|S.B. Popov] (SAI MSU), [|R. Turolla] (Univ. Padua, Mullard Space Science Lab. UCL)  Comments: 28 pages, subm. to Ap&amp;SS Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) [|arXiv:1204.0796] [ [|pdf], [|ps] , [|other] ] Optical and X-ray Transients from Planet-Star Mergers [|Brian D. Metzger] (Princeton), [|Dimitrios Giannios] (Princeton), [|David S. Spiegel] (IAS)  Comments: 20 pages, 11 figures, 2 tables, submitted to MNRAS Subjects: Earth and Planetary Astrophysics (astro-ph.EP) ; Galaxy Astrophysics (astro-ph.GA); High Energy Astrophysical Phenomena (astro-ph.HE); Solar and Stellar Astrophysics (astro-ph.SR) [|arXiv:1204.0857] [ [|pdf], [|ps] , [|other] ] Icecube non-detection of GRBs: Constraints on the fireball properties [|Hao-Ning He] , [|Ruo-Yu Liu] , [|Xiang-Yu Wang] , [|Shigehiro Nagataki] , [|Kohta Murase] , [|Zi-Gao Dai]   Comments: 14 pages, 5 figures, version resubmitted to ApJ after the referee report Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) [|arXiv:1204.0902] [ [|pdf], [|other] ] On the Change of the Inner Boundary of an Optically Thick Accretion Disk around White Dwarfs Using the Dwarf Nova SS Cyg as an Example  [|M. G. Revnivtsev] (1,2), [|R.A.Burenin] (1), [|A. Yu. Tkachenko] (1), [|I.M.Khamitov] (3), [|T. Ak] (3,4), [|A.Merloni] (2), [|M. N. Pavlinsky] (1), [|R. A. Sunyaev] (1,5) ((1) IKI, Moscow, Russia, (2) Excellence Cluster Universe, Garching, Germany, (3) TUBITAK National Observatory, (4) Istanbul University, Istanbul, Turkey, (5) MPA, Garching, Germany)  Comments: 9 pages, 7 figures, Published in Astronomy Letters Journal-ref: AstL, 2012, v.38, n.4, p.238 Subjects: Galaxy Astrophysics (astro-ph.GA) ; Solar and Stellar Astrophysics (astro-ph.SR) [|arXiv:1204.1155] [ [|pdf], [|ps] , [|other] ] Progenitors of type Ia supernovae [|Bo Wang] , [|Zhanwen Han]   Comments: 23 pages, 5 figures, invited review paper for New Astronomy Reviews, in press Subjects: Solar and Stellar Astrophysics (astro-ph.SR) [|arXiv:1204.1262] [ [|pdf], [|ps] , [|other] ] Strongly magnetized cold electron degenerate gas: Mass-radius relation of the magnetized white dwarf [|Upasana Das] , [|Banibrata Mukhopadhyay]   Comments: 23 pages including 6 figures Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) ; Cosmology and Extragalactic Astrophysics (astro-ph.CO); Solar and Stellar Astrophysics (astro-ph.SR); General Relativity and Quantum Cosmology (gr-qc); Nuclear Theory (nucl-th) [|arXiv:1204.1341] [ [|pdf], [|other] ] Light Echoes of Transients and Variables in the Local Universe [|A. Rest] , [|B. Sinnott] , [|D. L. Welch]   Comments: 18 pages, 7 figures, 1 table. Accepted for publication in PASA Subjects: Galaxy Astrophysics (astro-ph.GA) [|arXiv:1204.1523] [ [|pdf], [|ps] , [|other] ] Red and dead: The progenitor of SN 2012aw in M95  [|M. Fraser] , [|J. R. Maund] , [|S. J. Smartt] , [|M.-T. Botticella] , [|M. Dall'Ora] , [|C. Inserra] , [|L. Tomasella] , [|S. Benetti] , [|S. Ciroi] , [|J. J. Eldridge] , [|M. Ergon] , [|R. Kotak] , [|S. Mattila] , [|P. Ochner] , [|A. Pastorello] , [|E. Reilly] , [|J. Sollerman] , [|A. Stephens] , [|F. Taddia] , [|S. Valenti]   Comments: Submitted to ApJ Letters Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO) ; Solar and Stellar Astrophysics (astro-ph.SR) [|arXiv:1204.1610] [ [|pdf], [|ps] , [|other] ] Supernova 1998S at 14 years Postmortem: Continuing CSM Interaction and Dust Formation [|Jon Mauerhan] , [|Nathan Smith]   Subjects: Solar and Stellar Astrophysics (astro-ph.SR) ; High Energy Astrophysical Phenomena (astro-ph.HE) [|arXiv:1204.1655] [ [|pdf], [|ps] , [|other] ] R-process Nucleosynthesis during the Magnetohydrodynamics Explosions of a Massive Star [|Motoaki Saruwatari] , [|Masa-aki Hashimoto] , [|Kei Kotake] , [|Shoichi Yamada]   Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) [|arXiv:1204.1872] [ [|pdf] ] RR-Lyrae-type pulsations from a 0.26-solar-mass star in a binary system  [|G. Pietrzynski], [|I. B. Thompson] , [|W. Gieren] , [|D. Graczyk] , [|K. Stepien] , [|G. Bono] , [|P. G. Prada Moroni] , [|B. Pilecki] , [|A. Udalski] , [|I. Soszynski] , [|G. Preston] , [|N. Nardetto] , [|A. McWilliam] , [|I. Roederer] , [|M. Gorski] , [|P. Konorski] , [|J. Storm]   Journal-ref: Nature 484, 75-77 (05 April 2012) Subjects: Solar and Stellar Astrophysics (astro-ph.SR) [|arXiv:1204.1891] [ [|pdf], [|other] ] "WISEASS" - A State-of-the-art Interactive Supernova Spectroscopy Database [|Ofer Yaron] , [|Avishay Gal-Yam]   Comments: Submitted to PASP; comments welcome. [|this http URL] Subjects: Instrumentation and Methods for Astrophysics (astro-ph.IM) ; Cosmology and Extragalactic Astrophysics (astro-ph.CO); High Energy Astrophysical Phenomena (astro-ph.HE) [|arXiv:1204.1897] [[|pdf], [|ps], [|other]] Gamma Ray Bursts [|Peter Mészáros] Comments: Review of GRBs, prepared for Astropart.Phys. special issue on C.T.A. science, S. Sarkar, Ed Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) ; High Energy Physics - Phenomenology (hep-ph) [|arXiv:1204.1917] [ [|pdf], [|ps] , [|other] ] Spatially resolved kinematics of the central regions of M83: hidden mass signatures and the role of supernovae [|J. Piqueras López] (1), [|R. Davies] (2), [|L. Colina] (1), [|G. Orban de Xivry] (2) ((1) Centro de Astrobiología (INTA-CSIC), Spain, (2) Max-Planck-Institut für extraterrestrische Physik, Garching, Germany)  Comments: 14 pages, 10 figures, accepted for publication in ApJ Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO) ; Galaxy Astrophysics (astro-ph.GA) =27 Mar - 2 Apr 2012=

[|arXiv:1203.6847] [ [|pdf], [|ps] , [|other] ] Another thread in the tapestry of stellar feedback: X-ray binaries [|Stephen Justham], [|Kevin Schawinski]   Comments: Accepted for publication in MNRAS  Subjects: Galaxy Astrophysics (astro-ph.GA) [|arXiv:1203.6842] [ [|pdf], [|other] ] The stellar IMF at very low metallicities  [|Gustavo Dopcke] , [|Simon C. O. Glover] , [|Paul C. Clark] , [|Ralf S. Klessen]   Comments: 11 pages, 10 figues, submitted to ApJ. arXiv admin note: text overlap with [|arXiv:1101.4891] Subjects: Solar and Stellar Astrophysics (astro-ph.SR) ; Cosmology and Extragalactic Astrophysics (astro-ph.CO); Galaxy Astrophysics (astro-ph.GA)

[|arXiv:1203.6725] [ [|pdf], [|ps] , [|other] ] Five-Year Optical and Near Infrared Observations of the Extremely Slow Nova V1280 Scorpii [|H. Naito] , [|S. Mizoguchi] , [|A. Arai] , [|A. Tajitsu] , [|S. Narusawa] , [|M. Yamanaka] , [|M. Fujii] , [|T. Iijima] , [|K. Kinugasa] , [|M. Kurita] , [|T. Nagayama] , [|H. Yamaoka] , [|K. Sadakane]   Comments: 17 pages, 14 figures, accepted for publication in A&amp;A Subjects: Solar and Stellar Astrophysics (astro-ph.SR) [|arXiv:1203.6641] [ [|pdf], [|ps] , [|other] ] The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: measurements of the growth of structure and expansion rate at z=0.57 from anisotropic clustering  [|Beth A. Reid] , [|Lado Samushia] , [|Martin White] , [|Will J. Percival] , [|Marc Manera] , [|Nikhil Padmanabhan] , [|Ashley J. Ross] , [|Ariel G. Sánchez] , [|Stephen Bailey] , [|Dmitry Bizyaev] , [|Adam S. Bolton] , [|Howard Brewington] , [|J. Brinkmann] , [|Joel R. Brownstein] , [|Antonio J. Cuesta] , [|Daniel J. Eisenstein] , [|James E. Gunn] , [|Klaus Honscheid] , [|Elena Malanushenko] , [|Viktor Malanushenko] , [|Claudia Maraston] , [|Cameron K. McBride] , [|Demitri Muna] , [|Robert C. Nichol] , [|Daniel Oravetz] , [|Kaike Pan] , [|Roland de Putter] , [|N. A. Roe] , [|Nicholas P. Ross] , [|David J. Schlegel] , [|Donald P. Schneider] , [|Hee-Jong Seo] , [|Alaina Shelden] , [|Erin S. Sheldon] , [|Audrey Simmons] , [|Ramin A. Skibba] , [|Stephanie Snedden] , [|Molly E. C. Swanson] , [|Daniel Thomas] , [|Jeremy Tinker] , [|Rita Tojeiro] , [|Licia Verde] , [|David A. Wake] , [|Benjamin A. Weaver] , [|David H. Weinberg] , [|Idit Zehavi] , [|Gong-Bo Zhao]   Comments: 19 pages, 11 figures, submitted to MNRAS, comments welcome Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO) [|arXiv:1203.6629] [ [|pdf], [|ps] , [|other] ] Swift X-Ray Upper Limits on Type Ia Supernova Environments  [|Brock R. Russell] , [|Stefan Immler]   Comments: 5 pages, 1 figure, 1 table Journal-ref: B. R. Russell and S. Immler 2012 ApJ 748 L29 Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) [|arXiv:1203.6616] [ [|pdf], [|ps] , [|other] ] The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: cosmological implications of the large-scale two-point correlation function  [|Ariel G. Sanchez] , [|C.G. Scoccola] , [|A. J. Ross] , [|W. Percival] , [|M. Manera] , [|F. Montesano] , [|X. Mazzalay] , [|A. J. Cuesta] , [|D. J. Eisenstein] , [|E. Kazin] , [|C. K. McBride] , [|K. Mehta] , [|A. D. Montero-Dorta] , [|N. Padmanabhan] , [|F. Prada] , [|J. A. Rubino-Martin] , [|R. Tojeiro] , [|X. Xu] , [|M. Vargas Magana] , [|E. Aubourg] , [|N. A. Bahcall] , [|S. Bailey] , [|D. Bizyaev] , [|A. S. Bolton] , [|H. Brewington] , [|J. Brinkmann] , [|J. R. Brownstein] , [|J. Richard Gott III] , [|J. C. Hamilton] , [|S. Ho] , [|K. Honscheid] , [|A. Labatie] , [|E. Malanushenko] , [|V. Malanushenko] , [|C. Maraston] , [|D. Muna] , [|R. C. Nichol] , [|D. Oravetz] , [|K. Pan] , [|N. P. Ross] , [|N. A. Roe] , [|B. A. Reid] , [|D. J. Schlegel] , [|A. Shelden] , [|D. P. Schneider] , [|A. Simmons] , [|R. Skibba] , [|S. Snedden] , [|D. Thomas] , [|J. Tinker] , [|D. A. Wake] , [|B. A. Weaver] , [|David H. Weinberg] , [|Martin White] , [|I. Zehavi] , [|G. Zhao]   Comments: 26 pages, 15 figures. Submitted to MNRAS Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO) [54] [|arXiv:1203.6609] [ [|pdf], [|other] ]  The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: a large sample of mock galaxy catalogues  [|Marc Manera] , [|Roman Scoccimarro] , [|Will J. Percival] , [|Lado Samushia] , [|Cameron K. McBride] , [|Ashley Ross] , [|Ravi Sheth] , [|Martin White] , [|Beth Reid] , [|Ariel Sánchez] , [|Roland de Putter] , [|Xiaoying Xu] , [|Lauren Anderson] , [|Andreas A. Berlind] , [|Jonathan Brinkmann] , [|Bob Nichol] , [|Francesco Montesano] , [|Nikhil Padmanabhan] , [|Ramin A. Skibba1] , [|Rita Tojeiro] , [|Benjamin A. Weaver]   Comments: 21 pages, 18 figures Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO) [55] [|arXiv:1203.6594] [ [|pdf], [|other] ]  The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: Baryon Acoustic Oscillations in the Data Release 9 Spectroscopic Galaxy Sample  [|Lauren Anderson] , [|Eric Aubourg] , [|Stephen Bailey] , [|Dmitry Bizyaev] , [|Michael Blanton] , [|Adam S. Bolton] , [|J. Brinkmann] , [|Joel R. Brownstein] , [|Angela Burden] , [|Antonio J. Cuesta] , [|Luiz N. A. da Costa] , [|Kyle S. Dawson] , [|Roland de Putter] , [|Daniel J. Eisenstein] , [|James E. Gunn] , [|Hong Guo] , [|Jean-Christophe Hamilton] , [|Paul Harding] , [|Shirley Ho] , [|Klaus Honscheid] , [|Eyal Kazin] , [|D. Kirkby] , [|Jean-Paul Kneib] , [|Antione Labatie] , [|Craig Loomis] , [|Robert H. Lupton] , [|Elena Malanushenko] , [|Viktor Malanushenko] , [|Rachel Mandelbaum] , [|Marc Manera] , [|Claudia Maraston] , [|Cameron K. McBride] , [|Kushal T. Mehta] , [|Olga Mena] , [|Francesco Montesano] , [|Demetri Muna] , [|Robert C. Nichol] , [|Sebastian E. Nuza] , [|Matthew D. Olmstead] , [|Daniel Oravetz] , [|Nikhil Padmanabhan] , [|Nathalie Palanque-Delabrouille] , [|Kaike Pan] , [|John Parejko] , [|Isabelle Paris] , [|Will J. Percival] , [|Patrick Petitjean] , et al. (29 additional authors not shown)  Comments: 33 pages Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO)[57]  [|arXiv:1203.6565] [ [|pdf] , [|ps] , [|other] ]  The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: measuring structure growth using passive galaxies  [|Rita Tojeiro] , [|W. J. Percival] , [|J. Brinkmann] , [|J. R. Brownstein] , [|D. Eisenstein] , [|M. Manera] , [|C. Maraston] , [|C. K. McBride] , [|D. Duna] , [|B. Reid] , [|A. J. Ross] , [|N. P. Ross] , [|L. Samushia] , [|N. Padmanabhan] , [|D. P. Schneider] , [|R. Skibba] , [|A. G. Sanchez] , [|M. E. C. Swanson] , [|D. Thomas] , [|J. L. Tinker] , [|L. Verde] , [|D. A. Wake] , [|B. A. Weaver] , [|G. Zhao]   Comments: Submitted to MNRAS. 6 pages, 3 figures, 1 table. Comments welcome Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO) [|arXiv:1203.6499] [ [|pdf], [|other] ] The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: Analysis of potential systematics [|Ashley J. Ross], [|Will J. Percival] , [|Ariel G. Sanchez] , [|Lado Samushia] , [|Shirley Ho] , [|Eyal Kazin] , [|Marc Manera] , [|Beth Reid] , [|Martin White] , [|Rita Tojeiro] , [|Cameron K. McBride] , [|Xiaoying Xu] , [|David A. Wake] , [|Michael A. Strauss] , [|Francesco Montesano] , [|Molly E. C. Swanson] , [|Stephen Bailey] , [|Adam S. Bolton] , [|Antonio Montero Dorta] , [|Daniel J. Eisenstein] , [|Hong Guo] , [|Jean-Christophe Hamilton] , [|Robert C. Nichol] , [|Nikhil Padmanabhan] , [|Francisco Prada] , [|David J. Schlegel] , [|Mariana Vargas Magana] , [|Idit Zehavi] , [|Michael Blanton] , [|Dmitry Bizyaev] , [|Howard Brewington] , [|Antonio J. Cuesta] , [|Elena Malanushenko] , [|Viktor Malanushenko] , [|Daniel Oravetz] , [|John Parejko] , [|Kaike Pan] , [|Donald P. Schneider Alaina Shelden] , [|Audrey Simmons] , [|Stephanie Snedden] , [|Gong-bo Zhao]   Comments: 27 pages, 29 figures, see companion papers that share the "The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey:" title Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO) [|arXiv:1203.6488] [ [|pdf], [|ps] , [|other] ] Explosive Nucleosynthesis in Magnetohydrodynamical Jets from Collapsars II. Heavy-element nucleosynthesis of s, r, p-processes [|Masaomi Ono], [|Masa-aki Hashimoto] , [|Shin-ichiro Fujimoto] , [|Kei Kotake] , [|Shoichi Yamada]   Comments: 22 pages, 11 figures, 2 tables, submitted to Progress of Theoretical Physics Subjects: Solar and Stellar Astrophysics (astro-ph.SR) [|arXiv:1203.5832] [ [|pdf], [|ps] , [|other] ] The Los Alamos Supernova Light Curve Project  [|Lucille H. Frey] , [|Wesley Even] , [|Daniel J. Whalen] , [|Chris L. Fryer] , [|Aimee L. Hungerford] , [|Christopher J. Fontes] , [|James Colgan]   Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) ; Instrumentation and Methods for Astrophysics (astro-ph.IM)

[|arXiv:1203.5799] [ [|pdf], [|ps] , [|other] ] Progenitors of Recombining Supernova Remnants [|Takashi J. Moriya] Comments: 5 pages, 2 figures, accepted by The Astrophysical Journal Letters Subjects: High Energy Astrophysical Phenomena (astro-ph.HE)

=22-26 Mar 2012=

[|arXiv:1203.5315] [ [|pdf], [|ps] , [|other] ] Constraints on Type Ia Supernova Progenitor Companions from Early Ultraviolet Observations with Swift [|Peter J. Brown], [|Kyle S. Dawson] , [|David W. Harris] , [|Matthew Olmstead] , [|Peter Milne] , [|Peter W. A. Roming]   Comments: accepted version  Journal-ref: 2012, ApJ, 749, 18  Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO) [|arXiv:1203.5113] [ [|pdf], [|ps] , [|other] ] GRB 100718A, 110709A, 111117A and 120107A: Faint high-energy gamma-ray photon emission from $Fermi$/LAT observations and demographic implications  [|Weikang Zheng] , [|Carl W. Akerlof] , [|Shashi B. Pandey] , [|Timothy A. McKay] , [|Binbin Zhang] , [|Bing Zhang] , [|Takanori Sakamoto]   Comments: submitted to ApJ Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) [|arXiv:1203.4982] [ [|pdf], [|ps] , [|other] ] The remnant of Supernova 1987A resolved at 3 mm wavelength  [|Masha Lakicevic] (ESO, Keele University), [|Giovanna Zanardo] (ICRAR), [|Jacco Th. van Loon] (Keele University), [|Lister Staveley-Smith] (ICRAR, CAASTRO), [|Toby Potter] (ICRAR), [|C.-Y. Ng] (Department of Physics, McGill University, Montreal), [|B.M. Gaensler] (Sydney Institute for Astronomy (SIfA), CAASTRO)  Comments: Accepted for publication in Astronomy and Astrophysics Letters Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) [|arXiv:1203.4975] [ [|pdf], [|ps] , [|other] ] Zooming in on Supernova 1987A at sub-mm wavelengths  [|Masha Lakicevic] (ESO, Keele University), [|Jacco Th. van Loon] (Keele University), [|Thomas Stanke] (ESO), [|Carlos De Breuck] (ESO), [|Ferdinando Patat] (ESO)  Comments: Accepted for publication in Astronomy and Astrophysics Letters Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) ; Galaxy Astrophysics (astro-ph.GA)

[|arXiv:1203.4839] [ [|pdf], [|ps] , [|other] ] Constraining Type Ia supernova models: SN 2011fe as a test case [|F. K. Roepke], [|M. Kromer] , [|I. R. Seitenzahl] , [|R. Pakmor] , [|S. A. Sim] , [|S. Taubenberger] , [|F. Ciaraldi-Schoolmann] , [|W. Hillebrandt] , [|G. Aldering] , [|P. Antilogus] , [|C. Baltay] , [|S. Benitez-Herrera] , [|S. Bongard] , [|C. Buton] , [|A. Canto] , [|F. Cellier-Holzem] , [|M. Childress] , [|N. Chotard] , [|Y. Copin] , [|H. K. Fakhouri] , [|M. Fink] , [|D. Fouchez] , [|E. Gangler] , [|J. Guy] , [|S. Hachinger] , [|E. Y. Hsiao] , [|C. Juncheng] , [|M. Kerschhaggl] , [|M. Kowalski] , [|P. Nugent] , [|K. Paech] , [|R. Pain] , [|E. Pecontal] , [|R. Pereira] , [|S. Perlmutter] , [|D. Rabinowitz] , [|M. Rigault] , [|K. Runge] , [|C. Saunders] , [|G. Smadja] , [|N. Suzuki] , [|C. Tao] , [|R. C. Thomas] , [|A. Tilquin] , [|C. Wu]  Comments: Accepted for publication in The Astrophysical Journal Letters Subjects: Solar and Stellar Astrophysics (astro-ph.SR) [|arXiv:1203.4832] [ [|pdf], [|ps] , [|other] ] The Spectroscopic Diversity of Type Ia Supernovae  [|S. Blondin] , [|T. Matheson] , [|R. P. Kirshner] , [|K. S. Mandel] , [|P. Berlind] , [|M. Calkins] , [|P. Challis] , [|P. M. Garnavich] , [|S. W. Jha] , [|M. Modjaz] , [|A. G. Riess] , [|B. P. Schmidt]   Comments: 35 pages (emulateapj), 23 figures. Accepted for publication in AJ. Spectroscopic data available at [|this http URL]. New SNID template set available at [|this http URL] Subjects: Solar and Stellar Astrophysics (astro-ph.SR) ; Cosmology and Extragalactic Astrophysics (astro-ph.CO)

[|arXiv:1203.4815] [ [|pdf], [|ps] , [|other] ] Adiabatic Heating of Contracting Turbulent Fluids [|Brant Robertson] (University of Arizona), [|Peter Goldreich] (Caltech)  Comments: 5 pages, 2 figures. Accepted by the Astrophysical Journal Letters Subjects: Galaxy Astrophysics (astro-ph.GA)

= = =21 Mar 2012=

[|arXiv:1203.4265] [ [|pdf], [|ps] , [|other] ] Detailed optical and near-infrared polarimetry, spectroscopy and broadband photometry of the afterglow of GRB 091018: Polarisation evolution [|K. Wiersema], [|P. A. Curran] , [|T. Kruehler] , [|A. Melandri] , [|E. Rol] , [|R. L. C. Starling] , [|N. R. Tanvir] , [|A. J. van der Horst] , [|S. Covino] , [|J. P. U. Fynbo] , [|P. Goldoni] , [|J. Gorosabel] , [|J. Hjorth] , [|S. Klose] , [|C. G. Mundell] , [|P. T. O'Brien] , [|E. Palazzi] , [|R. A. M. J. Wijers] , [|V. D'Elia] , [|P. A. Evans], [|R. Filgas] , [|A. Gomboc] , [|J. Greiner] , [|C. Guidorzi] , [|L. Kaper] , [|S. Kobayashi] , [|C. Kouveliotou] , [|A. J. Levan] , [|A. Rossi] , [|A. Rowlinson] , [|I. A. Steele] , [|A. de Ugarte Postigo] , [|S. D. Vergani]   Comments: 20 pages, 14 figures, 3 tables. Accepted for publication in MNRAS. Some figures are reduced in quality to comply with arXiv size requirements Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO) ; High Energy Astrophysical Phenomena (astro-ph.HE) [|arXiv:1203.4251] [ [|pdf], [|other] ] Star formation in metal-poor gas clouds [|Simon C. O. Glover], [|Paul C. Clark]  Comments: 11 pages, 5 figures. Submitted to MNRAS Subjects: Galaxy Astrophysics (astro-ph.GA) = = =20 Mar 2012= = =  [|arXiv:1203.4013] [ [|pdf], [|ps] , [|other] ] BVRI Photometry of SN 2011fe in M101 [|Michael W. Richmond], [|Horace A. Smith]   Comments: submitted to the Journal of the American Association of Variable Star Observers  Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO) [|arXiv:1203.3802] [ [|pdf], [|ps] , [|other] ] The interaction between feedback from active galactic nuclei and supernovae  [|C. M. Booth] (1,2), [|Joop Schaye] (2) ((1) Chicago, (2) Leiden)  Comments: MNRAS letters submitted. 5 pages, 2 figures. Comments welcome Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO) ; Galaxy Astrophysics (astro-ph.GA) = = =16-19 Mar 2012=

[|arXiv:1203.3748] [ [|pdf], [|other] ] Turbulence and magnetic field amplification from spiral SASI modes in core-collapse supernovae [|E. Endeve], [|C. Y. Cardall], [|R. D. Budiardja] , [|A. Mezzacappa] , [|J. M. Blondin]   Comments: Submitted to the proceedings of the International Conference Turbulent Mixing and Beyond, held 21 - 28 August, 2011 at the Abdus Salam International Centre for Theoretical Physics, Trieste, Italy  Subjects: Solar and Stellar Astrophysics (astro-ph.SR) ; High Energy Astrophysical Phenomena (astro-ph.HE) [|arXiv:1203.3677] [ [|pdf], [|ps] , [|other] ] Interstellar polarization and grain alignment: the role of iron and silicon [|N. V. Voshchinnikov], [|Th. Henning] , [|M. S. Prokopjeva] , [|H. K. Das]   Comments: Accepted for publication in Astronomy and Astrophysics Subjects: Galaxy Astrophysics (astro-ph.GA) [|arXiv:1203.3385] [ [|pdf], [|other] ] Turbulent magnetic field amplification from spiral SASI modes in core-collapse supernovae  [|E Endeve] , [|C Y Cardall] , [|R D Budiardja] , [|A Mezzacappa]   Comments: 15 pages, 7 figures, To appear in the Journal of Physics: Conference Series. Proceedings of the IUPAP Conference on Computational Physics (CCP2011) Subjects: Solar and Stellar Astrophysics (astro-ph.SR) [|arXiv:1203.3213] [ [|pdf], [|other] ] From cosmic deceleration to acceleration: new constraints from SN Ia and BAO/CMB  [|R. Giostri] , [|M.Vargas dos Santos] , [|I. Waga] , [|R. R. R. Reis] , [|M. O. Calvão] , [|B. L. Lago]   Comments: 25 pages, 9 figures. Accepted for publication in JCAP Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO) =15 Mar 2012=

[|arXiv:1203.2918] [ [|pdf], [|ps] , [|other] ] Wind-accretion disks in wide binaries, second generation protoplanetary disks and accretion onto white dwarfs [|Hagai B. Perets], [|Scott J. Kenyon]   Comments: Comments are welcome  Subjects: Solar and Stellar Astrophysics (astro-ph.SR) ; Earth and Planetary Astrophysics (astro-ph.EP) = = [|arXiv:1203.2916] [ [|pdf], [|ps] , [|other] ] Linking Type Ia Supernova Progenitors and their Resulting Explosions [|Ryan J. Foley], [|Joshua D. Simon] , [|Christopher R. Burns] , [|Avishay Gal-Yam] , [|Mario Hamuy] , [|Robert P. Kirshner] , [|Nidia I. Morrell] , [|Mark M. Phillips] , [|Gregory A. Shields] , [|Assaf Sternberg]   Comments: 9 pages, 3 figures, submitted to ApJ, comments welcome  Subjects: Solar and Stellar Astrophysics (astro-ph.SR) ; Cosmology and Extragalactic Astrophysics (astro-ph.CO) =14 Mar 2012=

[|arXiv:1203.2914] [ [|pdf], [|other] ] The triple evolution dynamical instability: Stellar collisions in the field and the formation of exotic binaries [|Hagai B. Perets], [|Kaitlin M. Kratter]   Comments: Comments are welcome  Subjects: Solar and Stellar Astrophysics (astro-ph.SR) ; High Energy Astrophysical Phenomena (astro-ph.HE) [|arXiv:1203.2726] [ [|pdf], [|ps] , [|other] ] Transient outburst events from tidally disrupted asteroids near white dwarfs [|Ealeal Bear], [|Noam Soker]   Comments: Submitted Subjects: Solar and Stellar Astrophysics (astro-ph.SR) =13 Mar 2012= = =  [|arXiv:1203.2532] [ [|pdf], [|ps] , [|other] ] H.E.S.S. deeper observations on SNR RX J0852.0-4622 [|Manuel Paz Arribas], [|Ullrich Schwanke], [|Iurii Sushch] , [|Nukri Komin] , [|Fabio Acero] , [|Stefan Ohm] , for the [|H.E.S.S. Collaboration]  Journal-ref: Proceedings of the 32nd ICRC, vol. 7, p. 140-143, 2011  Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) ; Galaxy Astrophysics (astro-ph.GA) [|arXiv:1203.2517] [[|pdf], [|ps], [|other]] The araucaria project. An accurate distance to the late-type double-lined eclipsing binary ogle smc113.3 4007 in the small magellanic cloud [|Dariusz Graczyk], [|Grzegorz Pietrzynski] , [|Ian B. Thompson] , [|Wolfgang Gieren] , [|Bogumil Pilecki] , [|Andrzej Udalski] , [|Igor Soszynski] , [|Zbigniew Kolaczkowski] , [|Rolf-Peter Kudritzki] , [|Fabio Bresolin] , [|Piotr Konorski] , [|Ronald Mennickent] , [|Dante Minniti] , [|Jesper Storm] , [|Nicolas Nardetto] , [|Paulina Karczmarek]   Comments: accepted in ApJ Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO) ; Solar and Stellar Astrophysics (astro-ph.SR) =7 - 12 Mar 2012=

[|arXiv:1203.2065] [ [|pdf], [|other] ] Thermonuclear burst oscillations [|Anna L. Watts] (University of Amsterdam)  Comments: Preprint of article submitted to Annual Reviews of Astronomy and Astrophysics (2012). 35 pages Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) [|arXiv:1203.2014] [ [|pdf], [|ps] , [|other] ] The Stellar parametrization using Artificial Neural Network [|Sunetra Giridhar] (1), [|Aruna Goswami] (1), [|Andrea Kunder] (2), [|S. Muneer] (3), [|G. Selva Kumar] (4) ((1) Indian Institute of Astrophysics, Bangalore, India, (2) Cerro Tololo Inter-American Observatory, NOAO, Chile, (3) CREST Campus, Indian Institute of Astrophysics, India, (4) Vainu Bappu Observatory, Kavalur, India.)  Comments: 6 pages, 2 figures, To appear in Astronomical Society of India Conference Series (ASICS). eds. P. Prugniel and H.P Singh Subjects: Solar and Stellar Astrophysics (astro-ph.SR) [|arXiv:1203.1933] [ [|pdf], [|ps] , [|other] ] A spectroscopically normal type Ic supernova from a very massive progenitor  [|Stefano Valenti] (1), [|Stefan Taubenberger] , [|Andrea Pastorello] , [|Levon Aramyan] , [|Maria Teresa Botticella] , [|Morgan Fraser] , [|Stefano Benetti] , [|Stephen J. Smartt] , [|Enrico Cappellaro] , [|Nancy Elias-Rosa] , [|Mattias Ergon] , [|Lindsay Magill] , [|Eugene Magnier] , [|Rubina Kotak] , [|Paul A. Price] , [|Jesper Sollerman] , [|Lina Tomasella] , [|Massimo Turatto] , [|Darryl Edmund Wright. -] (1) [|INAF-Osservatorio Astronomico di Padova]   Comments: 3 Figures - 2 Tables - Accepted for publication in ApJL Subjects: Solar and Stellar Astrophysics (astro-ph.SR) ; Cosmology and Extragalactic Astrophysics (astro-ph.CO) [|arXiv:1203.1932] [ [|pdf], [|ps] , [|other] ] Impact of type ia supernova ejecta on binary companions in the single-degenerate scenario [|Kuo-Chuan Pan] , [|Paul Ricker] , [|Ronald Taam]   Comments: 49 pages, 24 figures, submitted to ApJ Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) [|arXiv:1203.1926] [ [|pdf], [|ps] , [|other] ] The Arduous Journey to Black-Hole Formation in Potential Gamma-Ray Burst Progenitors  [|Luc Dessart] , [|Evan O'Connor] , [|Christian D. Ott]   Comments: 10 emulateapj pages, 3 figures, 1 table. Submitted to the Astrophysical Journal Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) [|arXiv:1203.1577] [ [|pdf], [|ps] , [|other] ] The long and the short of the high energy emission in GRB090926A: an external shock  [|J. R. Sacahui] , [|N. Fraija] , [|M. M. González] , [|W. H. Lee]   Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) [|arXiv:1203.1523] [ [|pdf], [|ps] , [|other] ] 3D Simulations of Magnetic Massive Star Winds [|Asif ud-Doula]  Comments: 5 pages, Conference Proceedings from Four Decades of Research on Massive Stars: A Scientific Meeting in Honour of Anthony F. J. Moffat Subjects: Solar and Stellar Astrophysics (astro-ph.SR) [|arXiv:1203.1490] [ [|pdf], [|ps] , [|other] ] Accreting magnetars: a new type of high-mass X-ray binaries? [|P. Reig] (FORTH), [|J. M. Torrejón] (U. Alicante), [|P. Blay] (U. Valencia) Comments: submitted to MNRAS on 15 December 2011 Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) [|arXiv:1203.1451] [ [|pdf], [|ps] , [|other] ] Dip after Precursor of Super-Luminous Supernovae: An Evidence of Shock Breakout in Dense Circumstellar Medium [|Takashi J. Moriya], [|Keiichi Maeda]   Comments: 4 pages, 1 figure, submitted to The Astrophysical Journal Letters Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) ; Solar and Stellar Astrophysics (astro-ph.SR) =6 Mar 2012:=

[|arXiv:1203.0591] [ [|pdf] ] LSST is Not "Big Data" [|David Schlegel]   Comments: Letter submitted to the NSF Astronomy Portfolio Review  Subjects: Instrumentation and Methods for Astrophysics (astro-ph.IM) =1-5 Mar 2012:= = =  [|arXiv:1203.0296] [ [|pdf], [|ps] , [|other] ] The survival of nuclei in jets associated with core-collapse supernovae [|Shunsaku Horiuchi], [|Kohta Murase] , [|Kunihito Ioka] , [|Peter Meszaros]   Comments: 15 pages, 7 figures, submitted to Astrophysical Journal  Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) ; Solar and Stellar Astrophysics (astro-ph.SR) [|arXiv:1203.0006] [ [|pdf], [|ps] , [|other] ] Late-Time Optical Emission From Core-Collapse Supernovae [|D. Milisavljevic], [|R. Fesen] , [|R. Chevalier] , [|R. Kirshner] , [|P. Challis] , [|M. Turatto]   Comments: 16 pages, 16 figures, accepted for publication in the Astrophysical Journal Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) =Feb 2012:=

[|arXiv:1202.6171] [ [|pdf], [|ps] , [|other] ] Evolution of the Symbiotic Nova PU Vul -- Outbursting White Dwarf, Nebulae, and Pulsating Red Giant Companion [|Mariko Kato] (Keio Univ), [|Joanna Mikolajewska] , (N.Copernicus Astronomical Center), [|Izumi Hachisu] (Univ. of Tokyo)  Comments: 16 pages including 8 figs, to appear in ApJ Subjects: Solar and Stellar Astrophysics (astro-ph.SR) [|arXiv:1202.5823] [ [|pdf], [|ps] , [|other] ] Spitzer Imaging and Spectral Mapping of the Oxygen-Rich Supernova Remnant G292.0+1.8  [|Parviz Ghavamian] , [|Knox S. Long] , [|William P. Blair] , [|Sangwook Park] , [|Robert Fesen] , [|Bryan M. Gaensler] , [|John P. Hughes] , [|Jeonghee Rho] , [|P. Frank Winkler]   Comments: 16 pages, 1 table, 7 figures, accepted for publication in ApJ Subjects: Galaxy Astrophysics (astro-ph.GA) [|arXiv:1202.5472] [ [|pdf], [|ps] , [|other] ] The Merger Rate of Binary White Dwarfs in the Galactic Disk [|Carles Badenes], [|Dan Maoz]   Comments: 5 pages, 3 figures, 1 table, ApJL, accepted (modified abstract, this version should match the published one) Subjects: Solar and Stellar Astrophysics (astro-ph.SR) [|arXiv:1202.3610] [ [|pdf], [|ps] , [|other] ] Detectability of High-Redshift Superluminous Supernovae with Upcoming Optical and Near-Infrared Surveys [|Masaomi Tanaka] , [|Takashi J. Moriya] , [|Naoki Yoshida] , [|Ken'ichi Nomoto]   Comments: Accepted for publication in MNRAS, 11 pages Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO) [|arXiv:1202.3593] [ [|pdf], [|ps] , [|other] ] Role of ejecta clumping and back-reaction of accelerated cosmic rays in the evolution of Type Ia supernova remnants [|S. Orlando] , [|F. Bocchino] , [|M. Miceli] , [|O. Petruk] , [|M.L. Pumo]   Comments: 12 pages, 11 Figures; accepted for publication on ApJ. Version with full resolution images can be found at [|this http URL] Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) [|arXiv:1202.3437] [ [|pdf], [|ps] , [|other] ] Optical to X-rays supernovae light curves following shock breakout through a thick wind [|Gilad Svirski] , [|Ehud Nakar] , [|Re'em Sari]   Comments: 9 pages, 4 figures Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) [|arXiv:1202.3403] [ [|pdf], [|ps] , [|other] ] Dynamics of secular evolution [|James Binney] (Oxford University)  Comments: 43 pages. Lectures given at the XXIII Canary islands winter school of astrophysics, November 2011 To appear in "Secular Evolution of Galaxies" ed. J. Falcon-Barroso &amp; J.H. Knapen Subjects: Galaxy Astrophysics (astro-ph.GA) [|arXiv:1202.3156] [ [|pdf], [|ps] , [|other] ] Interstellar Sodium and Calcium Absorption toward SN 2011dh in M51 [|Adam M. Ritchey] , [|George Wallerstein]   Comments: 6 pages, 3 figures, emulateapj style, accepted for publication in ApJ Letters Journal-ref: Astrophys. J., 748:L11 (5pp), 2012 Subjects: Galaxy Astrophysics (astro-ph.GA) ; Cosmology and Extragalactic Astrophysics (astro-ph.CO) [|arXiv:1202.3140] [ [|pdf], [|ps] , [|other] ] The Low-Velocity, Rapidly Fading Type Ia Supernova 2002es [|Mohan Ganeshalingam] , [|Weidong Li] , [|Alexei V. Filippenko] , [|Jeffrey M. Silverman] , [|Ryan Chornock] , [|Ryan J. Foley] , [|Thomas Matheson] , [|Robert P. Kirshner] , [|Peter Milne] , [|Mike Calkins] , [|Ken J. Shen]   Comments: 19 pages, 15 figures, Submitted to ApJ Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO) [|arXiv:1202.3125] [ [|pdf], [|ps] , [|other] ] X-Ray Observations of the Supernova Remnant W28 with Suzaku --- I. Spectral Study of the Recombining Plasma [|Makoto Sawada] , [|Katsuji Koyama]   Comments: Accepted for publication in PASJ; Vol.64 No. 4 (8 pages, 5 figures) Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) [|arXiv:1202.3075] [ [|pdf], [|ps] , [|other] ] Thirty years of SN 1980K: Evidence for light echoes [|Ben E. K. Sugerman] , [|Jennifer E. Andrews] , [|Michael J. Barlow] , [|Geoffrey C. Clayton] , [|Barbara Ercolano] , [|Parviz Ghavamian] , [|Robert C. Kennicutt Jr.] , [|Oliver Krause] , [|Margaret Meixner] , [|Masaaki Otsuka]   Comments: Accepted 2/14/12 to be published in ApJ. 15 pages, 10 figures Subjects: Solar and Stellar Astrophysics (astro-ph.SR) [|arXiv:1202.2738] [ [|pdf], [|ps] , [|other] ] Discovery & Depth [|S. R. Kulkarni] Comments: An earlier version of this position paper was submitted to the Portfolio Review (sans section 8) Subjects: Instrumentation and Methods for Astrophysics (astro-ph.IM) ; Cosmology and Extragalactic Astrophysics (astro-ph.CO) [|arXiv:1202.2713] [ [|pdf], [|ps] , [|other] ] [FeII] as a tracer of Supernova Rate in Near-by Starburst Galaxies  [|M. J. F. Rosenberg] , [|P. P. van der Werf] , [|F. P. Israel]   Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO) [|arXiv:1202.2487] [ [|pdf], [|ps] , [|other] ] Fully General Relativistic Simulations of Core-Collapse Supernovae with An Approximate Neutrino Transport [|Takami Kuroda] , [|Kei Kotake] , [|Tomoya Takiwaki]   Comments: 47pages, 20 figures, submitted to ApJ Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) ; General Relativity and Quantum Cosmology (gr-qc) [|arXiv:12022381] [ [|pdf], [|other] ] Cosmic Explosions (Optical Transients) [|S. R. Kulkarni] Comments: Extended review of a talk given at IAU Symposium 285(Oxford 2011) Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) ; Cosmology and Extragalactic Astrophysics (astro-ph.CO) [|arXiv:1202.2130] [ [|pdf], [|other] ] Berkeley Supernova Ia Program III: Spectra Near Maximum Brightness Improve the Accuracy of Derived Distances to Type Ia Supernovae [|Jeffrey M. Silverman], [|Mohan Ganeshalingam] , [|Weidong Li] , [|Alexei V. Filippenko]   Comments: 30 pages, 31 figures, 1 table, submitted to MNRAS Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO)

[|arXiv:1202.2129] [ [|pdf], [|other] ] Berkeley Supernova Ia Program II: Initial Analysis of Spectra Obtained Near Maximum Brightness [|Jeffrey M. Silverman] , [|Jason J. Kong] , [|Alexei V. Filippenko]   Comments: Measured values of the spectral features (i.e., Appendix B) will be publicly available when the paper is accepted Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO) [|arXiv:1202.2128] [ [|pdf], [|other] ] Berkeley Supernova Ia Program I: Observations, Data Reduction, and Spectroscopic Sample of 582 Low-Redshift Type Ia Supernovae [|Jeffrey M. Silverman] , [|Ryan J. Foley] , [|Alexei V. Filippenko] , [|Mohan Ganeshalingam] , [|Aaron J. Barth] , [|Ryan Chornock] , [|Christopher V. Griffith] , [|Jason J. Kong] , [|Nicholas Lee] , [|Douglas C. Leonard] , [|Thomas Matheson] , [|Emily G. Miller] , [|Thea N. Steele] , [|Brian J. Barris] , [|Joshua S. Bloom] , [|Bethany E. Cobb] , [|Alison L. Coil] , [|Louis-Benoit Desroches] , [|Elinor L. Gates] , [|Luis C. Ho] , [|Saurabh W. Jha] , [|Michael T. Kandrashoff] , [|Weidong Li] , [|Kaisey S. Mandel] , [|Maryam Modjaz] , [|Matthew R. Moore] , [|Robin E. Mostardi] , [|Marina S. Papenkova] , [|Sung Park] , [|Daniel A. Perley] , [|Dovi Poznanski] , [|Cassie A. Reuter] , [|James Scala] , [|Franklin J. D. Serduke] , [|Joseph C. Shields] , [|Brandon J. Swift] , [|John L. Tonry] , [|Schuyler D. Van Dyk] , [|Xiaofeng Wang] , [|Diane S. Wong]   Comments: 50 pages, 34 figures, 11 tables, submitted to MNRAS. Spectra will be released in January 2013. The SN Database homepage ( [|this http URL] ) contains the full tables, plots of all spectra, and our new SNID templates Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO) [|arXiv:1202.1772] [ [|pdf], [|other] ] SNR 0453-68.5: An Asymmetric Remnant and its Plerion in the Large Magellanic Cloud [|Randall L. McEntaffer] , [|Thomas Brantseg] , [|Morgan Presley]   Comments: Resubmitted to ApJ Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) [|arXiv:1202.1594] [ [|pdf], [|ps] , [|other] ] Suzaku View of the Supernova Remnant RCW 86: X-Ray Studies of Newly-Discovered Fe-Rich Ejecta [|Hiroya Yamaguchi] , [|Katsuji Koyama] , [|Hiroyuki Uchida]   Comments: Published by PASJ Journal-ref: 2011PASJ...63S.837Y Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) [|arXiv:1202.1588] [ [|pdf], [|ps] , [|other] ] Elemental Abundances in the Possible Type Ia Supernova Remnant G344.7-0.1 [|Hiroya Yamaguchi] , [|Masaomi Tanaka] , [|Keiichi Maeda] , [|Patrick O. Slane] , [|Adam Foster] , [|Randall K. Smith] , [|Satoru Katsuda] , [|Rie Yoshii]   Comments: ApJ in press Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) [|arXiv:1202.1434] [ [|pdf], [|ps] , [|other] ] A deep search for the host galaxies of GRBs with no detected optical afterglow [|A. Rossi], [|S. Klose] , [|P. Ferrero] , [|J. Greiner] , [|L. A. Arnold] , [|E. Gonsalves] , [|D. H. Hartmann] , [|A. C. Updike] , [|D. A. Kann] , [|T. Krühler] , [|E. Palazzi] , [|S. Savaglio] , [|S. Schulze] , [|P. M. J. Afonso] , [|L. Amati] , [|A. J. Castro-Tirado] , [|C. Clemens] , [|R. Filgas] , [|J. Gorosabe] , [|L. K. Hunt] , [|A. Küpcü Yoldas] , [|N. Masetti] , [|M. Nardini] , [|A. Nicuesa Guelbenzu] , [|F. Olivares E.] , [|E. Pian] , [|A. Rau] , [|P. Schady] , [|S. Schmidl] , [|A. Yoldas] , [|A. de Ugarte Postigo] Comments: 29 pages, 17 figures, submitted to A&amp;A Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO) ; High Energy Astrophysical Phenomena (astro-ph.HE) [|arXiv:1202.1396] [ [|pdf], [|ps] , [|other] ] Supernovae and Gaia [|Giuseppe Altavilla], [|Maria Teresa Botticella] , [|Enrico Cappellaro] , [|Massimo Turatto]   Comments: 17 pages, 5 figures. Accepted for publication in Astrophysics &amp; Space Science (a special issue fully dedicated to the proceedings of the conference: "The Fundamental Cosmic Distance Scale: State of the Art and the Gaia Perspective", May 3-6, 2011, Naples, Italy) Subjects: Solar and Stellar Astrophysics (astro-ph.SR) [|arXiv:1202.0815] [ [|pdf], [|ps] , [|other] ] A New Multi-Dimensional General Relativistic Neutrino Hydrodynamics Code for Core-Collapse Supernovae II. Relativistic Explosion Models of Core-Collapse Supernovae [|B. Mueller], [|H.-Th. Janka] , [|A. Marek]   Comments: 23 pages, 19 figures; submitted to ApJ Subjects: Solar and Stellar Astrophysics (astro-ph.SR) [|arXiv:1202.0756] [[|pdf], [|other] ] Quantitative Photospheric Spectral Analysis of the Type IIP Supernova 2007od  [|C. Inserra], [|E. Baron] , [|M. Turatto]   Comments: Accepted on MNRAS, 8 pages, 7 figures, 1 table Subjects: Solar and Stellar Astrophysics (astro-ph.SR) ; Cosmology and Extragalactic Astrophysics (astro-ph.CO) [|arXiv:1202.0741] [ [|pdf], [|ps] , [|other] ] Inverse Compton X-ray Emission from Supernovae with Compact Progenitors: Application to SN2011fe [|R. Margutti] , [|A.M. Soderberg] , [|L. Chomiuk] , [|R. Chevalier] , [|K. Hurley] , [|D. Milisavljevic] , [|R.J. Foley] , [|J.P. Hughes] , [|P. Slane] , [|C. Fransson] , [|M. Moe] , [|S. Barthelmy] , [|W. Boynton] , [|M. Briggs] , [|V. Connaughton] , [|E. Costa] , [|J. Cummings] , [|E. Del Monte] , [|H. Enos] , [|C. Fellows] , [|M. Feroci] , [|Y. Fukazawa] , [|N. Gehrels] , [|J. Goldsten] , [|D. Golovin] , [|Y. Hanabata] , [|K. Harshman] , [|H. Krimm] , [|M. L. Litvak] , [|K. Makishima] , [|M. Marisaldi] , [|I. G. Mitrofanov] , [|T. Murakami] , [|M. Ohno] , [|D. M. Palmer] , [|A. B. Sanin] , [|R. Starr] , [|D. Svinkin]   Comments: Submitted to ApJ Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) [|arXiv:1202.0659] [ [|pdf], [|other] ] The bright Type IIP SN 2009bw, showing signs of interaction  [|C. Inserra] , [|M. Turatto] , [|A. Pastorello] , [|M.L. Pumo] , [|E. Baron] , [|S. Benetti] , [|E. Cappellaro] , [|S.Taubenberger] , [|F. Bufano] , [|N. Elias-Rosa] , [|L. Zampieri] , [|A. Harutyunyan] , [|A. S. Moskvitin] , [|M. Nissinen] , [|V. Stanishev] , [|D. Y. Tsvetkov] , [|V.P. Hentunen] , [|V.N. Komarova] , [|N.N. Pavlyuk] , [|V.V. Sokolov] , [|T.N. Sokolova]   Comments: Accepted for publication in MNRAS, 19 pages, 13 figures, 9 tables Subjects: Solar and Stellar Astrophysics (astro-ph.SR) ; Cosmology and Extragalactic Astrophysics (astro-ph.CO) [|arXiv:1202.0461] [ [|pdf], [|ps] , [|other] ] Double degenerate mergers as progenitors of high-field magnetic white dwarfs [|E. García--Berro] , [|P. Lorén--Aguilar] , [|G. Aznar--Siguán] , [|S. Torres] , [|J. Camacho] , [|L. G. Althaus] , [|A. H. Córsico] , [|B. Külebi] , [|J. Isern]   Comments: 6 pages, 2 figures, accepted for publication in ApJ Letters Subjects: Solar and Stellar Astrophysics (astro-ph.SR) [|arXiv:1202.0281] [ [|pdf], [|ps] , [|other] ] Unmasking the Supernova Impostors [|C. S. Kochanek] (1 and 2), [|D. M. Szczygiel] (1 and 2), [|K. Z. Stanek] (1 and 2) ((1) Department of Astronomy, The Ohio State University (2) Center for Cosmology and AstroParticle Physics, The Ohio State University)  Comments: 72 pages, 28 figures, submitted to ApJ Subjects: Solar and Stellar Astrophysics (astro-ph.SR) [|arXiv:1202.0279] [ [|pdf], [|ps] , [|other] ] Dust to Dust: 3 years in the Evolution of the Unusual SN 2008S  [|D. M. Szczygiel] , [|J. L. Prieto], [|C. S. Kochanek] , [|K. Z. Stanek] , [|T. A. Thompson] , [|J. F. Beacom] , [|P. M. Garnavich] , [|C. E. Woodward]   Comments: 6 pages, 4 figures, 1 table, submitted to ApJ; This paper has substantial text overlap with [|arXiv:1007.0011] , but is significantly revised and updated with new data and results Subjects: Solar and Stellar Astrophysics (astro-ph.SR) [|arXiv:1202.0278] [ [|pdf], [|ps] , [|other] ] Dust Attenuation and H-alpha Star Formation Rates of z~0.5 Galaxies  [|Chun Ly] (1,7), [|Matthew A. Malkan] (2), [|Nobunari Kashikawa] (3,4), [|Kazuaki Ota] (5), [|Kazuhiro Shimasaku] (3), [|Masanori Iye] (3), [|Thayne Currie] (6) ((1) STScI, (2) UCLA, (3) U. Tokyo, (4) NAOJ, (5) Kyoto U., (6) NASA-Goddard, (7) Giacconi Fellow)  Comments: Accepted for publication in The Astrophysical Journal Letters. Six pages, five figures (in color), emulateapj format Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO) [|arXiv:1202.0181] [ [|pdf], [|ps] , [|other] ] Estimations of the Distances of Stellar Collapses in the Galaxy by Analyzing the Energy Spectrum of Neutrino Bursts  [|Ernesto Kemp] , [|Bruno Miguez] , [|Walter Fulgione]   Comments: Proceedings of the Second International Symposium on Strong Electromagnetic Fields and Neutron Stars (SMFNS 2011) Instituto de Cibern\'etica, Matem\'atica y F\'isica (ICIMAF) Sociedad Cubana de F\'isica (SCF) Varadero, Cuba, 5-7 May 2011 Journal-ref: IJMPE, Volume No.20, Issue No. supp02 (2011) pg. 57-60 Subjects: Instrumentation and Methods for Astrophysics (astro-ph.IM) ; High Energy Astrophysical Phenomena (astro-ph.HE); High Energy Physics - Experiment (hep-ex) [|arXiv:1202.0003] [ [|pdf], [|ps] , [|other] ] The Relation Between Ejecta Velocity, Intrinsic Color, and Host-Galaxy Mass for High-Redshift Type Ia Supernovae [|Ryan J. Foley] Comments: 13 pages, 11 figures, accepted by ApJ Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO) =25-31 Ene 2012:=

[|arXiv:1201.5726] [ [|pdf], [|ps] , [|other] ] A Feasibility Study for the Detection of Supernova Explosions with an Undersea Neutrino Telescope [|A. Leisos], [|A.G. Tsirigotis] , [|S.E. Tzamarias] , [|on behalf of the KM3NeT consortium]   Comments: 11 pages, 3 figures, to be published in Nucl. Inst. and Meth. A Subjects: Instrumentation and Methods for Astrophysics (astro-ph.IM) ; High Energy Astrophysical Phenomena (astro-ph.HE) [|arXiv:1201.5581] [ [|pdf], [|ps] , [|other] ] X-Rays from Supernova Shocks in Dense Mass Loss [|Roger A. Chevalier], [|Christopher M. Irwin]   Comments: 11 pages, 1 figure, ApJL, submitted Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) [|arXiv:1201.5398] [ [|pdf], [|ps] , [|other] ] Radioactively-Powered Rising Lightcurves of Type Ia Supernovae  [|Anthony L. Piro] (Caltech)  Comments: 7 pages, 4 figures, submitted for publication in The Astrophysical Journal Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) ; Solar and Stellar Astrophysics (astro-ph.SR)

[|arXiv:1201.5393] [ [|pdf], [|ps] , [|other] ] SN 2006oz: rise of a super-luminous supernova observed by the SDSS-II SN Survey [|G. Leloudas] , [|E. Chatzopoulos] , [|B. Dilday] , [|J. Gorosabel] , [|J. Vinko] , [|A. Gallazzi] , [|J. C. Wheeler] , [|B. Bassett] , [|J. Fischer] , [|J. A. Frieman] , [|J. P. U. Fynbo] , [|A. Goobar] , [|M. Jelinek] , [|D. Malesani] , [|R. C. Nichol] , [|J. Nordin] , [|L. Ostman] , [|M. Sako] , [|D. P. Schneider] , [|M. Smith] , [|J. Sollerman] , [|M. D. Stritzinger] , [|C. C. Thoene] , [|A. de Ugarte Postigo]   Comments: Re-submitted to A&amp;A after taking into account the comments from the referee. The abstract has been modified to fit the arXiv space requirements. 11 pages, 8 figures, 3 tables Subjects: Solar and Stellar Astrophysics (astro-ph.SR) [|arXiv:1201.5123] [ [|pdf], [|ps] , [|other] ] Normal Type Ia supernovae from violent mergers of white dwarf binaries  [|R. Pakmor] , [|M. Kromer] , [|S. Taubenberger] , [|S. A. Sim] , [|F. K. Roepke] , [|W. Hillebrandt]   Comments: 6 pages, 4 figures, accepted for publication in ApJL Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) [|arXiv:1201.5056] [ [|pdf], [|ps] , [|other] ] An X-Ray Study of Supernova Remnant N49 and Soft Gamma-Ray Repeater 0526-66 in the Large Magellanic Cloud  [|Sangwook Park] (UT Arlington), [|John P. Hughes] (Rutgers), [|Patrick O. Slane] (Harvard-Smithsonian CfA), [|David N. Burrows] (Penn State), [|Jae-Joon Lee] (KASI), [|Koji Mori] (Miyazaki)  Comments: Accepted by ApJ, 27 pages in total (aastex preprint format) including 5 figures (4 in color) and 5 tables Subjects: High Energy Astrophysical Phenomena (astro-ph.HE)

= = =18-24 Ene 2012:=

[|arXiv:1201.4851] [ [|pdf], [|ps] , [|other] ] An adaptive-binning method for generating constant-uncertainty/constant-significance light curves with Fermi-LAT data [|B. Lott], [|L. Escande] , [|S. Larsson] , [|J. Ballet]   Comments: 17 pages, 13 figures, 5 tables. Submitted to A&amp;A Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) [|arXiv:1201.4561] [ [|pdf], [|ps] , [|other] ] Do novae have optically thick winds during outburst with large deviations from spherical symmetry? [|Michael Friedjung] Comments: 1 table, Astronomy &amp; Astrophysics accepted for publication Subjects: Solar and Stellar Astrophysics (astro-ph.SR) [|arXiv:1201.4401] [ [|pdf], [|ps] , [|other] ] What makes a galaxy radio-loud? [|R. A. Ortega-Minakata], [|J. P. Torres-Papaqui] , [|H. Andernach] , [|R. Coziol] , [|J. M. Islas-Islas] , [|I. Plauchu-Frayn] , [|D. M. Neri-Larios] , [|M. del C. Rojas-Granados]  Comments: 3 pages, 3 figures; to appear in Proceedings of IAU Symposium No. 284, The Spectral Energy Distribution of Galaxies (SED2011), Preston, UK, 5-9 sep. 2011 Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO) [|arXiv:1201.3989] [ [|pdf], [|other] ] The Hubble Space Telescope Cluster Supernova Survey: III. Correlated Properties of Type Ia Supernovae and Their Hosts at 0.9 < z < 1.46 [|J. Meyers], [|G. Aldering] , [|K. Barbary] , [|L. F. Barrientos] , [|M. Brodwin] , [|K. S. Dawson] , [|S. Deustua] , [|M. Doi] , [|P. Eisenhardt] , [|L. Faccioli] , [|H. K. Fakhouri] , [|A. S. Fruchter] , [|D. G. Gilbank] , [|M. D. Gladders] , [|G. Goldhaber] , [|A. H. Gonzalez] , [|T. Hattori] , [|E. Hsiao] , [|Y. Ihara] , [|N. Kashikawa] , [|B. Koester] , [|K. Konishi] , [|C. Lidman] , [|L. Lubin] , [|T. Morokuma] , [|T. Oda] , [|S. Perlmutter] , [|M. Postman] , [|P. Ripoche] , [|P. Rosati] , [|D. Rubin] , [|E. Rykoff] , [|A. Spadafora] , [|S. A. Stanford] , [|N. Suzuki] , [|N. Takanashi] , [|K. Tokita] , [|N. Yasuda] , for the [|Supernova Cosmology Project]   Comments: 37 pages, 15 figures Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO) [|arXiv:1201.3912] [ [|pdf], [|ps] , [|other]] Top-heavy IMFs in ultra compact dwarf galaxies? [|Jörg Dabringhausen], [|Pavel Kroupa]  Comments: Proceedings to the conference "UP: Have Observations Revealed a Variable Upper End of the Initial Mass Funktion?" that was held in Sedona, Arizona, in 2010. The subject of this article is discussed in greater detail in our recent paper "Low-mass X-ray binaries indicate a top-heavy IMF in ultra compact dwarf galaxies", [|arXiv:1110.2779] Journal-ref: Astronomical Society of the Pacific Conference Series 440 (2011) 261-268 Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO) [|arXiv:1201.3912] [ [|pdf], [|ps] , [|other]] [|arXiv:1201.3822] [ [|pdf] ] Observational Constraints on the Degenerate Mass-Radius Relation  [|J. B. Holberg], [|T. D. Oswalt] , [|M. A. Barstow]   Comments: 32 pages, 2 figures Subjects: Solar and Stellar Astrophysics (astro-ph.SR) [|arXiv:1201.3810] [ [|pdf], [|ps] , [|other] ] "Dark energy" in the Local Void [|M. Villata]  Comments: 6 pages, accepted as a Letter to the Editor by Astrophysics and Space Science Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO) ; General Relativity and Quantum Cosmology (gr-qc)

[|arXiv:1201.3779] [ [|pdf], [|ps] , [|other] ] Investigation of Some Physical Properties of Accretion Induced Collapse in Producing Millisecond Pulsars [|Ali Taani] , [|ChengMin Zhang], [|Mashhoor Al-Wardat] , [|YongHeng Zhao]   Comments: 9 Pages, 4 figures Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) [|arXiv:1201.3692] [ [|pdf], [|ps] , [|other] ] An Old Supernova Remnant within an HII Complex at l {\approx} 173{\circ}: FVW 172.8+1.5  [|Ji-hyun Kang] , [|Bon-Chul Koo] , [|Chris Salter]   Comments: 31 pages, 11 figures, AJ accepted Subjects: Galaxy Astrophysics (astro-ph.GA)

=18 Ene 2012:=

[|arXiv:1201.3447] [ [|pdf], [|ps] , [|other] ] The Diffuse Gamma-ray Background from Type Ia Supernovae [|Amy Lien], [|Brian D. Fields]   Comments: 29 pages, 4 figures, Accepted for publication in ApJ  Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO) ; High Energy Astrophysical Phenomena (astro-ph.HE)

=17 Ene 2012:=

[|arXiv:1201.3281] [ [|pdf], [|ps] , [|other] ] [FeII] as a tracer supernova rate [|M. J. F. Rosenberg], [|P. P. van der Werf] , [|F. P. Israel]   Comments: Conference proceedings for Astronomy at High Angular Resolution 2011: The Central Kiloparsec in Galactic Nuclei  Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO) ; Galaxy Astrophysics (astro-ph.GA) [|arXiv:1201.3224] [ [|pdf], [|other] ] Suzaku study of centrally brightened supernova remnant G272.2-3.2 [|A. Sezer], [|F. Gok]   Comments: 7 pages, 4 figures Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) [|arXiv:1201.3101] [ [|pdf], [|ps] , [|other] ] The missing compact star of SN1987A: a solid quark star? [|X. W. Liu], [|J. D. Liang] , [|R. X. Xu] , [|J. L. Han] , [|G. J. Qiao]  Comments: 5 pages, 2 figures (submitted to MNRAS) Subjects: High Energy Astrophysical Phenomena (astro-ph.HE)

=16 Ene 2012:=

[|arXiv:1201.2913] [ [|pdf], [|ps] , [|other] ] The Standardizability of Type Ia Supernovae in the Near-Infrared: Evidence for a Peak Luminosity-Decline Rate Relation in the Near-Infrared [|ShiAnne Kattner], [|Douglas C. Leonard] , [|Christopher R. Burns] , [|M. M. Phillips] , [|Gaston Folatelli] , [|Nidia Morrell] , [|Maximilian D. Stritzinger] , [|Mario Hamuy] , [|Wendy L. Freedman] , [|Sven E. Persson] , [|Miguel Roth] , [|Nicholas B. Suntzeff]   Comments: Accepted for publication in PASP; 46 page, 10 figures  Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO)

=13 Ene 2012:=

[|arXiv:1201.2484] [ [|pdf], [|ps] , [|other] ] Transport of angular momentum and chemical species by anisotropic mixing in stellar radiative interiors [|L. L. Kitchatinov], [|A. Brandenburg]   Comments: 7 pages, 4 figures, submitted to Astronomische Nachrichten  Subjects: Solar and Stellar Astrophysics (astro-ph.SR) [|arXiv:1201.2470] [ [|pdf], [|other] ] A Type Ia Supernova at Redshift 1.55 in Hubble Space Telescope Infrared Observations from CANDELS  [|Steven A. Rodney] , [|Adam G. Riess] , [|Tomas Dahlen] , [|Louis-Gregory Strolger] , [|Henry C. Ferguson] , [|Jens Hjorth] , [|Teddy F. Frederiksen] , [|Benjamin J. Weiner] , [|Bahram Mobasher] , [|Stefano Casertano] , [|David O. Jones] , [|Peter Challis] , [|S. M. Faber] , [|Alexei V. Filippenko] , [|Peter Garnavich] , [|Or Graur] , [|Norman A. Grogin] , [|Brian Hayden] , [|Saurabh W. Jha] , [|Robert P. Kirshner] , [|Dale Kocevski] , [|Anton Koekemoer] , [|Curtis McCully] , [|Brandon Patel] , [|Abhijith Rajan] , [|Claudia Scarlata]   Comments: 10 pages, 6 figures, accepted for publication in ApJ Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) ; Cosmology and Extragalactic Astrophysics (astro-ph.CO)

[|arXiv:1201.2406] [ [|pdf], [|other] ] How the merger of two white dwarfs depends on their mass ratio: orbital stability and detonations at contact [|Marius Dan] (1), [|Stephan Rosswog] (1 and 2), [|James Guillochon] (2), [|Enrico Ramirez-Ruiz] (2) ((1) Jacobs University Bremen, (2) UC Santa Cruz)  Comments: 13 pages, 10 figures, submitted to MNRAS Subjects: High Energy Astrophysical Phenomena (astro-ph.HE)

=12 Ene 2012=

[|arXiv:1201.2393] [ [|pdf], [|ps] , [|other] ] Classical Novae in Andromeda: Light Curves from the Palomar Transient Factory and GALEX [|Yi Cao], [|Mansi M. Kasliwal] , [|James D. Neill] , [|S. R. Kulkarni] , [|Yu-Qing Lou] , [|Sagi Ben-Ami] , [|Joshua S. Bloom] , [|S. Bradley Cenko] , [|Nicholas M. Law] , [|Peter E. Nugent] , [|Eran O. Ofek] , [|Dovi Poznanski] , [|Robert M. Quimby]   Comments: 18 pages, 13 figures, submitted to ApJ  Subjects: Solar and Stellar Astrophysics (astro-ph.SR) [|arXiv:1201.2364] [ [|pdf], [|other] ] Evolution of massive population III stars with rotation and magnetic fields  [|S.-C. Yoon] , [|A. Dierks] , [|N. Langer]   Comments: 30 pages, 21 figues, 6 tables, revised version for A&amp;A following the referee's report Subjects: Solar and Stellar Astrophysics (astro-ph.SR) ; High Energy Astrophysical Phenomena (astro-ph.HE) [|arXiv:1201.2195] [ [|pdf] ] The center of the Type Ia supernova remnant SNR 0509-67.5 is empty of any ex-companion star to M_V=+8.4 [|Bradley E. Schaefer], [|Ashley Pagnotta]   Comments: Nature, 12 January 2012, includes Supplementary Information Subjects: Solar and Stellar Astrophysics (astro-ph.SR) =11 Ene 2012:=

[|arXiv:1201.2133] [ [|pdf], [|ps] , [|other] ] Thermonuclear fusion in dense stars: Electron screening, conductive cooling, and magnetic field effects [|A. Y. Potekhin] (1,2,3), [|G. Chabrier] (1,4) ((1) Centre de Recherche Astrophysique de Lyon, (2) Ioffe Institute, (3) INI of Chile, St.Petersburg Branch, (4) University of Exeter)  Comments: 9 pages, 5 figures, accepted for publication in A&amp;A  Subjects: Solar and Stellar Astrophysics (astro-ph.SR) =10 Ene 2012:=

[|arXiv:1201.1506] [ [|pdf], [|ps] , [|other] ] How much H and He is "hidden" in SNe Ib/c? I. - low-mass objects [|S. Hachinger], [|P. A. Mazzali] , [|S. Taubenberger] , [|W. Hillebrandt] , [|K. Nomoto] , [|D. N. Sauer]   Comments: 19 pages, 12 figures. Accepted for publication in MNRAS Subjects: Solar and Stellar Astrophysics (astro-ph.SR) ; High Energy Astrophysical Phenomena (astro-ph.HE) [|arXiv:1201.1651] [ [|pdf], [|ps] , [|other] ] Interactions in massive binary stars as seen by interferometry [|Florentin Millour] (FIZEAU), [|Anthony Meilland] (FIZEAU), [|Philippe Stee] (FIZEAU), [|Olivier Chesneau] (FIZEAU)  Comments: From solar environment to stellar environment, Roscoff : France (2011)  Subjects: Solar and Stellar Astrophysics (astro-ph.SR) [|arXiv:1201.1723] [ [|pdf], [|ps] , [|other] ] Near-infrared light curves of type Ia supernovae [|Dennis Jack], [|Peter H. Hauschildt] , [|E. Baron]   Comments: 5 pages, 12 figures, A&amp;A in press  Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) =9 Ene 2012:=

[|arXiv:1201.1328] [ [|pdf], [|ps] , [|other] ] Effects of Rotation on the Minimum Mass of Primordial Progenitors of Pair Instability Supernovae [|Emmanouil Chatzopoulos], [|J. Craig Wheeler]   Comments: 23 pages, 8 figures  Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) [|arXiv:1201.1311] [ [|pdf], [|other] ] Testing the universality of star formation - I. Multiplicity in nearby star-forming regions [|Robert R. King], [|Richard J. Parker] , [|Jenny Patience] , [|Simon P. Goodwin]   Comments: Accepted for publication in MNRAS, 19 pages, 22 figures  Subjects: Solar and Stellar Astrophysics (astro-ph.SR) ; Galaxy Astrophysics (astro-ph.GA) =6 Ene 2012:=

[|arXiv:1201.1279] [ [|pdf], [|ps] , [|other] ] Studying Supernovae in the Near-Ultraviolet with the NASA Swift UVOT Instrument [|P. A. Milne], [|P. J. Brown]   Comments: To appear in conference proceedings for "Extreme and Variable High Energy Sky 2011"  Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO) ; High Energy Astrophysical Phenomena (astro-ph.HE) [|arXiv:1201.1260] [ [|pdf], [|ps] , [|other] ] Constraining H0 from Lyman-alpha Forest and Baryon Acoustic Oscillations [|V. C. Busti] , [|R. N. Guimarães] , [|J. A. S. Lima]   Comments: 20 pages, 3 figures, 1 table Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO) ; General Relativity and Quantum Cosmology (gr-qc) [|arXiv:1201.1225] [ [|pdf], [|other] ] The effect of 12C + 12C rate uncertainties on the evolution and nucleosynthesis of massive stars [|M. E. Bennett] , [|R. Hirschi] , [|M. Pignatari] , [|S. Diehl], [|C. Fryer] , [|F. Herwig] , [|A. Hungerford] , [|K. Nomoto] , [|G. Rockefeller] , [|F. X. Timmes] , [|M. Wiescher]   Comments: The paper contains 17 figures and 7 tables. Table 7 will be published in full online only Subjects: Solar and Stellar Astrophysics (astro-ph.SR) [|arXiv:1201.1061] [ [|pdf], [|ps] , [|other] ] Numerical Calculation of Convection with Reduced Speed of Sound Technique  [|H. Hotta] , [|M. Rempel] , [|T. Yokoyama] , [|Y. Iida] , [|Y. Fan]   Comments: 16 pages, 10 figures, accepted to A&amp;A Subjects: Solar and Stellar Astrophysics (astro-ph.SR) [|arXiv:1201.0998] [ [|pdf], [|other] ] The Role of White Dwarfs in Cataclysmic Variable Spin-down  [|O. Cohen] , [|J. J. Drake] , [|V. L. Kashyap]   Comments: 7 pages, 3 figures, 1 table, accepted to ApJ Letters Subjects: Solar and Stellar Astrophysics (astro-ph.SR) =5 Ene 2012:=

[|arXiv:1201.0771] [ [|pdf], [|ps] , [|other] ] VLBI Observations of the Nearby Type IIb Supernova 2011dh [|M. F. Bietenholz], [|A. Brunthaler], [|A. M. Soderberg] , [|M. Krauss] , [|N. Bartel] , [|L. Chomiuk] , [|M. P. Rupen]  Comments: 8 pages; submitted to Astrophysical Journal  Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) [|arXiv:1201.0770] [ [|pdf], [|ps] , [|other] ] EVLA Observations of the Radio Evolution of SN 2011dh [|M. I. Krauss], [|A. M. Soderberg] , [|L. Chomiuk] , [|B. A. Zauderer] , [|A. Brunthaler] , [|M. F. Bietenholz] , [|R. A. Chevalier] , [|C. Fransson] , [|M. Rupen]   Comments: 6 pages, 2 figures; submitted to ApJL  Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) =4 Ene 2012:=

[|arXiv:1201.0577] [ [|pdf], [|ps] , [|other] ] Using the VO to Study the Time Domain [|Rob Seaman], [|Roy Williams] , [|Matthew Graham] , [|Tara Murphy]   Comments: Contribution to the proceedings of IAU Symposium 285, "New Horizons in Time Domain Astronomy": [|this http URL] , 6 pages  Subjects: Instrumentation and Methods for Astrophysics (astro-ph.IM)

=30 Dic 2011:=

[|arXiv:1112.6373] [ [|pdf], [|other] ] On the Amplification of Magnetic Field by a Supernova Blast Shock Wave in a Turbulent Medium [|Fan Guo], [|Shengtai Li] , [|Hui Li] , [|Joe Giacalone] , [|J. R. Jokipii] , [|David Li]   Comments: 14 pages, 9 figures. Accepted by ApJ Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) ; Galaxy Astrophysics (astro-ph.GA) [|arXiv:1112.6328] [ [|pdf], [|ps] , [|other] ] Strange matter in core-collapse supernovae [|I. Sagert], [|T. Fischer] , [|M. Hempel] , [|G. Pagliara] , [|J. Schaffner-Bielich] , [|F.-K. Thielemann] , [|M. Liebendörfer]   Comments: 8 pages, 3 figures, Invited talk at the "Strangeness in Quark Matter" conference, 18-24 September 2011, Polish Academy of Arts and Sciences, Cracow, Poland Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) [|arXiv:1112.5949] [ [|pdf], [|ps] , [|other] ] New insights on the duration distribution of long GRBs from Collapsars [|Omer Bromberg] , [|Ehud Nakar] , [|Tsvi Piran] , [|Re'em Sari]   Comments: 7 pages, 2 figures. To appear in: proceedings of the INTEGRAL conference "The Extreme and Variable High Energy Sky", held on September 19-23, 2011 in Chia Laguna, Cagliari, Italy; Proceedings of Science, SISSA, in press Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) [|arXiv:1112.5925] [ [|pdf], [|ps] , [|other] ] Vortex Tubes of Turbulent Solar Convection  [|I. N. Kitiashvili] , [|A. G. Kosovichev] , [|N. N. Mansour] , [|S. K. Lele] , [|A. A. Wray]   Comments: submitted to Physical Scripta, 15 pages, 10 figures Subjects: Solar and Stellar Astrophysics (astro-ph.SR) ; Computational Physics (physics.comp-ph); Fluid Dynamics (physics.flu-dyn); Plasma Physics (physics.plasm-ph)

[|arXiv:1112.5684] [ [|pdf], [|ps] , [|other] ] Nucleosynthesis in core-collapse supernova explosions triggered by a quark-hadron phase transition [|Nobuya Nishimura] , [|Tobias Fischer] , [|Friedrich-Karl Thielemann] , [|Carla Fröhlich] , [|Matthias Hempel] , [|Roger Käppeli] , [|Gabriel Martínez-Pinedo] , [|Thomas Rauscher] , [|Irina Sagert] , [|Christian Winteler]   Comments: 12 pages, 11 figures, submitted to ApJ Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) ; Solar and Stellar Astrophysics (astro-ph.SR); Nuclear Theory (nucl-th)

=26 Dic 2011:=

[|arXiv:1112.5528] [ [|pdf], [|ps] , [|other] ] Long-term evolution of massive star explosions [|T. Fischer], [|M. Liebendörfer] , [|F.-K. Thielemann] , [|G. Martínez-Pinedo] , [|B. Ziebarth] , [|K. Langanke]   Comments: 12 pages, 7 figures, conference proceeding, HANSE 2011 workshop  Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) =23 Dic 2011:=

[|arXiv:1112.5207] [ [|pdf], [|other] ] The Source Density and Observability of Pair-Instability Supernovae from the First Stars [|Jacob Hummel], [|Andreas Pawlik] , [|Milos Milosavljevic] , [|Volker Bromm]   Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO) ; High Energy Astrophysical Phenomena (astro-ph.HE) =22 Dic 2011:=

[|arXiv:1112.4925] [ [|pdf], [|other] ] The Core Composition of a White Dwarf in a Close Double Degenerate System [|S. Vennes], [|A. Kawka]   Comments: Accepted for publication in ApJ Letters  Subjects: Solar and Stellar Astrophysics (astro-ph.SR) [|arXiv:1112.4851] [ [|pdf], [|ps] , [|other] ] The Palomar Transient Factory photometric calibration [|E. O. Ofek] , [|R. Laher] , [|N. Law] , [|J. Surace] , [|D. Levitan] , [|B. Sesar] , [|A. Horesh] , [|D. Poznanski] , [|J. C. van Eyken] , [|S. R. Kulkarni] , [|P. Nugent] , [|J. Zolkower] , [|R. Walters] , [|M. Sullivan] , [|M. Agueros] , [|L. Bildsten] , [|J. Bloom] , [|S. B. Cenko] , [|A. Gal-Yam] , [|C. Grillmair] , [|G. Helou] , [|M. M. Kasliwal] , [|R. Quimby]   Comments: Accepted to PASP, 10 pages Subjects: Instrumentation and Methods for Astrophysics (astro-ph.IM) [|arXiv:1112.4976] [ [|pdf], [|ps] , [|other] ] Very-high-energy gamma radiation from supernova remnants as seen with H.E.S.S  [|Anne Bochow] , [|Svenja Carrigan] , [|Henning Gast] , [|Vincent Marandon] , [|Matthieu Renaud] , [|Werner Hofmann] , for the [|H.E.S.S. Collaboration]   Comments: Proceeding of the 32nd ICRC, August 11-18 2011, Beijing, China Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) =21 Dic 2011:=

[|arXiv:1112.4819] [ [|pdf], [|other] ] A new model for mixing by double-diffusive convection (semi-convection): I. The conditions for layer formation [|Giovanni M. Mirouh], [|Pascale Garaud] , [|Stephan Stellmach] , [|Adrienne L. Traxler] , [|Toby S. Wood]   Comments: Submitted to ApJ  Subjects: Solar and Stellar Astrophysics (astro-ph.SR) ; Earth and Planetary Astrophysics (astro-ph.EP) [|arXiv:1112.4659] [ [|pdf], [|ps] , [|other] ] Spectral modeling of nebular-phase supernovae [|Anders Jerkstrand] Comments: PhD thesis. 84 pages Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) =16 Dic 2011:=

[|arXiv:1112.3592] [ [|pdf], [|other] ] A unified supernova catalogue [|Dirk Lennarz] (1 and 2), [|David Altmann] (1), [|Christopher Wiebusch] (1) ((1) III.Physikalisches Institut, RWTH Aachen University, Aachen, Germany, (2) Max-Planck-Institut für Kernphysik, Heidelberg, Germany)  Comments: 9 pages, 12 figures, accepted for publication in Astronomy &amp; Astrophysics. The catalogue is available at CDS, [|this http URL]  Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) ; Cosmology and Extragalactic Astrophysics (astro-ph.CO); Galaxy Astrophysics (astro-ph.GA) [|arXiv:1112.3569] [ [|pdf], [|ps] , [|other] ] Solar cycle properties described by simple convection-driven dynamos [|Radostin D. Simitev], [|Friedrich H. Busse]   Comments: Submitted to Physica Scripta on 15 Dec 2011 Subjects: Solar and Stellar Astrophysics (astro-ph.SR) ; Fluid Dynamics (physics.flu-dyn) [|arXiv:1112.3462] [ [|pdf], [|ps] , [|other] ] Cooling of young neutron stars in GRB associated to Supernova [|Rodrigo Negreiros] , [|Remo Ruffini] , [|Carlo Luciano Bianco] , [|Jorge A. Rueda]   Comments: Astronomy &amp; Astrophysics, accepted Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) ; General Relativity and Quantum Cosmology (gr-qc); Nuclear Theory (nucl-th) [|arXiv:1112.3448] [ [|pdf], [|ps] , [|other] ] A Shallow Water Analogue of the Standing Accretion Shock Instability: Experimental Demonstration and Two-Dimensional Model [|Thierry Foglizzo] (1), [|Frédéric Masset] (2,1), [|Jérôme Guilet] (3,1), [|Gilles Durand] (1) ((1) AIM, IRFU/SAp, CEA Saclay (2) ICF, UNAM (3) DAMTP Cambridge)  Comments: 4 pages, 4 figures, accepted for publication in Phys. Rev. Letters. Supplementary Material (6 movies) available at [|this http URL] Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) ; Fluid Dynamics (physics.flu-dyn) [|arXiv:1112.3342] [ [|pdf], [|other] ] The Hydrodynamic Origin of Neutron Star Kicks [|J. Nordhaus] (RIT), [|T. Brandt] (Princeton), [|A. Burrows] (Princeton), [|A. Almgren] (LBNL)  Comments: Submitted to MNRAS Subjects: Solar and Stellar Astrophysics (astro-ph.SR) =15 Dic 2011:=

[|arXiv:1112.3194] [ [|pdf], [|ps] , [|other] ] Time-Dependent Escape of Cosmic Rays from Supernova Remnants, and their Interaction with Dense Media [|I. Telezhinsky], [|V. V. Dwarkadas] , [|M. Pohl]   Comments: 10 pages, 8 figures. Submitted to A&amp;A Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) =14 Dic 2011:= [|arXiv:1112.3033] [ [|pdf], [|ps] , [|other] ] Conservative Initial Mapping For Multidimensional Simulations of Stellar Explosions [|Ke-Jung Chen] (1), [|Alexander Heger] (1), [|Ann Almgren] (2) ((1) University of Minnesota, (2) Lawrence Berkeley National Lab)  Comments: 7 pages, 5 figures, Proceeding for Conference on Computational Physics (CCP 2011)  Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) ; Computational Physics (physics.comp-ph) [|arXiv:1112.3020] [ [|pdf], [|ps] , [|other] ] Nearby supernova remnants and the cosmic-ray spectral hardening at high energies [|Satyendra Thoudam], [|Jörg R. Hörandel] (RU Nijmegen)  Comments: 6 pages, MNRAS accepted Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) [|arXiv:1112.2970] [ [|pdf], [|other] ] Evidence for a proto-black hole and a double astrophysical component in GRB 101023 [|A. V. Penacchioni] , [|R. Ruffini] , [|L. Izzo] , [|M. Muccino] , [|C. L. Bianco] , [|L. Caito] , [|B. Patricelli] , [|L. Amati]   Comments: 11 pages, 18 figures, to appear on A&amp;A Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) ; Cosmology and Extragalactic Astrophysics (astro-ph.CO)

[|arXiv:1112.2710] [ [|pdf], [|ps] , [|other] ] Pair-Instability Supernovae at the Epoch of Reionization [|Tony Pan] , [|Daniel Kasen] , [|Abraham Loeb]   Comments: 12 pages, 11 figures. Submitted to MNRAS. arXiv admin note: some text overlap with [|arXiv:0809.3926] Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) ; Cosmology and Extragalactic Astrophysics (astro-ph.C

=13 Dic 2011:= [|arXiv:1112.2574] [ [|pdf], [|ps] , [|other] ] A fully automated data reduction pipeline for the FRODOSpec integral field spectrograph [|R. M. Barnsley], [|R. J. Smith] , [|I. A. Steele]   Comments: 18 pages, 17 figures. Accepted for publication in AN Subjects: Instrumentation and Methods for Astrophysics (astro-ph.IM) [|arXiv:1112.2685] [ [|pdf], [|ps] , [|other] ] New Galactic Candidate Luminous Blue Variables and Wolf-Rayet Stars [|Guy S. Stringfellow], [|Vasilii V. Gvaramadze] , [|Yuri Beletsky] , [|Alexei Y. Kniazev]   Comments: 2 pages, 1 figure. To appear in IAU 282 proceedings "From Interacting Binaries to Exoplanets: Essential Modeling Tools", Mercedes Richards \&amp; Ivan Hubeny, eds Subjects: Galaxy Astrophysics (astro-ph.GA) ; Solar and Stellar Astrophysics (astro-ph.SR) [|arXiv:1112.2673] [ [|pdf], [|ps] , [|other] ] Nucleosynthesis of Nickel-56 from Gamma-Ray Burst Accretion Disks [|R. Surman], [|G. C. McLaughlin] , [|N. Sabbatino]   Comments: 10 pages, 9 figures Journal-ref: Astrophysical Journal, Vol. 743, p. 155 (2011) Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) ; Nuclear Theory (nucl-th) [|arXiv:1112.2589] [ [|pdf], [|ps] , [|other] ] On the Progenitors of Galactic Novae [|M. J. Darnley] (1), [|V. A. R. M. Ribeiro] (1 and 2), [|M. F. Bode] (1), [|R. A. Hounsell] (1), [|R. P. Williams] (1 and 3) ((1) Astrophysics Research Institute, Liverpool John Moores University, Egerton Wharf, Birkenhead, CH41 1LD, UK, (2) Astrophysics, Cosmology and Gravity Centre, Department of Astronomy, University of Cape Town, Private Bag X3, Rondebosch 7701, South Africa, (3) Department of Physics, The University of Liverpool, Liverpool, L69 7ZE, UK)  Comments: 10 pages, 4 figures, accepted for publication in the Astrophysical Journal Subjects: Solar and Stellar Astrophysics (astro-ph.SR)

[|arXiv:1112.2247] [ [|pdf], [|ps] , [|other] ] The spectroscopic evolution of the symbiotic-like recurrent nova V407 Cygni during its 2010 outburst. II. The circumstellar environment and the aftermath [|S. N. Shore] (Univ. of Pisa, INFN-Pisa), [|G. M. Wahlgren] (CUA, GSFC-NASA), [|T. Augusteijn] (NOT), [|T. Liimets] (NOT, Tartu Obs), [|P. Koubsky], [|M. Slechta] , [|V. Votruba] (Ondrejov Obs.)  Comments: accepted for publication in A&amp;A (9/12/11) Subjects: Solar and Stellar Astrophysics (astro-ph.SR) =12 Dic 2011:= [|arXiv:1112.1979] [ [|pdf], [|ps] , [|other] ] Gamma-ray Activity in the Crab Nebula: The Exceptional Flare of April 2011 [|R. Buehler], [|J. D. Scargle] , [|R. D. Blandford] , [|L. Baldini] , [|M. G. Baring] , [|A. Belfiore] , [|E. Charles] , [|J. Chiang] , [|F. D'Ammando] , [|C. D. Dermer] , [|S. Funk] , [|J. E. Grove] , [|A. K. Harding] , [|E. Hays] , [|M. Kerr] , [|F. Massaro] , [|M. N. Mazziotta] , [|R. W. Romani] , [|P. M. Saz Parkinson] , [|A. F. Tennant] , [|M. C. Weisskopf]   Comments: 12 pages, 7 figures, submitted for publication  Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) [|arXiv:1112.1972] [ [|pdf], [|ps] , [|other] ] A Survey of Far Ultraviolet Spectroscopic Explorer Observations of Cataclysmic Variables  [|C.S. Froning] , [|K.S. Long] , [|B. Gaensicke] , [|P. Szkody]   Comments: ApJS, in press. The extra panels in the figure sets for Figures 1 and 2 are included at the end of the manuscript Subjects: Galaxy Astrophysics (astro-ph.GA) [|arXiv:1112.2136] (cross-list from nucl-th) [ [|pdf], [|other] ] Low-temperature triple-alpha rate in a full three-body model [|N.B. Nguyen] , [|F.M. Nunes] , [|I.J. Thompson] , [|E.F. Brown]   Comments: 3 figures Subjects: Nuclear Theory (nucl-th) ; Solar and Stellar Astrophysics (astro-ph.SR); Nuclear Experiment (nucl-ex) =9 Dic 2011:= [|arXiv:1112.1920] [ [|pdf], [|ps] , [|other] ] General Relativistic Explosion Models of Core-Collapse Supernovae [|Bernhard Mueller], [|Andreas Marek] , [|Hans-Thomas Janka] , [|Harald Dimmelmeier]   Comments: Contribution to the proceedings of ASTRONUM-2011, 6 pages, 2 figures  Subjects: Solar and Stellar Astrophysics (astro-ph.SR) ; General Relativity and Quantum Cosmology (gr-qc) [|arXiv:1112.1913] [ [|pdf], [|ps] , [|other] ] Core-Collapse Supernovae: Explosion Dynamics, Neutrinos and Gravitational Waves [|Bernhard Mueller], [|Hans-Thomas Janka] , [|Andreas Marek] , [|Florian Hanke] , [|Annop Wongwathanarat] , [|Ewald Mueller] (MPI Astrophysik, Garching)  Comments: Contribution to the Proceedings of HANSE 2011 workshop, 8 pages, 4 figures Subjects: Solar and Stellar Astrophysics (astro-ph.SR) [|arXiv:1112.1845] [ [|pdf], [|ps] , [|other] ] Circumstellar disks in binary star systems  [|Tobias W. A. Müller] , [|Wilhelm Kley]   Comments: 12 pages, 15 figures, accepted for publication in A&amp;A Subjects: Earth and Planetary Astrophysics (astro-ph.EP) [|arXiv:1112.1745] [ [|pdf], [|ps] , [|other] ] Measurement Error Models in Astronomy [|Brandon C. Kelly] Comments: 15 pages, 2 figures, review based on invited talk at "Statistical Challenges in Modern Astronomy V", held at Penn State in June 2011, to appear in the proceedings Subjects: Instrumentation and Methods for Astrophysics (astro-ph.IM) ; Data Analysis, Statistics and Probability (physics.data-an) [|arXiv:1111.4617] (cross-list from nucl-th) [ [|pdf], [|ps] , [|other] ] Rapidly rotating axisymmetric compact stars [|Abhishek Mishra], [|Partha Roy Chowdhury] , [|D. N. Basu]   Comments: 5 pages including 5 figures; Accepted for presentation at DAE Symposium on Nuclear Physics, December 26-30, 2011, Department of Nuclear Physics, Andhra University, Visakhapatnam, A.P., India Subjects: Nuclear Theory (nucl-th) ; High Energy Astrophysical Phenomena (astro-ph.HE); Solar and Stellar Astrophysics (astro-ph.SR); High Energy Physics - Phenomenology (hep-ph) =8 Dic 2011:= [|arXiv:1112.1420] [ [|pdf], [|other] ] Remnants of Binary White Dwarf Mergers [|Cody Raskin], [|Evan Scannapieco] , [|Chris Fryer] , [|Gabriel Rockefeller] , [|F. X. Timmes]   Comments: 17 pages, 11 figures, Accepted to ApJ  Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) =7 Dic 2011:= [|arXiv:1112.1165] [ [|pdf], [|ps] , [|other] ] Binary interactions on the calibrations of star formation rate [|F. Zhang], [|L. Li] , [|Y. Zhang] , [|X. Kang] , [|Z. Han]   Comments: 17 pages, 21 figures, 5 tables  Journal-ref: 2011, MNRAS  Subjects: Solar and Stellar Astrophysics (astro-ph.SR) = = =6 Dic 2011:= = [|arXiv:1112.0952] [ [|pdf], [|ps] , [|other] ] = The theory of stellar winds [|Jorick S. Vink] (Armagh Observatory)  Comments: 6 pages, invited review Astrophysics and Space Science, Vol 336, Issue 1, pp. 163-167 (special HEDLA 2010 Issue)  Subjects: Solar and Stellar Astrophysics (astro-ph.SR) ; Cosmology and Extragalactic Astrophysics (astro-ph.CO); Galaxy Astrophysics (astro-ph.GA); High Energy Astrophysical Phenomena (astro-ph.HE) [|arXiv:1112.0777] [ [|pdf], [|ps] , [|other] ] Discovery of Two Supernovae in the Nuclear Regions of the Luminous Infrared Galaxy IC 883 [|E. Kankare], [|S. Mattila] , [|S. Ryder] , [|P. Vaisanen] , [|A. Alberdi] , [|A. Alonso-Herrero] , [|L. Colina] , [|A. Efstathiou] , [|J. Kotilainen] , [|J. Melinder] , [|M.-A. Perez-Torres] , [|C. Romero-Canizales] , [|A. Takalo]   Comments: 6 pages, 3 figures, accepted for ApJ Letters Subjects: Solar and Stellar Astrophysics (astro-ph.SR) ; Galaxy Astrophysics (astro-ph.GA)

[|arXiv:1112.0706] [ [|pdf], [|ps] , [|other] ] Type Ia Supernovae and the discovery of the Cosmic Acceleration [|Alejandro Clocchiatti] Comments: Review presented at the "International Conference on Two Cosmological Models," held at Universidad Iberoamericana, in Mexico City, November 17-19, 2010. 27 pages, 7 figures, to be published in the conference proceedings Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO) ; Space Physics (physics.space-ph)

[|arXiv:1112.0593] [ [|pdf], [|ps] , [|other] ] The SN 393 -- SNR RX J1713.7-3946 (G347.3-0.5) Connection [|R. Fesen], [|R. Kremer] , [|D. Patnaude] , [|D. Milisavljevic]   Comments: 7 pages includes 2 tables. Accepted for publication in AJ Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) [|arXiv:1112.0576] [ [|pdf], [|ps] , [|other] ] Supernova remnants: the X-ray perspective [|Jacco Vink]  Comments: Astronomy and Astrophysics Review (in press). This version has 2 column-layout. 72 pages, 42 figures Subjects: High Energy Astrophysical Phenomena (astro-ph.HE)

=5 Dic 2011:= [|arXiv:1112.0439] [ [|pdf], [|ps] , [|other] ] = The supernova Ia 2011fe in M101, its tip of the red-giant branch (TRGB) distance, and the value of H_0 = [|G.A. Tammann], [|B. Reindl] (Department of Physics and Astronomy, Univ. of Basel) Comments: 4 pages (emulateapj), 1 figure, 2 tables, submitted to ApJL  Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO) [|arXiv:1112.0335] [ [|pdf], [|ps] , [|other] ] = Proto-Neutron Star Cooling with Convection: The Effect of the Symmetry Energy = [|Luke F. Roberts], [|Gang Shen] , [|Vincenzo Cirigliano] , [|Jose A. Pons] , [|Sanjay Reddy] , [|Stan E. Woosley]  Comments: 4 Pages, 3 Figures, Accepted to PRL Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) =2 Dic 2011:= = [|arXiv:1112.0308] [ [|pdf], [|ps] , [|other] ] = = All Transients, All the Time: Real-Time Radio Transient Detection with Interferometric Closure Quantities = [|Casey J. Law], [|Geoffrey C. Bower]  Comments: Submitted to ApJ. 7 pages, 4 figures, 2 tables Subjects: Instrumentation and Methods for Astrophysics (astro-ph.IM) [|arXiv:1112.0299] [ [|pdf], [|ps] , [|other] ] = It's Alive! The Supernova Impostor 1961V = [|Schuyler D. Van Dyk] (Spitzer Science Center/Caltech), [|Thomas Matheson] (NOAO) Comments: 15 pages, 6 figures, accepted to appear in the ApJ Subjects: Solar and Stellar Astrophysics (astro-ph.SR) ; Cosmology and Extragalactic Astrophysics (astro-ph.CO)

[|arXiv:1112.0247] [ [|pdf], [|other] ] = Multi-epoch high-resolution spectroscopy of SN2011fe - Linking the progenitor to its environment = [|F. Patat], [|M. A. Cordiner] , [|N. L. J. Cox] , [|R. I. Anderson] , [|A. Harutyunyan] , [|R. Kotak] , [|L. Palaversa] , [|V. Stanishev] , [|L. Tomasella] , [|S. Benetti] , [|A. Goobar] , [|A. Pastorello] , [|J. Sollerman]  Comments: 12 pages, 6 figures, submitted to Astronomy and Astrophysics Subjects: Solar and Stellar Astrophysics (astro-ph.SR) [|arXiv:1112.0187] [ [|pdf], [|other] ] = Around Gaia Alerts in 20 questions = [|Lukasz Wyrzykowski], [|Simon Hodgkin]  Comments: Text of the poster presented at the IAU Symposium #285 "New Horizons in Time Domain Astronomy", Oxford, UK, 19-23 September 2011, included in the proceedings Eds. R.E.M. Griffin, R.J. Hanisch &amp; R. Seaman. Original poster is available under this link: [|this http URL] Subjects: Instrumentation and Methods for Astrophysics (astro-ph.IM) [|arXiv:1112.0082] [ [|pdf], [|ps] , [|other] ] = The companion properties of SNe Ia from the single degenerate model = [|Xiangcun Meng], [|Wuming Yang]  Comments: 11 Pages, 4 figures Journal-ref: 2011, ScChG, 54, 2296 Subjects: Solar and Stellar Astrophysics (astro-ph.SR) [|arXiv:1112.0035] [ [|pdf], [|ps] , [|other] ] = Constraining the physical properties of Type II-P supernovae using nebular phase spectra = [|Kate Maguire], [|Anders Jerkstrand] , [|Stephen J. Smartt] , [|Claes Fransson] , [|Andrea Pastorello] , [|Stefano Benetti] , [|Stefano Valenti] , [|Filomena Bufano] , [|Giorgos Leloudas]  Comments: 18 pages, 15 figures, accepted for publication in MNRAS Subjects: Solar and Stellar Astrophysics (astro-ph.SR) ; Cosmology and Extragalactic Astrophysics (astro-ph.CO)

=1 Dic 2011:= = [|arXiv:1111.7030] [ [|pdf], [|other] ] = = Searching for soft relativistic jets in Core-collapse Supernovae with the IceCube Optical Follow-up Program = The [|IceCube Collaboration] : [|R. Abbasi], [|Y. Abdou] , [|T. Abu-Zayyad] , [|M. Ackermann] , [|J. Adams] , [|J. A. Aguilar] , [|M. Ahlers] , [|M. M. Allen] , [|D. Altmann] , [|K. Andeen] , [|J. Auffenberg] , [|X. Bai] , [|M. Baker] , [|S. W. Barwick] , [|R. Bay] , [|J. L. Bazo Alba] , [|K. Beattie] , [|J. J. Beatty] , [|S. Bechet] , [|J. K. Becker] , [|K.-H. Becker] , [|M. L. Benabderrahmane] , [|S. BenZvi] , [|J. Berdermann] , [|P. Berghaus] , [|D. Berley] , [|E. Bernardini] , [|D. Bertrand] , [|D. Z. Besson] , [|D. Bindig] , [|M. Bissok] , [|E. Blaufuss] , [|J. Blumenthal] , [|D. J. Boersma] , [|C. Bohm] , [|D. Bose] , [|S. Böser] , [|O. Botner] , [|A. M. Brown] , [|S. Buitink] , [|K. S. Caballero-Mora] , [|M. Carson] , [|D. Chirkin] , [|B. Christy] , [|F. Clevermann] , [|S. Cohen] , [|C. Colnard] , [|D. F. Cowen] , [|A. H. Cruz Silva] , [|M. V. D'Agostino] , [|M. Danninger] , [|J. Daughhetee] , [|J. C. Davis] , [|C. De Clercq] , [|T. Degner] , [|L. Demirörs] , [|F. Descamps] , [|P. Desiati] , [|G. de Vries-Uiterweerd] , et al. (204 additional authors not shown) Comments: 13 pages, 12 figures, submitted to A&amp;A  Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) [|rXiv:1111.7003] [ [|pdf], [|ps] , [|other] ] = Yellow supergiants as supernova progenitors: an indication of strong mass loss for red supergiants? = [|Cyril Georgy] Comments: 5 pages, 4 figures, accepted for publication in Astronomy and Astrophysics Subjects: Solar and Stellar Astrophysics (astro-ph.SR) =30 Nov 2011:= = [|arXiv:1111.6627] [ [|pdf], [|ps] , [|other] ] = = Dust in Historical Galactic Type Ia Supernova Remnants with Herschel = [|H. L. Gomez], [|C. J. R. Clark] , [|T. Nozawa] , [|O. Krause] , [|E. L. Gomez] , [|M. Matsuura] , [|M. J. Barlow] , [|M.-A. Besel] , [|L. Dunne] , [|W. K. Gear] , [|P. Hargrave] , [|Th. Henning] , [|R. J. Ivison] , [|B. Sibthorpe] , [|B. M. Swinyard] , [|R. Wesson]  Comments: 17 pages, 14 figures, accepted for publication in MNRAS  Subjects: Galaxy Astrophysics (astro-ph.GA) ; Solar and Stellar Astrophysics (astro-ph.SR) [|arXiv:1111.6593] [ [|pdf], [|ps] , [|other] ] = Type Ia supernovae in globular clusters: observational upper limits = [|R. Voss], [|G. Nelemans]  Comments: Accepted by A&amp;A Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) ; Galaxy Astrophysics (astro-ph.GA); Solar and Stellar Astrophysics (astro-ph.SR) =29 Nov 2011:= = [|arXiv:1111.6282] [ [|pdf], [|other] ] = = New Aspects and Boundary Conditions of Core-Collapse Supernova Theory = [|C. D. Ott], [|E. P. O'Connor] , [|B. Dasgupta]  Comments: 14 pages, 3 figures. Submitted to the proceedings of the HAmburg Neutrinos from Supernova Explosions (HANSE) 2011 conference Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) ; High Energy Physics - Phenomenology (hep-ph) [|arXiv:1111.6109] [ [|pdf], [|ps] , [|other] ] = Calcium-rich gap transients in the remote outskirts of galaxies = [|Mansi M. Kasliwal], [|S. R. Kulkarni] , [|Avishay Gal-Yam] , [|Peter E. Nugent] , [|Mark Sullivan] , [|Lars Bildsten] , [|Ofer Yaron] , [|Hagai B. Perets] , [|Iair Arcavi] , [|Sagi Ben-Ami] , [|Varun B. Bhalerao] , [|Joshua S. Bloom] , [|S. Bradley Cenko] , [|Alexei V. Filippenko] , [|Dale A. Frail] , [|Mohan Ganeshalingam] , [|Assaf Horesh] , [|D. Andrew Howell] , [|Nicholas M. Law] , [|Douglas C. Leonard] , [|Weidong Li] , [|Eran O. Ofek] , [|David Polishook] , [|Dovi Poznanski] , [|Robert M. Quimby] , [|Jeffrey M. Silverman] , [|Assaf Sternberg] , [|Dong Xu]  Comments: 12 figures, 3 tables  Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) ; Cosmology and Extragalactic Astrophysics (astro-ph.CO); Solar and Stellar Astrophysics (astro-ph.SR) =24 Nov 2011:= = [|arXiv:1111.5605] [ [|pdf], [|ps] , [|other] ] = = Dark matter and dark energy accretion onto intermediate-mass black holes = [|C. Pepe], [|L. J. Pellizza] , [|G. E. Romero]  Comments: 5 pages, 3 figures, accepted for publication in MNRAS  Subjects: High Energy Astrophysical Phenomena (astro-ph.HE)

[|arXiv:1111.5584] [ [|pdf] ] = Astrophysical Explosions: From Solar Flares to Cosmic Gamma-ray Bursts = [|J. Craig Wheeler]  Comments: 26 pages, 11 Figures. To be published in the Special Issue on Physics, Chemistry and Dynamics of Explosions of the Philosophical Transactions of the Royal Society Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) [|arXiv:1111.5524] [ [|pdf], [|ps] , [|other] ] = Investigation of the Progenitors of Nova Explosions = [|Farung Surina], [|Mike F. Bode] , [|Matt J. Darnley]  Subjects: Solar and Stellar Astrophysics (astro-ph.SR) =23 Nov 2011:= [|arXiv:1111.5328] [ [|pdf], [|other] ] = Photometric Supernova Cosmology with BEAMS and SDSS-II = [|Renée Hlozek], [|Martin Kunz] , [|Bruce Bassett] , [|Mat Smith] , [|James Newling] , [|Melvin Varughese] , [|Rick Kessler] , [|Joe Bernstein] , [|Heather Campbell] , [|Ben Dilday] , [|Bridget Falck] , [|Joshua Frieman] , [|Steve Kulhmann] , [|Hubert Lampeitl] , [|John Marriner] , [|Robert C. Nichol] , [|Adam G. Riess] , [|Masao Sako] , [|Donald P. Schneider]  Comments: 25 pages, 15 figures, submitted to ApJ  Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO) =  [|arXiv:1111.5325] [ [|pdf], [|ps] , [|other] ]   = NGC3801 caught in the act: A post-merger starforming early-type galaxy with AGN-jet feedback [|Ananda Hota], [|Soo-Chang Rey] , [|Yongbeom Kang] , [|Suk Kim] , [|Satoki Matsushita] , [|Jiwon Chung]   Comments: 5 pages letter paper, 4 figures, 1 table, (submitted) Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO) [|arXiv:1111.5314] [ [|pdf] , [|ps] , [|other] ] Evolution and Hydrodynamics of the Very-Broad X-ray Line Emission in SN 1987A [|D. Dewey], [|V. V. Dwarkadas] , [|F. Haberl] , [|R. Sturm] , [|C. R. Canizares]   Comments: 36 pages, 14 figures, to be submitted to ApJ Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) ; Instrumentation and Methods for Astrophysics (astro-ph.IM) = [|arXiv:1111.5237] [ [|pdf], [|ps] , [|other] ] = = Generalized Semi-Analytical Models of Supernova Light Curves = [|Emmanouil Chatzopoulos], [|J. Craig Wheeler] , [|Jozsef Vinko]  Comments: 48 pages, 13 figures  Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) [|arXiv:1111.5041] [ [|pdf], [|ps] , [|other] ] = Late-time Light Curves of Type II Supernovae: Physical Properties of SNe and Their Environment = [|Masaaki Otsuka], [|Margaret Meixner], [|Nino Panagia] , [|Joanna Fabbri] , [|Michael J. Barlow] , [|Geoffrey C. Clayton] , [|Joseph S. Gallagher] , [|Ben E. K. Sugerman] , [|Roger Wesson] , [|Jennifer E. Andrews] , [|Barbara Ercolano] , [|Douglas Welch]  Comments: 13 pages, 8 figures, 8 tables, accepted for publication in ApJ Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO)

=22 Nov 2011:= = [|arXiv:1111.4941] [ [|pdf], [|other] ] = = Classical and Recurrent Nova Outbursts = [|M. F. Bode]  Comments: 10 pages, 2 figures. Review paper submitted to the proceedings of the 11th Asian-Pacific Regional IAU Meeting 2011, NARIT Conference Series, Vol. 1, 2012. S. Komonjinda, Y. Kovalev, and D. Ruffolo, eds Subjects: Solar and Stellar Astrophysics (astro-ph.SR) [|arXiv:1111.4527] [ [|pdf], [|ps] , [|other] ] = The Fast and Faint SN 2010bh Associated with GRB 100316D = [|Filomena Bufano] (1), [|Elena Pian], [|Jesper Sollerman] , [|Stefano Benetti] , [|Giuliano Pignata] , [|Stefano Valenti] , [|Stefano Covino] , [|Paolo D'Avanzo] , [|Daniele Malesani] , [|Enrico Cappellaro] , [|Massimo Della Valle] , [|Johan Fynbo] , [|Jens Hjorth] , [|Paolo A. Mazzali] , [|Daniel E. Reichart] , [|Rhaana L. C. Starling] , [|Massimo Turatto] , [|Susanna D. Vergani] , [|Klass Wiersema] , [|Lorenzo Amati] , [|David Bersier] , [|Sergio Campana] , [|Zach Cano] , [|Alberto J. Castro-Tirado] , [|Guido Chincarini] , [|Valerio D'Elia] , [|Antonio de Ugarte Postigo] , [|Jinsong Deng] , [|Patrizia Ferrero] , [|Alexei V. Filippenko] , [|Paolo Goldoni] , [|Javier Gorosabel] , [|Jochen Greiner] , [|Francois Hammer] , [|Pall Jakobsson] , [|Lex Kaper] , [|Koji S. Kawabata] , [|Sylvio Klose] , [|Andrew J. Levan] , [|Keiichi Maeda] , [|Nicola Masetti] , [|Bo Milvang-Jensen] , [|Felix I. Mirabel] , [|Palle Moller] , [|Kenichi Nomoto] , [|Eliana Palazzi] , [|Silvia Piranomonte] , et al. (5 additional authors not shown) Comments: 36 pages and 13 figures (one-column pre-print format), submitted to ApJ Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) [|arXiv:1111.4492] [ [|pdf], [|ps] , [|other] ] = Type-Ia supernova rates and the progenitor problem, a review = [|Dan Maoz], [|Filippo Mannucci]  Comments: invited review, to appear in PASA Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO) =21 Nov 2011:= [|arXiv:1111.4463] [ [|pdf], [|ps] , [|other] ] = Near-Infrared Properties of Type Ia Supernovae = [|M. M. Phillips]  Comments: Accepted for publication in PASA, 24 pages, 9 figures  Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO) =17 Nov 2011:= [|arXiv:1111.3648] [ [|pdf], [|ps] , [|other] ] = Pair-Instability Supernovae via Collision Runaway in Young Dense Star Clusters = [|Tony Pan], [|Abraham Loeb] , [|Daniel Kasen]  Comments: 5 pages, 4 figures  Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) =15 Nov 2011:= = [|arXiv:1111.3315] [ [|pdf] ] = = New Results from an old Friend: The Crab Nebula and its Pulsar = [|Martin C. Weisskopf]  Comments: 6 pages, 5 figures, submitted to the proceedings of the conference: "The Extreme and Variable High Energy Sky", 19-23 September 2011, Chia Laguna (Cagliari) - Italy  Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) [|arXiv:1111.3086] [ [|pdf], [|ps] , [|other] ]  High-Resolution Simulations of Convection Preceding Ignition in Type Ia Supernovae Using Adaptive Mesh Refinement [|A. Nonaka], [|A. J. Aspden] , [|M. Zingale] , [|A. S. Almgren] , [|J. B. Bell] , [|S. E. Woosley]  Comments: Accepted to ApJ. 48 pages. Some figures degraded to conserve space Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) [|arXiv:1111.3053] [ [|pdf], [|other] ]     Quark-Novae in Neutron Star-White-Dwarf Binaries: A model for dim, sub-Chandrasekhar, Type Ia Supernovae ? [|Rachid Ouyed] (1), [|Jan E. Staff] (2) ((1) Physics and Astronomy, University of Calgary, AB, Canada, (2) Physics and Astronomy, Louisiana State University, LA, USA) Comments: 4 journal pages, 1 figure Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) [|arXiv:1111.2959] [ [|pdf], [|ps] , [|other] ]      From Convection to Explosion: End-to-End Simulation of Type Ia Supernovae  [|A. Nonaka] , [|A. S. Almgren] , [|J. B. Bell] , [|H. Ma] , [|S. E. Woosley] , [|M. Zingale]   Comments: 5 pages. To appear in the Proceedings of SciDAC 2011, from the SciDAC 2011 meeting, July 2011, Denver, CO Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) [|arXiv:1111.2935] [ [|pdf], [|ps] , [|other] ]     Three-dimensional Hydrodynamic Instabilities in Stellar Core Collapses  [|Yu-Qing Lou] , [|Biao Lian]   Comments: 16 pages, MNRAS(to be published) Subjects: Solar and Stellar Astrophysics (astro-ph.SR) [|arXiv:1111.2900] [ [|pdf], [|ps] , [|other] ]    Hyperon Matter and Black Hole Formation in Failed Supernovae  [|Ken'ichiro Nakazato] , [|Shun Furusawa] , [|Kohsuke Sumiyoshi] , [|Akira Ohnishi] , [|Shoichi Yamada] , [|Hideyuki Suzuki]   Comments: 24 pages, 9 figures, accepted for publication in ApJ Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) ; Nuclear Theory (nucl-th)

=14 Nov 2011:= = [|arXiv:1111.2731] [ [|pdf], [|other] ] = = The IceCube Neutrino Observatory VI: Neutrino Oscillations, Supernova Searches, Ice Properties = The [|IceCube Collaboration]  Comments: Papers submitted by the IceCube Collaboration to the 32nd International Cosmic Ray Conference, Beijing 2011; part VI  Subjects: Instrumentation and Methods for Astrophysics (astro-ph.IM) ; High Energy Astrophysical Phenomena (astro-ph.HE) =11 Nov 2011:= [|arXiv:1111.2587] [ [|pdf], [|ps] , [|other] ] = Particle acceleration at supernova shocks in young stellar clusters = [|A. M. Bykov], [|P. E. Gladilin] , [|S. M. Osipov]  Comments: Invited talk at CRISM Montpellier conference, to be published in Memorie della Societ\`a Astronomica Italiana 2011, 6 pages  Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) [|arXiv:1111.2529] [ [|pdf], [|other] ] = Principles of supernova-driven winds = [|M. J. Stringer], [|R. G. Bower] , [|S. Cole] , [|C. S. Frenk] , [|T. Theuns]  Comments: 13 pages, 13 figures Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO) ; Galaxy Astrophysics (astro-ph.GA) = = =  [|arXiv:1111.2512] [ [|pdf], [|ps] , [|other] ]  = =Post-common-envelope binaries from SDSS. XIII: Mass dependencies of the orbital period distribution= [|M. Zorotovic], [|M. R. Schreiber] , [|B. T. Gänsicke] , [|A. Rebassa-Mansergas] , [|A. Nebot Gómez-Morán] , [|J. Southworth] , [|A. D. Schwope] , [|S. Pyrzas] , [|P. Rodríguez-Gil] , [|L. Schmidtobreick] , [|R. Schwarz] , [|C. Tappert] , [|O. Toloza] , [|N. Vogt]  Comments: Accepted for publication in A&amp;A, 4 pages, 4 figures Subjects: Solar and Stellar Astrophysics (astro-ph.SR) [|arXiv:1111.2509] [ [|pdf], [|ps] , [|other] ] The Type II supernovae 2006V and 2006au: two SN 1987A-like events [|F. Taddia], [|M. D. Stritzinger] , [|J. Sollerman] , [|M. M. Phillips] , [|J. P. Anderson] , [|M. Ergon] , [|G. Folatelli] , [|C. Fransson] , [|W. Freedman] , [|M. Hamuy] , [|N. Morrell] , [|A. Pastorello] , [|S. E. Persson] , [|S. Gonzalez]   Comments: 21 pages,15 figures, accepted for publication in A&amp;A, 25 October 2011 Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO) ; Solar and Stellar Astrophysics (astro-ph.SR) [|arXiv:1111.2497] [ [|pdf], [|ps] , [|other] ] = SN 2009E: a faint clone of SN 1987A = [|A. Pastorello], [|M. L. Pumo] , [|H. Navasardyan] , [|L. Zampieri] , [|M. Turatto] , [|J. Sollerman] , [|F. Taddia] , [|E. Kankare] , [|S. Mattila] , [|J. Nicolas] , [|E. Prosperi] , [|A. San Segundo Delgado] , [|S. Taubenberger] , [|T. Boles] , [|M. Bachini] , [|S. Benetti] , [|F. Bufano] , [|E. Cappellaro] , [|A. D. Cason] , [|G. Cetrulo] , [|M. Ergon] , [|L. Germany] , [|A. Harutyunyan] , [|S. Howerton] , [|G. M. Hurst] , [|F. Patat] , [|M. Stritzinger] , [|L.-G. Strolger] , [|W. Wells]  Comments: 19 pages, 9 figures (+7 in appendix); accepted for publication in A&amp;A on 3 November 2011  Subjects: Solar and Stellar Astrophysics (astro-ph.SR) =10 Nov 2011:= [|arXiv:1111.2152] [ [|pdf], [|ps] , [|other] ] = Galactic restrictions on iron production by various Types of supernovae = [|I.A. Acharova], [|Yu.N. Mishurov] , [|V.V. Kovtyukh]  Comments: 16 pages, 8 figures, 2 tables accepted to Mon. Not. R. Astron. Soc Subjects: Galaxy Astrophysics (astro-ph.GA) [|arXiv:1111.2117] [ [|pdf], [|ps] , [|other] ] = 2D simulations of the double-detonation model for thermonuclear transients from low-mass carbon-oxygen white dwarfs = [|S. A. Sim], [|M. Fink] , [|M. Kromer] , [|F. K. Roepke] , [|A. J. Ruiter] , [|W. Hillebrandt]  Comments: 15 pages, 8 figures. Accepted for publication by MNRAS Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) [|arXiv:1111.2051] [ [|pdf], [|ps] , [|other] ] =Two Populations of X-ray Pulsars Produced by Two Types of Supernovae= [|Christian Knigge] (1), [|Malcolm Coe] (1), [|Philipp Podsiadlowski] (2) ((1) University of Southampton, (2) University of Oxford) Comments: Nature, in press; 14 pages, 4 figures (including main paper and supplementary information) Subjects: Solar and Stellar Astrophysics (astro-ph.SR) ; Cosmology and Extragalactic Astrophysics (astro-ph.CO); Galaxy Astrophysics (astro-ph.GA); High Energy Astrophysical Phenomena (astro-ph.HE) =9 Nov 2011:= [|arXiv:1111.1969] [ [|pdf], [|ps] , [|other] ] = Supernova Simulations and Strategies For the Dark Energy Survey = [|J. P. Bernstein], [|R. Kessler] , [|S. Kuhlmann] , [|R. Biswas] , [|E. Kovacs] , [|G. Aldering] , [|I. Crane] , [|D. A. Finley] , [|J. A. Frieman] , [|T. Hufford] , [|M. J. Jarvis] , [|A. G. Kim] , [|J. Marriner] , [|P. Mukherjee] , [|R. C. Nichol] , [|P. Nugent] , [|D. Parkinson] , [|R. R. R. Reis], [|M. Sako] , [|H. Spinka] , [|M. Sullivan]  Comments: 41 pages, submitted to ApJ  Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO) [|arXiv:1111.1870] [ [|pdf], [|other] ] = Optimizing future dark energy surveys for model selection goals = [|Catherine Watkinson], [|Andrew R. Liddle] , [|Pia Mukherjee] , [|David Parkinson]  Comments: 12 pages, 16 figures Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO) [|arXiv:1111.1833] [ [|pdf], [|ps] , [|other] ] = Supernovae without host galaxies? The low surface brightness host of SN 2009Z = [|P.-C. Zinn], [|M. Stritzinger] , [|J. Braithwaite] , [|A. Gallazzi] , [|P. Grunden] , [|D. J. Bomans] , [|N. I. Morrell] , [|U. Bach]  Comments: 9 pages, 6 figures, accepted for publication in A&amp;A, abstract abridged due to arXiv requirements  Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO) =8 Nov 2011:= [|arXiv:1111.1702] [ [|pdf], [|ps] , [|other] ] = Radio observations of Supernova Remnants and the surrounding molecular gas = [|G. Dubner]  Comments: 6 pages, 2 figures. Invited review presented at the conference on Cosmic Rays and the Interstellar Medium (CRISM-2011) held in Montpellier (France), June 26- July 1. To be published in a special issue of Memorie della Societa Astronomica Italiana Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) [|arXiv:1111.1692] [ [|pdf], [|ps] , [|other] ] A comparison between star formation rate diagnostics and rate of core collapse supernovae within 11 Mpc [|M. T. Botticella], [|S. J. Smartt] , [|R. C. Kennicutt Jr.] , [|E. Cappellaro] , [|M. Sereno] , [|J. C. Lee]   Comments: accepted for publication in A&amp;A Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO) [|arXiv:1111.1503] [ [|pdf], [|ps] , [|other] ] Helium star donor channel to type Ia supernovae and their surviving companion stars  [|Bo Wang] , [|Zhanwen Han]   Comments: 4 pages, 2 figures, to appear in Proceedings of IAU Symp. 281, Binary Paths to Type Ia Supernovae Explosions, ed. R. Di Stefano and M. Orio, at Padova, Italy, July 3-8, 2011 Subjects: Solar and Stellar Astrophysics (astro-ph.SR) [|arXiv:1111.1259] [ [|pdf], [|other] ] = Smoothed Particle Hydrodynamics: Things I wish my mother taught me = [|Daniel J. Price] (Monash Centre for Astrophysics) Comments: 10 pages, 6 figures, proceedings of "Advances in Computational Astrophysics: methods, tools and outcomes", June 13-17, 2011, Cefalu, Sicily, Italy, eds. Capuzzo Dolcetta, Limongi, Tornambe &amp; Giobbi Subjects: Instrumentation and Methods for Astrophysics (astro-ph.IM) ; Cosmology and Extragalactic Astrophysics (astro-ph.CO); Galaxy Astrophysics (astro-ph.GA); Computational Physics (physics.comp-ph) =7 Nov 2011:= [|arXiv:1111.0966] [ [|pdf], [|other] ] A Compact Degenerate Primary-Star Progenitor of SN 2011fe [|Joshua S. Bloom], [|Daniel Kasen] , [|Ken J. Shen] , [|Peter E. Nugent] , [|Nathaniel R. Butler] , [|Melissa L. Graham] , [|D. Andrew Howell] , [|Ulrich Kolb] , [|Stefan Holmes] , [|Carole Haswell] , [|Vadim Burwitz] , [|Juan Rodriguez] , [|Mark Sullivan] Comments: Submitted to ApJ Letters (17 October 2011). 5 pages, 3 figures, 1 table Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) ; Cosmology and Extragalactic Astrophysics (astro-ph.CO)

=4 Nov 2011:= [|arXiv:1111.0631] [ [|pdf], [|ps] , [|other] ] = Cosmic flows in the nearby universe from Type Ia Supernovae = [|Stephen J. Turnbull], [|Michael J. Hudson] , [|Hume A. Feldman] , [|Malcolm Hicken] , [|Robert P. Kirshner] , [|Richard Watkin]  Comments: MNRAS in press, 9 pages, 4 figures, 4 tables  Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO) Peculiar velocities are one of the only probes of very large-scale mass density fluctuations in the nearby Universe. We present new "minimal variance" bulk flow measurements based upon the "First Amendment" compilation of 245 Type Ia supernovae (SNe) peculiar velocities and find a bulk flow of 249 +/- 76 km/s in the direction l= 319 +/- 18 deg, b = 7 +/- 14 deg. The SNe bulk flow is consistent with the expectations of \Lambda CDM. However, it is also marginally consistent with the bulk flow of a larger compilation of non-SNe peculiar velocities (Watkins, Feldman, & Hudson 2009). By comparing the SNe peculiar velocities to predictions of the IRAS Point Source Catalog Redshift survey (PSCz) galaxy density field, we find \Omega_{m}^{0.55} \sigma_{8,lin} = 0.40 +/- 0.07, which is in agreement with \Lambda CDM. However, we also show that the PSCz density field fails to account for 150 +/- 43 km/s of the SNe bulk motion.

[|arXiv:1111.0665] [ [|pdf], [|ps] , [|other] ] = Hydrodynamics of Core-Collapse Supernovae at the Transition to Explosion. I. Spherical Symmetry = [|Rodrigo Fernández] (IAS) Comments: Submitted to ApJ  Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) ; Solar and Stellar Astrophysics (astro-ph.SR) We study the transition to runaway expansion of an initially stalled core-collapse supernova shock. The neutrino luminosity, mass accretion rate, and neutrinospheric radius are all treated as free parameters. In spherical symmetry, this transition is mediated by a global non-adiabatic instability that develops on the advection time and reaches non-linear amplitude. Here we perform high-resolution, time-dependent hydrodynamic simulations of stalled supernova shocks with realistic microphysics to analyze this transition. We find that radial instability is a sufficient condition for runaway expansion if the neutrinospheric parameters do not vary with time and if heating by the accretion luminosity is neglected. For a given unstable mode, transition to runaway occurs when fluid in the gain region reaches positive specific energy. We find approximate instability criteria that accurately describe the behavior of the system over a wide region of parameter space. The threshold neutrino luminosities are in general different than the limiting value for a steady-state solution. We hypothesize that multidimensional explosions arise from the excitation of unstable large-scale modes of the turbulent background flow, at threshold luminosities that are lower than in the laminar case.

[|arXiv:1111.0904] [ [|pdf], [|other] ] = Progenitor's signatures in Type Ia supernova remnants = [|A. Chiotellis], [|D. Kosenko] , [|K. M. Schure] , [|J. Vink]  Comments: 4 pages, 9 figures, proceedings for IAU Symposium 281, Padova, July 2011  Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) = = =3 Nov 2011:= [|arXiv:1111.0625] [ [|pdf], [|ps] , [|other] ] = The White Dwarf Mass and the Accretion Rate of Recurrent Novae: an X-ray Perspective = [|Koji Mukai], [|Jennifer L. Sokoloski] , [|Thomas Nelson] , [|Gerardo J. M. Luna]  Comments: 4 pages, 1 figure; to be published in the proceedings of IAU Symposium 281, "Binary Paths to Type Ia Supernovae Explosions"  Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) =2 Nov 2011:= = [|arXiv:1111.0075] [ [|pdf] ] = = How Will Astronomy Archives Survive The Data Tsunami? =  [|G. Bruce Berriman], [|Steven L. Groom]   Comments: 8 pages, 3 figures; ACM Queue. Vol 9, Number 10, October 2011 ( [|this http URL] ) Subjects: Instrumentation and Methods for Astrophysics (astro-ph.IM) = [|arXiv:1111.0012] [ [|pdf], [|ps] , [|other] ]  = The Supernova Triggered Formation and Enrichment of Our Solar System [|M. Gritschneder], [|D. N. C. Lin] , [|S. D. Murray] , [|Q.-Z. Yin] , [|M.-N. Gong]   Comments: 12 pages, 8 figures, accepted for publication in ApJ. Resolution of most figures degraded to fit within arXiv size limits. A full resolution version is available at [|this http URL] Subjects: Solar and Stellar Astrophysics (astro-ph.SR) ; Earth and Planetary Astrophysics (astro-ph.EP) =1 Nov 2011:= [|arXiv:1110.6840] [ [|pdf], [|other] ] = Status of Neutrino Astronomy - a mini-review on neutrino telescopes = [|Alexander Kappes]  Comments: 6 pages, 2 figures, prepared for proceedings of EPS-HEP 2011  Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) =31 Oct 2011:= [|arXiv:1110.6420] [ [|pdf], [|ps] , [|other] ] Imaging with HST the time evolution of Eta Carinae's colliding winds [|Theodore R. Gull], [|Thomas I. Madura] , [|Jose H. Groh] , [|Michael F. Corcoran]   Comments: 10 pages, 4 figures, accepted Ap J Letters  Subjects: Solar and Stellar Astrophysics (astro-ph.SR) = [|arXiv:1110.6201] [ [|pdf], [|other] ] = Supernova 2011fe from an Exploding Carbon-Oxygen White Dwarf Star [|Peter E. Nugent], [|Mark Sullivan] , [|S. Bradley Cenko] , [|Rollin C. Thomas] , [|Daniel Kasen] , [|D. Andrew Howell] , [|David Bersier] , [|Joshua S. Bloom] , [|S. R. Kulkarni] , [|Michael T. Kandrashoff] , [|Alexei V. Filippenko] , [|Jeffrey M. Silverman] , [|Geoffrey W. Marcy] , [|Andrew W. Howard] , [|Howard T. Isaacson] , [|Kate Maguire] , [|Nao Suzuki] , [|James E. Tarlton] , [|Yen-Chen Pan] , [|Lars Bildsten] , [|Benjamin J. Fulton] , [|Jerod T. Parrent] , [|David Sand] , [|Philipp Podsiadlowski] , [|Federica B. Bianco] , [|Benjamin Dilday] , [|Melissa L. Graham] , [|Joe Lyman] , [|Phil James] , [|Mansi M. Kasliwal] , [|Nicholas M. Law] , [|Robert M. Quimby] , [|Isobel M. Hook] , [|Emma S. Walker] , [|Paolo Mazzali] , [|Elena Pian] , [|Eran O. Ofek] , [|Avishay Gal-Yam] , [|Dovi Poznanski]   Comments: 20 pages, 5 figures, 1 table, in press  Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO) ; Solar and Stellar Astrophysics (astro-ph.SR) =26 Oct 2011:= __[|arXiv:1110.5517]__ [ [|pdf], [|ps] , [|other] ] Spectroscopic Properties of Star-Forming Host Galaxies and Type Ia Supernova Hubble Residuals in a Nearly Unbiased Sample [|Chris B. D'Andrea], [|Ravi R. Gupta] , [|Masao Sako] , [|Matt Morris] , [|Robert C. Nichol] , [|Peter J. Brown] , [|Heather Campbell] , [|Matthew D. Olmstead] , [|Joshua A. Frieman] , [|Peter Garnavich] , [|Saurabh W. Jha] , [|Richard Kessler] , [|Hubert Lampeitl] , [|John Marriner] , [|Donald P. Schneider] , [|Mathew Smith]   Comments: The Astrophysical Journal (in press)  Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO) We examine the correlation between supernova host galaxy properties and their residuals on the Hubble diagram. We use supernovae discovered during the Sloan Digital Sky Survey II - Supernova Survey, and focus on objects at a redshift of z < 0.15, where the selection effects of the survey are known to yield a complete Type Ia supernova sample. To minimize the bias in our analysis with respect to measured host-galaxy properties, spectra were obtained for nearly all hosts, spanning a range in magnitude of -23 < M_r < -17. In contrast to previous works that use photometric estimates of host mass as a proxy for global metallicity, we analyze host-galaxy spectra to obtain gas-phase metallicities and star-formation rates from host galaxies with active star formation. From a final sample of ~ 40 emission-line galaxies, we find that light-curve corrected Type Ia supernovae are ~ 0.1 magnitudes brighter in high-metallicity hosts than in low-metallicity hosts. We also find a significant (> 3{\sigma}) correlation between the Hubble residuals of Type Ia supernovae and the specific star-formation rate of the host galaxy. We comment on the importance of supernova/host-galaxy correlations as a source of systematic bias in future deep supernova surveys.

__[|arXiv:1110.5602]__ [ [|pdf] ] X-ray Properties of Young Early Type Galaxies: II. Abundance Ratio in the Hot ISM [|Dong-Woo Kim], [|Giuseppina Fabbiano] , [|Antonio Pipino]   Comments: 19 pages, 3 color figures, submitted to ApJ  Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO) Using Chandra X-ray observations of young, post-merger elliptical galaxies, we present X-ray characteristics of age-related observational results, by comparing with typical old elliptical galaxies in terms of metal abundances in the hot interstellar matter (ISM). While the absolute element abundances may be uncertain because of unknown systematic errors and partly because of the smaller amount of hot gas in young ellipticals, the relative abundance ratios (e.g., the alpha-element to Fe ratio, most importantly Si/Fe ratio) can be relatively well constrained. We find that in two young elliptical galaxies (NGC 720 and NGC 3923) the Si to Fe abundance ratio is super-solar (at a 99% significance level), in contrast to typical old elliptical galaxies where the Si to Fe abundance ratio is close to solar. Also the O/Mg ratio is close to solar in the two young elliptical galaxies, as opposed to the sub-solar O/Mg ratio reported in old elliptical galaxies. Both features appear to be less significant outside the effective radius (roughly 30" for the galaxies under study), consistent with the observations that confine to the centermost regions the signatures of recent star formation in elliptical galaxies. Observed differences between young and old elliptical galaxies can be explained by the additional contribution from SNe II ejecta in the former. In young elliptical galaxies, the later star formation associated with recent mergers would have a dual effect, resulting both in galaxy scale winds - and therefore smaller observed amounts of hot ISM - because of the additional SNII heating, and in different metal abundances, because of the additional SNII yields.

[|arXiv:1110.5618] [ [|pdf], [|ps] , [|other] ] Evidence for a compact Wolf-Rayet progenitor for the Type Ic supernova PTF 10vgv [|A. Corsi], [|E. O. Ofek] , [|A. Gal-Yam] , [|D. A. Frail] , [|D. Poznanski] , [|P. A. Mazzali] , [|S. R. Kulkarni] , [|M. M. Kasliwal] , [|I. Arcavi] , [|S. Ben-Ami] , [|S. B. Cenko] , [|A. V. Filippenko] , [|D. B. Fox] , [|A. Horesh] , [|J. L. Howell] , [|I. K. W. Kleiser] , [|E. Nakar] , [|I. Rabinak] , [|R. Sari] , [|J. M. Silverman] , [|D. Xu] , [|J. S. Bloom] , [|N. M. Law] , [|P. Nugent] , [|R. M. Quimby]   Comments: 16 pages; 3 figures  Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO) We present the discovery of PTF 10vgv, a Type Ic supernova detected by the Palomar Transient Factory, using the Palomar 48-inch telescope (P48). R-band observations of the PTF 10vgv field with P48 probe the supernova emission from its very early phases (about two weeks before R-band maximum), and set limits on its flux in the week prior to the discovery. Our sensitive upper limits and early detections constrain the post-shock-breakout luminosity of this event. Via comparison to numerical (analytical) models, we derive an upper-limit of R \lesssim 4.5 Rsun (R \lesssim 1 Rsun) on the radius of the progenitor star, a direct indication in favor of a compact Wolf-Rayet star. Applying a similar analysis to the historical observations of SN 1994I, yields R \lesssim 1/4 Rsun for the progenitor radius of this supernova.

=25 Oct 2011:= __[|arXiv:1110.5311]__ [ [|pdf], [|ps] , [|other] ] = VLBI observations of SN2011dh: imaging of the youngest radio supernova = [|I. Marti-Vidal], [|V. Tudose] , [|Z. Paragi] , [|J. Yang] , [|J. M. Marcaide] , [|J. C. Guirado] , [|E. Ros] , [|A. Alberdi] , [|M. A. Perez-Torres] , [|M. K. Argo] , [|A. J. van der Horst] , [|M. A. Garrett] , [|C. J. Stockdale] , [|K. W. Weiler]  Comments: Letter. Accepted in A&amp;A Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) ; Cosmology and Extragalactic Astrophysics (astro-ph.CO) [|arXiv:1110.4948] [ [|pdf], [|ps] , [|other] ] = Evolution of Supernova Remnants Expanding out of the Dense Circumstellar Matter into the Rarefied Interstellar Medium = [|Takafumi Shimizu], [|Kuniaki Masai] , [|Katsuji Koyama]  Comments: 8 pages, 9 figures, accepted for publication in PASJ Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) [|arXiv:1110.4924] [ [|pdf], [|other] ] = Freeze-out yields of radioactivities in core-collapse supernovae = [|Georgios Magkotsios], [|F. X. Timmes] , [|Michael Wiescher]  Comments: 16 pages (published version), 11 figures Journal-ref: ApJ 741 78 (2011) Subjects: Solar and Stellar Astrophysics (astro-ph.SR)

=20 Oct 2011:= [|arXiv:1110.4109] [ [|pdf], [|ps] , [|other] ] The Fast Evolution of SN 2010bh associated with XRF 100316D [|Felipe Olivares E.], [|Jochen Greiner] , [|Patricia Schady] , [|Arne Rau] , [|Sylvio Klose] , [|Thomas Krühler] , [|Paulo M. J. Afonso] , [|Adria C. Updike] , [|Marco Nardini] , [|Robert Filgas] , [|Ana Nicuesa Guelbenzu] , [|Christian Clemens] , [|Jonny Elliott] , [|D. Alexander Kann] , [|Andrea Rossi] , [|Vladimir Sudilovsky]   Comments: 15 pages, 7 figures, A&amp;A submitted  Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) ; Cosmology and Extragalactic Astrophysics (astro-ph.CO) About a decade ago the first observational evidence of the connection between supernovae and gamma-ray bursts was found. Since then, only half a dozen spectroscopically confirmed associations have been discovered and XRF 100316D/SN 2010bh lies among the latest. Starting observations at 12 hr and continuing until 80 days after the burst, GROND provided excellent photometric data of XRF 100316D/SN 2010bh in six filter bands from the optical to the near-infrared, significantly expanding the existing data set for this event. Combining GROND and Swift/UVOT+XRT data, the early SED is modelled with a blackbody and afterglow component attenuated by dust and gas absorption. The best-fit models imply a moderate host-galaxy extinction (A_V=1.2\pm0.1 mag). Furthermore, temperature and radius evolution of the thermal component are combined with earlier measurements available from the literature. The analysis reveals a cooling envelope at an apparent initial radius of 7\times10^11 cm, compatible with a dense wind surrounding a Wolf-Rayet star. Templates of SN 1998bw are fitted to the light curve in the SN phase. The multicolour comparison shows that SN 2010bh is ~65% as bright as SN 1998bw. It proves to be the most rapidly evolving GRB-SNe to date, reaching maximum brightness at ~8 days after the burst in the blue bands. Finally, a two-component model is fitted to the quasi-bolometric light curve, which delivers M_Ni=0.21\pm0.03M\bigodot and M_ej=2.6\pm0.2M\bigodot, typical values within the GRB-SN population. The kinetic energy is (2.4\pm0.7)\times10^52 erg, making this SN the second most energetic GRB-SN after SN1998bw. SN 2010bh shows one of the earliest peaks ever recorded and thereafter fades more rapidly than other comparable SNe. This hints at a possibly thin envelope that is expanding at very high velocities and, therefore, unable to retain the {\gamma}-rays that would prolong the duration of the SN event. = =  [|arXiv:1110.4192] [ [|pdf], [|ps] , [|other] ] Estimating the binary fraction of planetary nebulae central stars [|D. Douchin], [|O. De Marco] , [|D.J. Frew] , [|G. H. Jacoby] , [|J.-C. Passy] , [|T. Hillwig] , [|S. B. Howell] , [|H. Bond] , [|A. Peyaud] , [|A. Zijlstra] , [|R. Napiwotzki] , [|G. Jasniewicz] , [|Q. Parker]   Subjects: Solar and Stellar Astrophysics (astro-ph.SR) During the past 20 years, the idea that non-spherical planetary nebulae might need a binary or planetary interaction to be shaped was discussed by various authors. It is now generally agreed that the varied morphologies of planetary nebulae cannot be fully explained solely by single star evolution. Observationally, more binary central stars of planetary nebulae have been discovered, opening new possibilities to understand the connections between binarity and morphology. So far, \simeq45 binary central stars of planetary nebulae have been detected, most being close systems detected via flux variability. In order to determine the PN binary fraction, one needs a method that can detect wider binaries. We present here recent results concentrating on binary infrared excess observations aimed at detecting binaries of any separation.

[|arXiv:1110.4267] [ [|pdf], [|other] ] Is there a hidden hole in Type Ia supernova remnants? [|Domingo García-Senz], [|Carles Badenes] , [|Nuria Serichol]  Comments: 48 pages, 17 figures; Accepted for publication in ApJ  Subjects: Solar and Stellar Astrophysics (astro-ph.SR) In this paper we report on the bulk features of the hole carved by the companion star in the material ejected during a Type Ia supernova explosion. In particular we are interested in the long term evolution of the hole as well as in its fingerprint in the geometry of the supernova remnant after several centuries of evolution, which is a hot topic in current Type Iasupernovae studies. We use an axisymmetric smoothed particle hydrodynamics code to characterize the geometric properties of the supernova remnant resulting from the interaction of this ejected material with the ambient medium. Our aim is to use supernova remnant observations to constrain the single degenerate scenario for Type Ia supernova progenitors. Our simulations show that the hole will remain open during centuries, although its partial or total closure at later times due to hydrodynamic instabilities is not excluded. Close to the edge of the hole, the Rayleigh-Taylor instability grows faster, leading to plumes that approach the edge of the forward shock. We also discuss other geometrical properties of the simulations, like the evolution of the contact discontinuity.

=19 Oct 2011:= = [|arXiv:1110.3789] [ [|pdf], [|ps] , [|other] ] = = Unburned Material in the Ejecta of Type Ia Supernovae = [|Gastón Folatelli], [|M. M. Phillips] , [|Nidia Morrell] , [|Masaomi Tanaka] , [|Keiichi Maeda] , [|Ken'ichi Nomoto] , [|Maximilian Stritzinger] , [|Christopher R. Burns] , [|Mario Hamuy] , [|Paolo Mazzali] , [|Luis Boldt] , [|Abdo Campillay] , [|Carlos Contreras] , [|Sergio Gonzalez] , [|Miguel Roth] , [|Francisco Salgado] , [|W. L. Freedman] , [|Barry F. Madore] , [|S. E. Persson] , [|Nicholas B. Suntzeff]  Comments: Submitted to ApJ on June 20, 2011. 19 pages, 19 figures, 4 tables. Minor changes applied after second referee report Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO) (Abridged) The presence of unburned material in the ejecta of normal Type Ia supernovae (SNeIa) is investigated using early-time spectroscopy obtained by the CSP. The tell-tale signature of pristine material from a C+O white dwarf progenitor star is the presence of carbon. The most prominent carbon lines in optical spectra of SNeIa are due to C II. We find that at least 30% of the objects in the sample show an absorption at ~6300 AA which is attributed to C II 6580. An association to H_alpha is considered to be unlikely. These findings imply a larger incidence of carbon in SNeIa ejecta than previously noted. We show how observational biases and physical conditions may hide these C II lines, and account for the scarcity of previous carbon detections. This relatively large frequency of carbon detections has crucial implications on our understanding of the explosive process. The observations indicate that carbon is present merely ~1000 km s^-1 above the bulk of Si II. Spectral modeling shows the detections are consistent with a mass of carbon of 10^-3--10^-2 M_sun. This would imply substantial mixing, which may be related to asymmetries of the flame propagation or clumps of unburned material along the line of sight. However, the uniformity of the relation between C II and Si II velocities is not consistent with the latter scenario. The observational properties of SNeIa with and without carbon signatures are compared. A trend toward bluer color and lower luminosity is found for objects with carbon.

[|arXiv:1110.3807] [ [|pdf], [|ps] , [|other] ] = Diversity of Luminous Supernovae from Non-Steady Mass Loss = [|Takashi J. Moriya], [|Nozomu Tominaga]  Comments: 8 pages, 4 figures, submitted to The Astrophysical Journal, comments welcome  Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) We show that the diversity in the density slope of the dense wind due to non-steady mass loss can be one way to explain the spectral diversity of Type II luminous supernovae (LSNe). The interaction of SN ejecta and wind surrounding it is considered to be a power source to illuminate LSNe, because many LSNe show the wind signature in their spectra (Type IIn LSNe). However, there also exist LSNe without the spectral features caused by the wind (Type IIL LSNe). We show that, even if LSNe are illuminated by the interaction, it is possible that they do not show the narrow spectra from the wind due to the non-steady mass loss of their progenitors. When the shock breakout occurs in the dense wind with the density structure {\rho} \propto r^{-w}, the ratio of the diffusion timescale in the optically thick region of the wind (td) and the shock propagation timescale of the entire wind (ts) after the shock breakout strongly depends on w. For the case w <\sim 1, both timescales are comparable (td/ts \simeq 1) and td/ts gets smaller as w gets larger. For the case td/ts \simeq 1, the shock goes through the entire wind just after the light curve (LC) peak and narrow spectral lines from the wind cannot be observed after the LC peak (Type IIL LSNe). If td/ts is much smaller, the shock wave continues to propagate in the wind after the LC peak and unshocked wind remains (Type IIn LSNe). This difference can only obtained through a careful treatment of the shock breakout condition in a dense wind. The lack of narrow Lorentzian line profiles in Type IIL LSNe before the LC peak can also be explained by the difference in the density slope. Furthermore, we apply our model to Type IIn LSN 2006gy and Type IIL LSN 2008es and find that our model is consistent with the observations. = = =14 Oct 2011:= [|arXiv:1110.2783] [ [|pdf], [|ps] , [|other] ] = Discovery of Variability of the Progenitor of SN 2011dh in M51 Using the Large Binocular Telescope = [|D. M. Szczygieł], [|J. R. Gerke] , [|C. S. Kochanek] , [|K. Z. Stanek]  Comments: 17 pages, 5 figures, submitted to ApJ  Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO) ; Solar and Stellar Astrophysics (astro-ph.SR) We show that the candidate progenitor of the core-collapse SN 2011dh in M51 (8 Mpc away) was fading by 0.039 +- 0.006 mag/year during the three years prior to the supernova, and that this level of variability is moderately unusual for other similar stars in M 51. While there are uncertainties about whether the true progenitor was a blue companion to this candidate, the result illustrates that there are no technical challenges to obtaining fairly high precision light curves of supernova progenitors using ground based observations of nearby (<10 Mpc) galaxies with wide field cameras on 8m-class telescopes. While other sources of variability may dominate, it is even possible to reach into the range of evolution rates required by the quasi-static evolution of the stellar envelope. For M 81, where we have many more epochs and a slightly longer time baseline, our formal 3 sigma sensitivity to slow changes is presently 3 millimag/year for a M_V ~= -8 mag star. In short, there is no observational barrier to determining whether the variability properties of stars in their last phases of evolution (post Carbon ignition) are different from earlier phases. = = =13 Oct 2011:=

[|arXiv:1110.2506] [ [|pdf], [|ps] , [|other] ] = On the Nature of the Progenitor of the Type Ia SN2011fe in M101 = [|Jifeng Liu], __[|Rosanne Di Stefano]__, [|Tao Wang] , [|Maxwell Moe]  Comments: 14 pages, 3 figures, 2 tables, submitted to ApJ Letters  Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) ; Cosmology and Extragalactic Astrophysics (astro-ph.CO) The explosion of a Type Ia supernova, SN 2011ef, in the nearby Pinwheel galaxy (M101 at 6.4 Mpc) provides an opportunity to study pre-explosion images and search for the progenitor, which should consist of a white dwarf (WD), possibly surrounded by an accretion disk, in orbit with another star. We report on our use of deep Chandra observations to limit the luminosity and temperature of the pre-explosion white dwarf (WD). It is found that if the spectrum was a blackbody, then WDs of highest possible temperatures and luminosities are excluded but, even if the WD was emitting at the Eddington luminosity, values of kT less than roughly 60 eV are permitted. This allows the progenitor to be an accreting nuclear-burning WD with an expanded photosphere. Pre-SN HST observations were used to derive a lower limit of about 10 eV for the expanded photosphere. Li et al.\, (2011) have already ruled out the possibility of a giant donor. We consider the combined emission from the WD, disk, and donor, and find that even the combined emission from a bright subgiant, WD and disk would not likely have been observed prior to explosion, and neither would some local candidates for the nuclear-burning WD model.

__[|arXiv:1110.2538]__ [ [|pdf], [|ps] , [|other] ] = A Swift Look at SN 2011fe: The Earliest Ultraviolet Observations of a Type Ia Supernova = [|Peter J. Brown], [|Kyle S. Dawson] , [|Massimiliano de Pasquale] , [|Caryl Gronwall] , [|Stephen Holland] , [|Stefan Immler] , [|Paul Kuin] , [|Paolo Mazzali] , [|Peter Milne] , [|Samantha Oates] , [|Michael Siegel]  Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO) We present the earliest ultraviolet (UV) observations of the bright Type Ia supernova SN 2011fe/PTF11kly in the nearby galaxy M101 at a distance of only 6.4 Mpc. It was discovered shortly after explosion by the Palomar Transient Factory and first observed by Swift/UVOT about a day after explosion. The early UV light is well-defined, with ~20 data points per filter in the 5 days after explosion. With these early UV observations, we extend the near-UV template of SNe Ia to earlier times for comparison with observations at low and high redshift and report fits from semi-empirical models of the explosion. We find the early UV count rates to be well fit by the superposition of two parabolic curves. Finally, we use the early UV flux measurements to examine a possible shock interaction with a non-degenerate companion. We find that even a solar mass companion at a distance of a few solar radii is unlikely at more than 95% confidence. = = =30 Sep - 12 Oct 2011:=

__[|arXiv:1110.2361]__ [ [|pdf], [|ps] , [|other] ] = Symbiotic stars: Observations confront theory = [|J. Mikołajewska]  Comments: 8 pages, 3 figures; to appear in the proceedings of the Asiago Workshop on Symbiotic Stars, A. Siviero and U. Munari eds., Baltic Astronomy special issue  Subjects: Solar and Stellar Astrophysics (astro-ph.SR) [|arXiv:1110.1958] [ [|pdf] ] = The key role of the Calan/Tololo project in the discovery of the accelerating Universe = [|Mario Hamuy]  Comments: 3 pages, no figures  Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO) [|arXiv:1110.2363] [ [|pdf], [|ps] , [|other] ] = SN 2010ay is a Luminous and Broad-lined Type Ic Supernova within a Low-metallicity Host Galaxy = [|Nathan E. Sanders] (1), [|A. M. Soderberg] (1), [|S. Valenti] (2), [|L. Chomiuk] (1,3), [|E. Berger] (1), [|S. Smartt] (2), [|K. Hurley] (4), [|S. D. Barthelmy] (5), [|R. Chornock] (1), [|R. J. Foley] (1), [|E. M. Levesque] (6), [|G. Narayan] (7), [|R. P. Kirshner] (1), [|M.T. Botticella] (2), [|M. S. Briggs] (8), [|V. Connaughton] (8), [|Y. Terada] (9), [|N. Gehrels] (5), [|S. Golenetskii] (10), [|E. Mazets] (10), [|T. Cline] (11), [|A. von Kienlin] (12), [|W. Boynton] (13), [|K. C. Chambers] (14), [|T. Grav] (15), [|J. N. Heasley] (14), [|K. W. Hodapp] (14), [|R. Jedicke] (14), [|N. Kaiser] (14), [|R.-P. Kudritzki] (14), [|G. A. Luppino] (14), [|R. H. Lupton] (16), [|E. A. Magnier] (14), [|D. G. Monet] (17), [|J. S. Morgan] (14), [|P. M. Onaka] (14), [|P. A. Price] (14), [|C. W. Stubbs] (7), [|J. L. Tonry] (14), [|R. J. Wainscoat] (14), [|M. F. Waterson] (18) ((1) Harvard-Smithsonian Center for Astrophysics, (2) Queens University, (3) National Radio Astronomy Observatory, (4) University of California Berkeley, (5) NASA Goddard Space Flight Center, (6) University of Colorado, (7) Department of Physics, Harvard University, (8) CSPAR, University of Alabama in Huntsville, (9) Saitama University, (10) Ioffe Physico-Technical Institute, (11) Emeritus, NASA Goddard Space Flight Center, (12) Max-Planck Institut fur extraterrestrische Physik, Garching, (13) Lunar and Planetary Laboratory, University of Arizona, (14) Institute for Astronomy, University of Hawaii, (15) Johns Hopkins University, Baltimore, MD, USA, (16) Princeton University, (17) US Naval Observatory, Flagstaff Station, (18) The University of Western Australia) Comments: 18 pages, 10 figures, more information available at [|this https URL]   Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) __[|arXiv:1110.1949]__ [ [|pdf], [|ps] , [|other] ] =Type Ia supernovae and the ^{12}C+^{12}C reaction rate= [|E. Bravo], [|L. Piersanti] , [|I. Domínguez] , [|O. Straniero] , [|J. Isern] , [|J.A. Escartín]  Comments: 15 pages, 6 tables, 10 figures, accepted for Astronomy and Astrophysics  Subjects: Solar and Stellar Astrophysics (astro-ph.SR) ; Nuclear Experiment (nucl-ex)

[|arXiv:1110.1856] [ [|pdf], [|ps] , [|other] ] = Type Ia supernovae and the DD scenario = [|J. Isern], [|E. García-Berro] , [|P. Lorén-Aguilar]  Comments: Proceedings of the 2010 Cefalu meeting "Advances in Computational Astrophysics: methods, tools and outcomes"  Subjects: High Energy Astrophysical Phenomena (astro-ph.HE)

[|arXiv:1110.1827] [ [|pdf], [|other] ] = Missing Black Holes Unveil The Supernova Explosion Mechanism = [|K. Belczynski], [|G. Wiktorowicz] , [|C. Fryer] , [|D. Holz] , [|V. Kalogera]  Comments: 6 pages, comments welcomed  Subjects: Galaxy Astrophysics (astro-ph.GA)

[|arXiv:1110.1632] [ [|pdf], [|ps] , [|other] ] = The Multi-Epoch Nearby Cluster Survey: type Ia supernova rate measurement in z~0.1 clusters and the late-time delay time distribution = [|David J. Sand], [|Melissa L. Graham] , [|Chris Bildfell] , [|Dennis Zaritsky] , [|Chris Pritchet] , [|Henk Hoekstra] , [|Dennis W. Just] , [|Stéphane Herbert-Fort] , [|Suresh Sivanandam] , [|Ryan Foley] , [|Andisheh Mahdavi]  Comments: 35 pages, 14 figures, submitted to ApJ (comments welcome)  Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO)

[|arXiv:1110.1377] [ [|pdf], [|ps] , [|other] ] = Core-Collapse Supernovae and Host Galaxy Stellar Populations = [|Patrick L. Kelly] (Stanford), [|Robert P. Kirshner] (CfA) Comments: Comments welcome, submitted to ApJ  Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO)

__[|arXiv:1110.0480]__ [ [|pdf], [|ps] , [|other] ] = A study of the color diversity around maximum light in Type Ia supernovae = [|Regis Cartier] (1 and 2), [|Francisco Forster] (1), [|Paolo Coppi] (2), [|Mario Hamuy] (1), [|Keiichi Maeda] (3), [|Giuliano Pignata] (4), [|Gaston Folatelli] (3). ((1) U. de Chile, (2) Yale, (3) IPMU, (4) U. Andres Bello) Comments: Accepted for publication in A&amp;A letters  Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO)

[|arXiv:1110.0361] [ [|pdf], [|ps] , [|other] ] = Particle Spectra from Acceleration at Forward and Reverse Shocks of Young Type Ia Supernova Remnants = [|Igor Telezhinsky], [|Vikram Dwarkadas] , [|Martin Pohl]  Comments: Accepted in Astroparticle Physics  Subjects: High Energy Astrophysical Phenomena (astro-ph.HE)

[|arXiv:1110.0318] [ [|pdf], [|ps] , [|other] ] = Nucleosynthesis of r-Process Elements by Jittering Jets in Core-Collapse Supernovae = [|Oded Papish], [|Noam Soker]  Comments: Submitted  Subjects: High Energy Astrophysical Phenomena (astro-ph.HE)

[|arXiv:1110.0055] [ [|pdf], [|ps] , [|other] ] = Novae and accreting white dwarfs as progenitors of Type Ia supernovae = [|Mariko Kato]  Comments: 9 pages, Binary Paths to the Explosions of Type Ia Supernovae, Proceedings IAU symp. 281 Subjects: Solar and Stellar Astrophysics (astro-ph.SR)

[|arXiv:1110.0022] [ [|pdf], [|ps] , [|other] ] = Upper limits on bolometric luminosities of ten type Ia supernova progenitors from Chandra observations = [|Mikkel T.B. Nielsen], [|Rasmus Voss] , [|Gijs Nelemans]  Comments: Submitted to MNRAS. 9 pages, 11 figures, 3 tables Subjects: Solar and Stellar Astrophysics (astro-ph.SR) = = =30 Sep 2011:= = [|arXiv:1109.6339] [ [|pdf], [|ps] , [|other] ] = = SDSS J163030.58+423305.8: A 40 minute Orbital Period Detached White Dwarf Binary = [|Mukremin Kilic], [|Warren R. Brown] , [|J. J. Hermes] , [|Carlos Allende Prieto] , [|S. J. Kenyon] , [|D. E. Winget] , [|K. I. Winget]  Comments: MNRAS Letters, in press  Subjects: Galaxy Astrophysics (astro-ph.GA) We report the discovery of a new detached, double white dwarf system with an orbital period of 39.8 min. We targeted SDSS J163030.58+423305.8 (hereafter J1630) as part of our radial velocity program to search for companions around low-mass white dwarfs using the 6.5m MMT. We detect peak-to-peak radial velocity variations of 576 km/s. The mass function and optical photometry rule out main-sequence companions. In addition, no milli-second pulsar companions are detected in radio observations. Thus the invisible companion is most likely another white dwarf. Unlike the other 39 min binary SDSS J010657.39-100003.3, follow-up high speed photometric observations of J1630 obtained at the McDonald 2.1m telescope do not show significant ellipsoidal variations, indicating a higher primary mass and smaller radius. The absence of eclipses constrain the inclination angle to <82deg. J1630 contains a pair of white dwarfs, 0.3 Msun primary + >0.3 Msun invisible secondary, at a separation of >0.32 Rsun. The two white dwarfs will merge in less than 31 Myr. Depending on the core composition of the companion, the merger will form either a single core-He burning subdwarf star or a rapidly rotating massive white dwarf. The gravitational wave strain from J1630 is detectable by instruments like the Laser Interferometer Space Antenna (LISA) within the first year of operation.

[|arXiv:1109.6351] [ [|pdf], [|ps] , [|other] ] = Near-IR search for lensed supernovae behind galaxy clusters: III. Implications for cluster modeling and cosmology = [|Teresa Riehm], [|Edvard Mörtsell] , [|Ariel Goobar] , [|Rahman Amanullah] , [|Tomas Dahlén] , [|Jakob Jönsson] , [|Marceau Limousin] , [|Kerstin Paech] , [|Johan Richard]  Comments: 10 pages, 8 figures, 3 tables. Accepted for publication in A&amp;A Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO) Massive galaxy clusters at intermediate redshifts act as gravitational lenses that can magnify supernovae (SNe) occurring in background galaxies. We assess the possibility to use lensed SNe to put constraints on the mass models of galaxy clusters and the Hubble parameter at high redshift. Due to the standard candle nature of Type Ia supernovae (SNe Ia), observational information on the lensing magnification from an intervening galaxy cluster can be used to constrain the model for the cluster mass distribution. A statistical analysis using parametric cluster models was performed to investigate the possible improvements from lensed SNe Ia for the accurately modeled galaxy cluster A1689 and the less well constrained cluster A2204. Time delay measurements obtained from SNe lensed by accurately modeled galaxy clusters can be used to measure the Hubble parameter. For a survey of A1689 we estimate the expected rate of detectable SNe Ia and of multiply imaged SNe. The velocity dispersion and core radius of the main cluster potential show strong correlations with the predicted magnifications and can therefore be constrained by observations of SNe Ia in background galaxies. This technique proves especially powerful for galaxy clusters with only few known multiple image systems. The main uncertainty for measurements of the Hubble parameter from the time delay of strongly lensed SNe is due to cluster model uncertainties. For the extremely well modeled cluster A1689, a single time delay measurement could be used to determine the Hubble parameter with a precision of ~ 10%. We conclude that observations of SNe Ia behind galaxy clusters can be used to improve the mass modeling of the large scale component of galaxy clusters and thus the distribution of dark matter. Time delays from SNe strongly lensed by accurately modeled galaxy clusters can be used to measure the Hubble constant at high redshifts.

[|arXiv:1109.6518] [ [|pdf], [|ps] , [|other] ] = The long term optical behaviour of helium accreting AM CVn binaries = [|Gavin Ramsay] (1), [|Thomas Barclay] (1,2), [|Danny Steeghs] (3), [|Peter J. Wheatley] (3), [|Pasi Hakala] (4), [|Iwona Kotko] (5), [|Simon Rosen] (6), ((1) Armagh Observatory, (2) MSSL/UCL, (3) Univ Warwick, (4) FINCA, (5) Jagiellonian University, (6) Univ Leicester) Comments: Accepted for publication in MNRAS  Subjects: Galaxy Astrophysics (astro-ph.GA) ; Solar and Stellar Astrophysics (astro-ph.SR) We present the results of a two and a half year optical photometric monitoring programme covering 16 AM CVn binaries using the Liverpool Telescope on La Palma. We detected outbursts in seven systems, one of which (SDSS J0129) was seen in outburst for the first time. Our study coupled with existing data shows that ~1/3 of these helium-rich accreting compact binaries show outbursts. The orbital period of the outbursting systems lie in the range 24-44 mins and is remarkably consistent with disk-instability predictions. The characteristics of the outbursts seem to be broadly correlated with their orbital period (and hence mass transfer rate). Systems which have short periods (<30 min) tend to exhibit outbursts lasting 1--2 weeks and often show a distinct `dip' in flux shortly after the on-set of the burst. We explore the nature of these dips which are also seen in the near-UV. The longer period bursters show higher amplitude events (5 mag) that can last several months. We have made simulations to estimate how many outbursts we are likely to have missed.

=29 Sep 2011:= = [|arXiv:1109.6171] [ [|pdf], [|ps] , [|other] ] = = Rotating massive stars through the ages, with applications to WR stars, Pop III stars and Gamma Ray Bursts = [|Andre Maeder], __[|Georges Meynet]__ Comments: 55 pages, 33 figures, 2 tables, accepted for publication in Review of Modern Physics  Subjects: Solar and Stellar Astrophysics (astro-ph.SR) This article first reviews the basic physics of rotating stars and their evolution. We examine in particular the changes of the mechanical and thermal equilibrium of rotating stars. An important (predicted and observed) effect is that rotating stars are hotter at the poles and cooler at the equator. We briefly discuss the mass loss by stellar winds, which are influenced by the anisotropic temperature distribution. These anisotropies in the interior are also driving circulation currents, which transports the chemical elements and the angular momentum in stars. Internal differential rotation, if present, creates instabilities and mixing, in particular the shear mixing, the horizontal turbulence and their interactions. A major check of the model predictions concerns the changes of the surface abundances, which are modified by mass loss in the very massive stars and by rotational mixing in O- and B-type stars. We show that the observations confirm the existence of rotational mixing, with much larger effects at lower metallicities. We discuss the predictions of stellar models concerning the evolution of the surface velocities, the evolutionary tracks in the HR diagram and lifetimes, the populations of blue, red supergiants and Wolf-Rayet stars, and the progenitors of type Ibc supernovae. We show, that in many aspects, rotating models provide a much better fit than non-rotating ones. Using the same physical ingredients as those which fit the best the observations of stars at near solar metallicities, we explore the consequences of rotating models for the status of Be stars, the progenitors of Gamma Ray Bursts, the evolution of Pop III stars and of very metal poor stars, the early chemical evolution of galaxies, the origin of the C-enhanced Metal Poor stars (CEMP) and of the chemical anomalies in globular clusters. = = =28 Sep 2011:= __[|arXiv:1109.5873]__ [ [|pdf], [|ps] , [|other] ] = Measuring Expansion Velocities in Type II-P Supernovae = [|K. Takats], [|J. Vinko]  Comments: 19 pages, 10 figures, accepted in MNRAS  Subjects: Solar and Stellar Astrophysics (astro-ph.SR)

__[|arXiv:1109.5866]__ [ [|pdf], [|ps] , [|other] ] = Obscuring Supersoft X-ray Sources in Stellar Winds = [|Mikkel Thomas Bøje Nielsen], [|Carsten Dominik] , [|Gijs Nelemans]  Comments: Conference proceedings for IAU Symposium no. 281 "Binary Paths to Type Ia Supernova Explosions", 5-10 July 2011, Padova, Italy  Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) __[|arXiv:1109.5799]__ [ [|pdf], [|ps] , [|other] ] = Connecting Recurrent Novae to [some] Type Ia Supernovae = [|Ferdinando Patat] Comments: 8 pages, 1 figure. Invited review at "Binary Paths to Type Ia Supernovae", IAU Symposium n.281, R. Di Stefano &amp; M. Orio Eds., Cambridge University Press Subjects: Solar and Stellar Astrophysics (astro-ph.SR) ; Cosmology and Extragalactic Astrophysics (astro-ph.CO) __[|arXiv:1109.5757]__ [ [|pdf], [|ps] , [|other] ] = The Rise-Time of Normal and Subluminous Type Ia Supernovae = [|S. Gonzalez-Gaitan], [|A. Conley] , [|F. B. Bianco] , [|D. A. Howell] , [|M. Sullivan] , [|K. Perrett] , [|R. Carlberg] , [|P. Astier] , [|D. Balam] , [|C. Balland] , [|S. Basa] , [|D. Fouchez] , [|N. Fourmanoit] , [|M. L. Graham] , [|J. Guy] , [|D. Hardin] , [|I. M. Hook] , [|C. Lidman] , [|R. Pain] , [|N. Palanque-Delabrouille] , [|C. J. Pritchet] , [|N. Regnault] , [|J. Rich] , [|V. Ruhlmann-Kleider]  Comments: 13 pages, 13 figures Subjects: Galaxy Astrophysics (astro-ph.GA) =27 Sep 2011:= __[|arXiv:1109.5502]__ [ [|pdf], [|ps] , [|other] ] = On the Mass-Loss Rates of Massive Stars in the Low-Metallicity Galaxies IC 1613, WLM and NGC 3109 = [|F. Tramper], [|H. Sana] , [|A. de Koter] , [|L. Kaper]  Comments: 9 pages, 3 figures; accepted for publication in The Astrophysical Journal Letters Subjects: Solar and Stellar Astrophysics (astro-ph.SR) = =  [|arXiv:1109.5406] [ [|pdf], [|ps] , [|other] ] = A Spectropolarimetric Comparison of the Type II-Plateau Supernovae SN 2008bk and SN 2004dj = [|Douglas C. Leonard] (San Diego State University), [|Luc Dessart] (Marseille), [|D. John Hillier] (U. Pittsburgh), [|Giuliano Pignata] (Univ. Andres Bello, Chile) Comments: 4 pages, 1 figure, to appear in AIP conference proceedings: Stellar Polarimetry, From Birth to Death, eds. J. Hoffman, B. Whitney, and J. Bjorkman Subjects: Solar and Stellar Astrophysics (astro-ph.SR) =25 Sep 2011:= = [|arXiv:1109.5177] [ [|pdf], [|ps] , [|other] ] = = The merger of binary white dwarf--neutron stars: Simulations in full general relativity = [|Vasileios Paschalidis], [|Yuk Tung Liu] , [|Zachariah Etienne] , [|Stuart L. Shapiro]  Comments: 23 pages, 9 figures, 3 tables, submitted to PRD  Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) ; Solar and Stellar Astrophysics (astro-ph.SR) We present fully general relativistic (GR) simulations of binary white dwarf-neutron star (WDNS) inspiral and merger. The initial binary is in a circular orbit at the Roche critical separation. The goal is to determine the ultimate fate of such systems. We focus on binaries whose total mass exceeds the maximum mass (Mmax) a cold, degenerate EOS can support against gravitational collapse. The time and length scales span many orders of magnitude, making fully general relativistic hydrodynamic (GRHD) simulations computationally prohibitive. For this reason, we model the WD as a "pseudo-white dwarf" (pWD) as in our binary WDNS head-on collisions study [PRD83:064002,2011]. Our GRHD simulations of a pWDNS system with a 0.98-solar-mass WD and a 1.4-solar-mass NS show that the merger remnant is a spinning Thorne-Zytkow-like Object (TZlO) surrounded by a massive disk. The final total rest mass exceeds Mmax, but the remnant does not collapse promptly. To assess whether the object will ultimately collapse after cooling, we introduce radiative thermal cooling. We first apply our cooling algorithm to TZlOs formed in WDNS head-on collisions, and show that these objects collapse and form black holes on the cooling time scale, as expected. However, when we cool the spinning TZlO formed in the merger of a circular-orbit WDNS binary, the remnant does not collapse, demonstrating that differential rotational support is sufficient to prevent collapse. Given that the final total mass exceeds Mmax, magnetic fields and/or viscosity may redistribute angular momentum and ultimately lead to delayed collapse to a BH. We infer that the merger of realistic massive WDNS binaries likely will lead to the formation of spinning TZlOs that undergo delayed collapse. = =  [|arXiv:1109.5406] [ [|pdf], [|ps] , [|other] ] = A Spectropolarimetric Comparison of the Type II-Plateau Supernovae SN 2008bk and SN 2004dj = [|Douglas C. Leonard] (San Diego State University), [|Luc Dessart] (Marseille), [|D. John Hillier] (U. Pittsburgh), [|Giuliano Pignata] (Univ. Andres Bello, Chile) Comments: 4 pages, 1 figure, to appear in AIP conference proceedings: Stellar Polarimetry, From Birth to Death, eds. J. Hoffman, B. Whitney, and J. Bjorkman Subjects: Solar and Stellar Astrophysics (astro-ph.SR) The Type II-Plateau supernova (SN II-P) SN 2004dj was the first SN II-P for which spectropolarimetry data were obtained with fine temporal sampling before, during, and after the fall off of the photometric plateau -- the point that marks the transition from the photospheric to the nebular phase in SNe II-P. Unpolarized during the plateau, SN 2004dj showed a dramatic spike in polarization during the descent off of the plateau, and then exhibited a smooth polarization decline over the next two hundred days. This behavior was interpreted by Leonard et al. (2006) as evidence for a strongly non-spherical explosion mechanism that had imprinted asphericity only in the innermost ejecta. In this brief report, we compare nine similarly well-sampled epochs of spectropolarimetry of the Type II-P SN 2008bk to those of SN 2004dj. In contrast to SN 2004dj, SN 2008bk became polarized well before the end of the plateau and also retained a nearly constant level of polarization through the early nebular phase. Curiously, although the onset and persistence of polarization differ between the two objects, the detailed spectropolarimetric characteristics at the epochs of recorded maximum polarization for the two objects are extremely similar, feature by feature. We briefly interpret the data in light of non-Local-Thermodynamic Equilibrium, time-dependent radiative-transfer simulations specifically crafted for SN II-P ejecta.

=24 Sep 2011:= [|arXiv:1109.4970] [ [|pdf], [|ps] , [|other] ] = Circumstellar Disks at White Dwarfs: Observations = [|J. Farihi]  Comments: Book chapter in "White Dwarf Atmospheres and Circumstellar Environments", ed. D. W. Hoard, Wiley-VCH, ISBN 978-3-527-41031-6, published September 2011 Subjects: Solar and Stellar Astrophysics (astro-ph.SR) ; Earth and Planetary Astrophysics (astro-ph.EP) I present a thorough review of existing observational studies of circumstellar disks at white dwarf stars. This is done from a historical perspective beginning just prior to the ground-based discovery of dust at G29-38 nearly 25 years ago, and following the many scientific breakthroughs made with the Spitzer Space Telescope. The chapter is ideal for new or advanced students of this field and includes significant material on the observational properties of metal-polluted white dwarf atmospheres, which are physically connected to their circumstellar environments. Included are all published observations circa mid-2010, with an emphasis on the nascent field of exoterrestrial planetary (bulk) chemistry via disk-polluted atmospheric spectroscopy.

__[|arXiv:1109.4978]__ [ [|pdf], [|ps] , [|other] ] = Detecting Double Degenerate Progenitors of SNe Ia with LISA = [|Alexander Stroeer], [|Matthew Benacquista] , [|Frank Ceballos]  Comments: 4 pages, to appear in Proceedings of IAU Symp. 281, Binary Paths to Type Ia Supernovae Explosions, ed. R. Di Stefano and M. Orio Subjects: Solar and Stellar Astrophysics (astro-ph.SR) ; General Relativity and Quantum Cosmology (gr-qc) The Galactic population of close white dwarf binaries is expected to provide the largest number of gravitational wave sources for low frequency detectors such as the Laser Interferometer Space Antenna (LISA). Current data analysis techniques have demonstrated the capability of resolving on the order of $10^4$ white dwarf binaries from a 2 year observation. Resolved binaries are either at high frequencies or large amplitudes. Such systems are more likely to be high-mass binaries, a subset of which will be progenitors of SNe Ia in the double degenerate scenario. We report on results of a study of the properties of resolved binaries using a population synthesis model of the Galactic white dwarf binaries and a LISA data analysis algorithm using Mock LISA Data Challenge tools.

__[|arXiv:1109.5080]__ [ [|pdf], [|ps] , [|other] ] = The Photometric Classification Server for Pan-STARRS1 = [|R.P. Saglia], [|J.L. Tonry] , [|R. Bender] , [|N. Greisel] , [|S. Seitz] , [|R. Senger] , [|J. Snigula] , [|S. Phleps] , [|D. Wilman] , [|C.A.L. Bailer-Jones] , [|R.J. Klement] , [|H.-W. Rix] , [|K. Smith] , [|P.J. Green] , [|W. S. Burgett] , [|K. C. Chambers] , [|J. N. Heasley] , [|N. Kaiser] , [|E. A. Magnier] , [|J. S. Morgan] , [|P. A. Price] , [|C.W. Stubbs] , [|R. J. Wainscoat]  Comments: Submitted to ApJ  Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO) The Pan-STARRS1 survey is obtaining multi-epoch imaging in 5 bands (gps rps ips zps yps) over the entire sky North of declination -30deg. We describe here the implementation of the Photometric Classification Server (PCS) for Pan-STARRS1. PCS will allow the automatic classification of objects into star/galaxy/quasar classes based on colors, the measurement of photometric redshifts for extragalactic objects, and constrain stellar parameters for stellar objects, working at the catalog level. We present tests of the system based on high signal-to-noise photometry derived from the Medium Deep Fields of Pan-STARRS1, using available spectroscopic surveys as training and/or verification sets. We show that the Pan-STARRS1 photometry delivers classifications and photometric redshifts as good as the Sloan Digital Sky Survey (SDSS) photometry to the same magnitude limits. In particular, our preliminary results, based on this relatively limited dataset down to the SDSS spectroscopic limits and therefore potentially improvable, show that stars are correctly classified as such in 82% of cases, galaxies in 98% and QSOs in 80%. False positives are less than 1% for galaxies and ~30% for stars and QSOs. Moreover, photometric redshifts for 1000 luminous red galaxies up to redshift 0.5 are determined to 2.4% precision with just 0.4% catastrophic outliers and small (-0.5%) residual bias. PCS will create a value added catalog with classifications and photometric redshifts for eventually many millions sources. = = =23 Sep 2011:= [|arXiv:1109.4637] [ [|pdf], [|ps] , [|other] ] Circumstellar dust as a solution to the red supergiant supernova progenitor problem [|Joseph J. Walmswell], [|John J. Eldridge]   Comments: 10 pages, 6 figures and 4 tables. Accepted for publication in MNRAS Subjects: Solar and Stellar Astrophysics (astro-ph.SR) We investigate the red supergiant problem: the apparent dearth of Type IIP supernova progenitors with masses between 16 and 30 M_sun. Although red supergiants with masses in this range have been observed, none have been identified as progenitors in pre-explosion images. We show that by failing to take into account the additional extinction resulting from the dust produced in the red supergiant winds, we risk underestimating the luminosity of the most massive red supergiants at the end of their lives. We estimate the initial masses of all Type IIP progenitors for which observations exist and analyse the resulting population. We find that the most likely maximum mass for a Type IIP progenitor is 21^{+2}_{-1} M_sun. This is in closer agreement with the limit predicted from single star evolution models.

[|arXiv:1109.4652] [ [|pdf], [|ps] , [|other] ] The core-degenerate scenario for type Ia supernovae [|Noam Soker] (Technion, Israel)  Comments: To appear in Proceedings of IAU Symp. 281, Binary Paths to Type Ia Supernovae Explosions, ed. R. Di Stefano and M. Orio Subjects: Solar and Stellar Astrophysics (astro-ph.SR) In the core-degenerate (CD) scenario for the formation of Type Ia supernovae (SNe) the Chandrasekhar or super-Chandrasekhar mass white dwarf (WD) is formed at the termination of the common envelope phase or during the planetary nebula phase, from a merger of a WD companion with the hot core of a massive asymptotic giant branch (AGB) star. The WD is destructed and accreted onto the more massive core. In the CD scenario the rapidly rotating WD is formed shortly after the stellar formation episode, and the delay from stellar formation to explosion is basically determined by the spin-down time of the rapidly rotating merger remnant. The spin-down is due to the magneto-dipole radiation torque. Several properties of the CD scenario make it attractive compared with the double-degenerate (DD) scenario. (1) Off-center ignition of carbon during the merger process is not likely to occur. (2) No large envelope is formed. Hence avoiding too much mass loss that might bring the merger remnant below the critical mass. (3) This model explains the finding that more luminous SNe Ia occur preferentially in star forming galaxies. = =  [|arXiv:1109.4717] [ [|pdf], [|other] ] Supernovae without host galaxy? - Hypervelocity stars in foreign galaxies [|Peter-Christian Zinn], [|Philipp Grunden] , [|Dominik J. Bomans]   Comments: 11 pages, 7 figures, accepted for publication by A&amp;A, abstract abridged due to arXiv requirements  Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO) Harvesting the SAI supernova catalog, we search for SNe that apparently do not occur within a distinct host galaxy but lie a great distance apart from their assigned host galaxy. Assuming two possible explanations for this host-lessness of a fraction of reported SNe, namely (i) a host galaxy which is too faint to be detected within the limits of currently available surveys or (ii) a hypervelocity star (HVS) as progenitor of the SN,we want to distinguish between these two cases. To do so, we use deep imaging to test explanation (i). If within our detection limit of 27 mag/arcsec^2, the central surface brightness of the faintest known LSB galaxy so far, no galaxy could be identified, we discard this explanation and regard the SN, after several other checks, to have had a hypervelocity star progenitor. Analyzing a selected subsample of five host-less SNe we find one, SN 2006bx in UGC5434, to be put in the hypervelocity progenitor category with a high probability, exhibiting a projected velocity of > 800 km/s. SN 1969L in NGC1058 is most likely an example for a very extended star-forming disk visible only in the far-UV, not in the optical wavebands. Therefore this SN is clearly due to in situ star formation. This mechanism may also apply for two other SNe we investigated (SN 1970L and SN 1997C), but this cannot be determined with final certainty. Another one, SN 2005nc associated with a gamma-ray burst (GRB 050525), is a special case not covered by our initial assumptions. Even with deep Hubble data, a host galaxy could not be unambiguously identified.

__[|arXiv:1109.4740]__ [ [|pdf], [|ps] , [|other] ] A highly magnified supernova at z=1.703 behind the massive galaxy cluster Abell 1689 [|R. Amanullah], [|A. Goobar] , [|B. Clément] , [|J.-G. Cuby] , [|H. Dahle] , [|T. Dahlén] , [|J. Hjorth] , [|S. Fabbro] , [|J. Jönsson] , [|J.-P. Kneib] , [|C. Lidman] , [|M. Limousin] , [|E. Mörtsell] , [|J. Nordin] , [|K. Paech] , [|J. Richard] , [|T. Riehm] , [|V. Stanishev] , [|D. Watson]   Comments: 19 pages, 4 figures, 1 table, submitted to ApJL  Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO) Our ability to study the most remote supernova explosions, crucial for the understanding of the evolution of the high-redshift universe and its expansion rate, is limited by the light collection capabilities of telescopes. However, nature offers unique opportunities to look beyond the range within reach of our unaided instruments thanks to the light-focusing power of massive galaxy clusters. Here we report on the discovery of one of the most distant supernovae ever found, at redshift, z=1.703. Due to a lensing magnification factor of 4.3\pm0.3, we are able to measure a lightcurve of the supernova, as well as spectroscopic features of the host galaxy with a precision comparable to what will otherwise only be possible with future generation telescopes.

[|arXiv:1109.4786] [ [|pdf], [|ps] , [|other] ] He-accreting WDs as SNe Ia Progenitors [|Luciano Piersanti], [|Amedeo Tornambe'] , [|Lev Yungelson] , [|Oscar Straniero]   Comments: 4 pages, 3 figures, contribution to the Proceeding of IAU 281 "Binary Paths to Type Ia Supernovae Explosions"  Subjects: Solar and Stellar Astrophysics (astro-ph.SR) We investigate the thermal response of CO WDs accreting He-rich matter directly from their companions in binary systems. Our results suggest that the He-channel cannot provide progenitors for majority of "normal" SNe Ia.

=22 Sep 2011:= [|arXiv:1109.4413] [ [|pdf], [|other] ] = Shocking results without shocks: Subsonic turbulence in smoothed particle hydrodynamics and moving-mesh simulations = [|Andreas Bauer] (1), [|Volker Springel] (1, 2) ((1) HITS, (2) ZAH) Comments: 17 pages, 15 figures  Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO) ; Instrumentation and Methods for Astrophysics (astro-ph.IM); Fluid Dynamics (physics.flu-dyn) Highly supersonic, compressible turbulence is thought to be of tantamount importance for star formation processes in the interstellar medium (ISM). Likewise, cosmic structure formation is expected to give rise to subsonic turbulence in the intergalactic medium (IGM), which may substantially modify the thermodynamic structure of gas in virialized dark matter halos and affect small-scale mixing processes in the gas. Numerical simulations have played a key role in characterizing the properties of astrophysical turbulence, but thus far systematic code comparisons have been restricted to the supersonic regime, leaving it unclear whether subsonic turbulence is faithfully represented by the numerical techniques commonly employed in astrophysics. Here we focus on comparing the accuracy of smoothed particle hydrodynamics (SPH) and our new moving-mesh technique AREPO in simulations of driven subsonic turbulence. To make contact with previous results, we also analyze simulations of transsonic and highly supersonic turbulence. We find that the widely employed standard formulation of SPH quite badly fails in the subsonic regime. Instead of building up a Kolmogorov-like turbulent cascade, large-scale eddies are quickly damped close to the driving scale and decay into small-scale velocity noise. In contrast, our moving-mesh technique does yield power-law scaling laws for the power spectra of velocity, vorticity and density, consistent with expectations for fully developed isotropic turbulence. This casts doubt about the reliability of SPH for simulations of cosmic structure formation, especially if turbulence in clusters of galaxies is indeed significant. In contrast, SPH's performance is much better for supersonic turbulence, as here the flow is kinetically dominated and characterized by a network of strong shocks, which can be adequately captured with SPH. [Abridged] = =  [|arXiv:1109.4482] [ [|pdf], [|ps] , [|other] ] = Numerical simulations of diffusive shock acceleration in SNRs = [|V.N.Zirakashvili], [|V.S.Ptuskin]  Comments: 14 pages, 10 figures, accepted to Astroparticle Physics  Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) A new numerical model of the nonlinear diffusive shock acceleration is presented. It is used for modeling of particle acceleration in supernova remnants. The model contains coupled spherically symmetric hydrodynamic equations and the transport equations for energetic protons, ions and electrons. The forward and reverse shocks are included in the consideration. The spectra of cosmic rays released into interstellar medium from a supernova remnant are determined. The role of the reverse shock in the production of CR ions and positrons is discussed.

[|arXiv:1109.4534] [ [|pdf], [|ps] , [|other] ] = The 2011 outburst of the recurrent novaT Pyx. Evidence for a face-on bipolar ejection = [|Olivier Chesneau] (FIZEAU), [|A. Meilland] (FIZEAU), [|D. P. K. Banerjee] (PRL), [|Jean-Baptiste Le Bouquin] (IPAG), [|H. A. Mcalister] (CHARA), [|F. Millour] (FIZEAU), [|S.T. Ridgway] (NOAO), [|A. Spang] (FIZEAU), [|T.A. Ten Brummelaar] (CHARA), [|M. Wittkowski] (ESO), [|N. M. Ashok] (PRL), [|M. Benisty] (MPIA), [|J.-P. Berger] (ESO), [|T. S. Boyajian], [|C. Farrington] (CHARA), [|P.J. Goldfinger] (CHARA), [|A. Mérand] (ESO), [|N. Nardetto] (FIZEAU), [|R. Petrov] (FIZEAU), [|T. Rivinius] (ESO), [|G. Schaefer] , [|G. Zins] (IPAG) Comments: Submitted to Astronomy and Astrophysics (2011)  Subjects: Solar and Stellar Astrophysics (astro-ph.SR) We report on near-IR interferometric observations of the outburst of the recurrent nova T Pyx. We obtained near-IR observations of T Pyx at dates ranging from t=2.37d to t=48.2d after the outburst, with the CLASSIC recombiner, located at the CHARA array, and with the PIONIER and AMBER recombiners, located at the VLTI array. These data are supplemented with near-IR photometry and spectra obtained at Mount Abu, India. Slow expansion velocities were measured ($\leq$300km/s) before t=20d (assuming D=3.5kpc). From t=28d on, the AMBER and PIONIER continuum visibilities (K and H band, respectively) are best simulated with a two component model consisting of an unresolved source plus an extended source whose expansion velocity onto the sky plane is lower than 700km/s. The expansion of the Brgamma line forming region, as inferred at t=28d and t=35d is slightly larger, implying velocities in the range 500-800km/s, still strikingly lower than the velocities of 1300-1600km/s inferred from the Doppler width of the line. Moreover, a remarkable pattern was observed in the Brgamma differential phases. A semi-quantitative model using a bipolar flow with a contrast of 2 between the pole and equator velocities, an inclination of i=15 degrees and a position angle P.A.=110 degrees provides a good match to the AMBER observables (spectra, differential visibilities and phases). At t=48d, a PIONIER dataset confirms the two component nature of the H band emission, consisting of an unresolved stellar source and an extended region whose appearance is circular and symmetric within error bars.These observations are most simply interpreted within the frame of a bipolar model, oriented nearly face-on. This finding has profound implications for the interpretation of past, current and future observations of the expanding nebula.

[|arXiv:1109.4573] [ [|pdf], [|ps] , [|other] ] = The progenitor of a type Ia supernova with a short delay time? =  [|S.Mereghetti], [|N.La Palombara] , [|A.Tiengo] , [|P.Esposito] , [|L.Stella] , [|G.L.Israel]   Comments: 4 pages, to appear in Proceedings of IAU Symp. 281, Binary Paths to Type Ia Supernovae Explosions, ed. R. Di Stefano and M. Orio Subjects: Solar and Stellar Astrophysics (astro-ph.SR) ; High Energy Astrophysical Phenomena (astro-ph.HE) HD49798/RXJ0648.0-4418 is the only known X-ray binary composed of a hot subdwarf and a massive white dwarf (M=1.28+/-0.05 Msun). This system, with an orbital period of 1.55 days, is the outcome of a common envelope evolution, most likely of a pair of stars with initial masses of about 8-10 Msun. When the hot subdwarf, currently in a He-burning phase, will expand again and fill its Roche-lobe, the enhanced mass transfer can rapidly bring the already massive white dwarf above the Chandrasekhar limit. The possible final fate, either a Type Ia supernova explosion or an accretion induced collapse, is particularly interesting in view of the high rotational velocity of this star, which has the shortest spin period (13 s) observed in a white dwarf.

=21 Sep 2011:= [|arXiv:1109.4273] [ [|pdf], [|ps] , [|other] ] = Type Ia Supernovae and Supersoft X-ray Sources = [|L. Yungelson]  Comments: Submitted to Proceedings of IAU Symp. 281 "Binary Paths to Type Ia Supernovae Explosions", 4 pp., 3 figs Subjects: Solar and Stellar Astrophysics (astro-ph.SR) The rates of SN Ia for double-degenerate and single-degenerate scenario are computed for the models of spiral and elliptical galaxies. The number of nuclearly burning white dwarfs (NBWD) is traced. The data favours double-degenerate scenario and suggests lower number of NBWD per unit mass in ellipticals and their lower average mass as one of the reasons for the difference in the number of supersoft X-ray sources observed in the galaxies of different types.

[|arXiv:1109.4326] [ [|pdf], [|ps] , [|other] ] = Supernova Remnants and Pulsar Wind Nebulae in the Cherenkov Telescope Array era = [|M. Renaud] (1), for the [|CTA Consortium] ((1) LUPM, CNRS-IN2P3/Montpellier II University, France) Comments: 5 pages, 4 figures. Proceeding of the Cosmic Rays and the Interstellar Medium (CRISM-2011) conference (Montpellier, France, June 26-July 1). To be published in a special issue of Memorie della Societa Astronomica Italiana Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) The Cherenkov Telescope Array (CTA) is planned to serve as a ground-based observatory for (very-)high-energy gamma-ray astronomy, open to a wide astrophysics community, providing a deep insight into the non-thermal high-energy universe. It foresees a factor of ~10 improvement in sensitivity above 100 GeV, with substantially better angular and spectral resolutions and wider field-of-view in comparison with currently operational experiments. The CTA consortium is investigating the different physics cases for different proposed array configurations and subsets. Pulsar Wind Nebulae (PWNe), the most numerous VHE Galactic sources, and Supernova Remnants (SNRs), believed to be the acceleration sites of the bulk of cosmic rays, will be two of the main observation targets for CTA. In this contribution, the main scientific goals regarding PWNe and SNRs are discussed, and quantitative examples of the capability of CTA to achieve these objectives are presented.

[|arXiv:1109.4334] [ [|pdf], [|other] ] = Properties of Carbon-Oxygen White Dwarf Merger Remnants = [|Chenchong Zhu], [|Philip Chang] , [|Marten van Kerkwijk] , [|James Wadsley]  Comments: 5 pages, 1 figure, to appear in IAU 281 Proceedings "Binary Paths to Type Ia Supernovae Explosions"  Subjects: Solar and Stellar Astrophysics (astro-ph.SR) Recent studies have shown that for suitable initial conditions both super- and sub-Chandrasekhar mass carbon-oxygen white dwarf mergers produce explosions similar to observed SNe Ia. The question remains, however, how much fine tuning is necessary to produce these conditions. We performed a large set of SPH merger simulations, sweeping the possible parameter space. We find trends for merger remnant properties, and discuss how our results affect the viability of our recently proposed sub-Chandrasekhar merger channel for SNe Ia.

[|arXiv:1109.4394] [ [|pdf], [|other] ] = Ultra-soft sources as supernova type Ia progenitors = [|Kelly Lepo], [|Marten van Kerkwijk]  Comments: 4 pages, 1 Figure. To appear in Proceedings of IAU Symp. 281, Binary Paths to Type Ia Supernovae Explosions Subjects: Solar and Stellar Astrophysics (astro-ph.SR) Missing from the usual considerations of nuclear burning white dwarfs as Type Ia supernova progenitors are systems with very higher mass transfer rates, where more material than is needed for steady burning accretes on the white dwarf. This will move out the photosphere of the white dwarf, causing it to emit at longer wavelengths. Thus, we propose the name ultra-soft source (USS) for these objects.

We present a VLT/FLAMES survey looking for USS in the SMC, selected to be bright in the far UV and with blue far UV-V colors. While we find some unusual objects, and recover known planetary nebula and WR stars, we detect no objects with strong He II lines, which should be a signature of USS. This null result either puts an upper limit on the number of USS in the SMC, or shows that we do not understand what the optical spectra of such objects will look like.

We also discuss the unusual LMC [WN] planetary nebula LMC N66 as a possible example of an USS. It has a luminosity consistent with that expected, and its spectra show incompletely CNO-processed material - strong helium lines, some hydrogen, enhanced nitrogen and depleted carbon. It also shows periodic outbursts. USS may resemble N66 in quiescence. However, it lacks a FUV excess, contrary to our predictions.

=20 Sep 2011:= [|arXiv:1109.3740] [ [|pdf], [|other] ] = The Formation of Binaries = [|Kaitlin M. Kratter]  Comments: 13 pages, 1 figure. Invited review in proceedings for the ESO Workshop 'Evolution of Compact Binaries', 6-11 March 2011, Vi\~na del Mar, Chile, edited by L. Schmidtobreick, M. R. Schreiber, C. Tappert, ASP conference series Subjects: Solar and Stellar Astrophysics (astro-ph.SR) Binary stars produce an array of dramatic astrophysical phenomena. They allow us to probe stellar structure, nuclear physics, and gravitational wave physics. They also produce the powerful supernovae that allow us to measure the scale of the universe. Despite their importance and ubiquity, many questions remain unanswered as to how the star formation process produces the wide array of stellar multiples that we observe. A complete model for binary formation encompasses three main components. We must know: (1) the primordial population of systems, (2) the influence of the dynamical processes that reshape this distribution as stars form and natal clusters disperse, and (3) the role of binary stellar evolution. In this article I review the most prominent theories for binary formation: turbulent core fragmentation, disk fragmentation, and competitive accretion. I argue that turbulent core fragmentation at all masses, with disk fragmentation added in at the upper end of the mass spectrum, might explain the trend towards increasing multiplicity for higher mass stars. In addition, I provide a brief overview of the observational statistics and of some of the important processes that modify the primordial distribution of stellar orbits.

__[|arXiv:1109.3802]__ [ [|pdf], [|ps] , [|other] ] = The Carnegie Hubble Program = [|Wendy L. Freedman], [|Barry F. Madore] , [|Vicky Scowcroft] , [|Andy Monson] , [|S. E. Persson] , [|Mark Seibert] , [|Jane Rigby] , [|Laura Sturch] , [|Peter Stetson]  Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO) We present an overview of and preliminary results from an ongoing comprehensive program that has a goal of determining the Hubble constant to a systematic accuracy of 2%. As part of this program, we are currently obtaining 3.6 micron data using the Infrared Array Camera (IRAC) on Spitzer, and the program is designed to include JWST in the future. We demonstrate that the mid-infrared period-luminosity relation for Cepheids at 3.6 microns is the most accurate means of measuring Cepheid distances to date. At 3.6 microns, it is possible to minimize the known remaining systematic uncertainties in the Cepheid extragalactic distance scale. We discuss the advantages of 3.6 micron observations in minimizing systematic effects in the Cepheid calibration of the Hubble constant including the absolute zero point, extinction corrections, and the effects of metallicity on the colors and magnitudes of Cepheids. We are undertaking three independent tests of the sensitivity of the mid-IR Cepheid Leavitt Law to metallicity, which when combined will allow a robust constraint on the effect. Finally, we are providing a new mid-IR Tully-Fisher relation for spiral galaxies.

__[|arXiv:1109.3971]__ [ [|pdf], [|other] ] = Ejecta detection in the middle-aged Galactic supernova remnant G296.1-0.5 observed with Suzaku = [|F. Gok], [|A. Sezer]  Comments: 9 pages, 5 figures, 2 tables  Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) In this paper, we report the detection of ejecta in the middle-aged Galactic supernova remnant G296.1-0.5 with the X-ray Imaging Spectrometer onboard the Suzaku satellite. The spectra of three lobes, north, southeast and southwest and inter-lobe regions, consist of soft (0.3-2.0 keV) emission originated from non-equilibrium ionization plasma. In north, southeast and inter-lobe regions, the thermal emission can be represented by a one-component, in southwest region it can be represented by two- component non-equilibrium ionization (VNEI) model. The spectra of studied regions have lines of N, O, Ne, Mg and Si elements. Si emission from this remnant is shown for the first time in this work. Enhanced abundances of Ne, Mg and Si elements obtained show the ejecta contribution in all regions. Assuming that the remnant is in Sedov phase, we obtained ambient density n0 ~ 0.45 cm-3, age t ~ 2.8 x 104 yr, shock velocity Vs ~ 320 km s-1, shock temperature Ts ~ 1.2 x 106 K, and swept-up mass Msw ~ 340 M at an adopted distance of d=3 kpc.

[|arXiv:1109.4116] [ [|pdf], [|ps] , [|other] ] = Runaway and hypervelocity stars. The supernova connection = __[|Ralf Napiwotzki]__, [|Manuel D. V. Silva]  Comments: Proceedings Frascati workshop Multifrequency Behaviour of High Energy Cosmic Sources, Vulcano 23-28 May 2011. To be published in MEMORIE della Societ\`a Astronomica Italiana (2 figures) Subjects: Solar and Stellar Astrophysics (astro-ph.SR) We present an investigation of the known sample of runaway stars. The orbits of these stars are traced back to their origin in the Galactic disc. The velocity distribution of these stars is compared to theoretical predictions. We conclude that the majority of stars is well explained by the standard binary ejection mechanism (BEM) and the dynamical ejection mechanism (DEM). However, we find a sample of ten stars which has ejection velocities in excess of those predicted by standard scenarios. We discuss how these can be explained by a variant of the BEM. This mechanism can create runaway stars exceeding the Galactic escape velocity (known as hypervelocity stars). The number of runaway stars in our Galaxy is estimated and compared to the known sample of high mass X-ray binaries, whose formation is linked to the BEM channel.

=19 Sep 2011:= [|arXiv:1109.3629] [ [|pdf], [|ps] , [|other] ] = Constraining the Properties of SNe~Ia Progenitors from Light Curves = [|B. Sadler], [|P. Hoeflich] , [|E. Baron] , [|K. Krisciunas] , [|G. Folatelli] , [|M. Hamuy] , [|M. Khokhlov. M. Phillips] , [|N. Suntzeff] , [|L. Wang]  Comments: 4 pages &amp; 4 figures  Journal-ref: in: 'Binary Path to Type Ia Supernova Explosions, Proceedings of the IAU 281, eds. DiStephano & M. Orio, Cambridge University Press (2012) Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO) ; Space Physics (physics.space-ph) [|arXiv:1109.3511] (cross-list from nucl-th) [ [|pdf], [|ps] , [|other] ] = Nuclear pasta in supernovae and neutron stars = [|Gentaro Watanabe], [|Toshiki Maruyama]  Comments: 22 pages, 9 figures; to appear as a chapter in the book "Neutron Star Crust", edited by C. A. Bertulani and J. Piekarewicz Subjects: Nuclear Theory (nucl-th) ; Solar and Stellar Astrophysics (astro-ph.SR); Other Condensed Matter (cond-mat.other)

=15 Sep 2011:= __[|arXiv:1109.2912]__ [ [|pdf], [|ps] , [|other] ] = Early radio and X-ray observations of the youngest nearby type Ia supernova PTF11kly (SN 2011fe) = [|Assaf Horesh], [|S. R. Kulkarni] , [|Derek B. Fox] , [|John Carpenter] , [|Mansi M. Kasliwal] , [|Eran O. Ofek] , [|Robert Quimby] , [|Avishay Gal-Yam] , [|S. Bradley Cenko] , [|A. G. de Bruyn] , [|Atish Kamble] , [|Ralph A. M. J. Wijers] , [|Alexander J. van der Horst] , [|Chryssa Kouveliotou] , [|Philipp Podsiadlowski] , [|Mark Sullivan] , [|Kate Maguire] , [|Peter E. Nugent] , [|Neil Gehrels] , [|Nicholas M. Law] , [|Dovi Poznanski] , [|Michael Shara]  Comments: 22 pages, 2 figures, submitted to ApJ  Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO) ; High Energy Astrophysical Phenomena (astro-ph.HE); Solar and Stellar Astrophysics (astro-ph.SR) On August 24 (UT) the Palomar Transient Factory (PTF) discovered PTF11kly (SN 2011fe), the youngest and most nearby type Ia supernova (SN Ia) in decades. We followed this event up in the radio (centimeter and millimeter bands) and X-ray bands, starting about a day after the estimated explosion time. We present our analysis of the radio and X-ray observations, yielding the tightest constraints yet placed on the pre-explosion mass-loss rate from the progenitor system of this supernova. We find a robust limit of dM/dt<10^-8 (w/100 km/s) [M_solar/yr] from sensitive X-ray non-detections, as well as a similar limit from radio data, which depends, however, on assumptions about microphysical parameters. We discuss our results in the context of single-degenerate models for SNe Ia and find that our observations modestly disfavor symbiotic progenitor models involving a red giant donor, but cannot constrain systems accreting from main-sequence or sub-giant stars, including the popular supersoft channel. In view of the proximity of PTF11kly and the sensitivity of our prompt observations we would have to wait for a long time (decade or longer) in order to more meaningfully probe the circumstellar matter of Ia supernovae. Added by F. Förster

=14 Sep 2011:= [|arXiv:1109.2616] [ [|pdf], [|ps] , [|other] ] = What are Published X-ray lightcurves telling us about Young Supernova Expansion? =  [|Vikram V. Dwarkadas] (1), [|Julieta Gruszko] (2) ((1) University of Chicago, (2) University of Rochester)  Comments: 12 pages, 3 color Figures. Accepted to MNRAS Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) Massive stars lose mass in the form of stellar winds and outbursts. This material accumulates around the star. When the star explodes as a supernova (SN) the resulting shock wave expands within this circumstellar medium. The X-ray emission resulting from the interaction depends, among other parameters, on the density of this medium, and therefore the variation in the X-ray luminosity can be used to study the variation in the density structure of the medium. In this paper we explore the X-ray emission and lightcurves of all known SNe, in order to study the nature of the medium into which they are expanding. In particular we wish to investigate whether young SNe are expanding into a steady wind medium, as is most often assumed in the literature. We find that in the context of the theoretical arguments that have been generally used in the literature, many young SNe, and especially those of Type IIn, which are the brightest X-ray luminosity class, do not appear to be expanding into steady winds. Some IIns appear to have very steep X-ray luminosity declines, indicating density declines much steeper than r$^{-2}$. However, other IIns show a constant or even increasing X-ray luminosity over periods of months to years. Many other SNe do not appear to have declines consistent with expansion in a steady wind. SNe with lower X-ray luminosities appear to be more consistent with steady wind expansion, although the numbers are not large enough to make firm statistical comments. The numbers do indicate that the expansion and density structure of the circumstellar medium must be investigated before assumptions can be made of steady wind expansion. Unless a steady wind can be shown, mass-loss rates deduced using this assumption may need to be revised. Added by F. Förster

=13 Sep 2011:= [|arXiv:1109.2124] [[|pdf], [|ps], [|other]] = Title: A Spallation Model for the Titanium-rich Supernova Remnant Cassiopeia A= Authors: [|Rachid Ouyed] (1), [|Denis Leahy] (1), [|Amir Ouyed] (1), [|Prashanth Jaikumar] (2) ((1) Physics&Astronomy, University of Calgary, AB, Canada, (2) Physics&Astronomy, California State University Long Beach, CA, USA) Comments: Accepted/to be published in Physical Review Letters. [ for more info on the Quark Nova, see: [|this http URL] ] Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) ; Nuclear Theory (nucl-th) Titanium-rich subluminous supernovae are rare and challenge current SN nucleosynthesis models. We present a model in which ejecta from a standard Supernova is impacted by a second explosion of the neutron star (a Quark-nova), resulting in spallation reactions that lead to 56Ni destruction and 44Ti creation under the right conditions. Basic calculations of the spallation products shows that a delay between the two explosions of ~ 5 days reproduces the observed abundance of 44Ti in Cas A and explains its low luminosity as a result of the destruction of 56Ni. Our results could have important implications for lightcurves of subluminous as well as superluminous supernovae. Added by F. Förster

[|arXiv:1109.2181] [[|pdf], [|ps], [|other]] = Title: A search for Type Ia supernova progenitors: the central stars of the planetary nebulae NGC 2392 and NGC 6026= Authors: [|Ashkbiz Danehkar], [|David J. Frew], [|Orsola De Marco], [|Quentin A. Parker] Comments: 2 pages, presented at the IAU Symposium 281 "Binary Paths to the Explosions of type Ia Supernovae", Padova, Italy, July 2011 Subjects: Solar and Stellar Astrophysics (astro-ph.SR) We use photoionization modeling to assess the binary nature of the central stars of NGC 2392 and NGC 6026. If they are close binaries, they are potential Type Ia supernova (SN Ia) progenitors if the total mass exceeds the Chandrasekhar limit. We show that the nucleus of NGC 2392 likely has a hot, massive (\simeq 1 Ms) white dwarf companion, and a total mass of ~ 1.6 Ms, making it an especially interesting system. The binary mass in NGC 6026 is less, ~ 1.1 Ms. Even though its orbital period is short, it is not considered to be a SN Ia progenitor. Added by F. Förster

[|arXiv:1109.2233] [[|pdf], [|ps], [|other]] = Title: An Extreme Pulsar Tail Protruding from the Frying Pan Supernova Remnant= Authors: [|C.-Y. Ng], [|N. Bucciantini], [|B. M. Gaensler], [|F. Camilo], [|S. Chatterjee], [|A. Bouchard] Comments: 7 pages, 2 figures, submitted to the Astrophysical Journal Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) The Frying Pan (G315.9-0.0) is a radio supernova remnant with a peculiar linear feature extending 10' radially outward from the rim of the shell. We present radio imaging and polarization observations with the Molonglo Observatory Synthesis Telescope and the Australia Telescope Compact Array, confirming the linear structure as a bow-shock pulsar wind nebula powered by the young pulsar J1437-5959. Extending over 20pc, this is the longest pulsar tail observed. We found a stand-off distance of 0.002pc, smallest among any bow-shock systems, suggesting a large pulsar velocity over 1000km/s and a high Mach number ~200. The magnetic field geometry inferred from radio polarimetry shows a good alignment with the tail orientation, which could be a result of high flow speed. There are also hints that the postshock wind has a low magnetization and is dominated by electrons and positrons in energy. This study shows that pulsar wind nebulae can offer a powerful probe of the pulsar environment, particularly for the case of a bow-shock where the parent supernova shell is also detected. Added by F. Förster

[|arXiv:1109.2244] [[|pdf], [|other]] = Title: Non-thermal images of SN 1006: from radio to gamma-rays= Authors: [|V.Beshley] Comments: 2 pages, 1 figure, accepted for publication on proceedings of The International Conference of Young Astronomers (ICYA) 2009 Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) Supernova remnants (SNRs) are believed to be the main sources of galactic cosmic rays. Discovery of the non-thermal component in X-ray spectrum of SN 1006 in 1995 and detection of a number of SNRs by H.E.S.S. strengthen the investigation of SNRs. SN 1006 remains to be one of the most interesting objects for high-energy astrophysics. Electrons accelerated by the shock are the source of the non-thermal radiation in radio, X-rays (via synchrotron emission) and \gamma-rays (via inverse-Compton process). Experimental images of SN 1006 are known in all these bands, including the very-high energy \gamma-ray range. An important task is therefore to model the distribution of the surface brightness in SNRs. We develop a method for synthesis of SNR maps due to the non-thermal radiation of electrons in radio, X-rays and \gamma-rays. In particular, the method takes into account the injection of particles and the behaviour of magnetic field at shocks with different obliquities as well as the radiation losses of electrons downstream of the shock. The method is used to model images of SN 1006. The images well correlate with the observations in radio and X-ray but not in \gamma-ray range. For coincide in \gamma-ray range it is needed to increases parameters \eta and E_{f}. Added by F. Förster

[|arXiv:1109.2245] [[|pdf], [|ps], [|other]] = Title: The properties of gamma-ray images of supernova remnants due to proton-proton interactions= Authors: [|V. Beshley], [|O. Petruk] Comments: 4 pages, 1 figure, submitted to Proceedings of the 20th Annual Conference of Doctoral Students - WDS'2011 Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) MAGIC and H.E.S.S experiments are the first to produce images of supernova remnats (SNRs) in TeV gamma-rays. The gamma-radiation are produced either by electrons (due to inverse-Compton scatterings) or protons (due to pion decays). We present a method to synthesize gamma-ray images of Sedov SNRs due to hadronic emission. The model is developed in the frame of a classic approach to proton acceleration and hydrodynamics of the shocks in a uniform interstellar medium; it includes energy losses of relativistic protons due to pp interactions. Our calculations show that these losses are important only for large densities of protons as it could be in case of interactions of the supernova shock with molecular cloud. Numerical simulations are used to synthesize radial profiles of hadronic TeV gamma-rays. Added by F. Förster

[|arXiv:1109.2318] [[|pdf], [|ps], [|other]] = Title: Oxygen issue in Core Collapse Supernovae= Authors: [|Abouazza Elmhamdi] Comments: As a first step we concentrate our study on 26 selected events. For future investigation we aim to enlarge the studied sample including more recent and up-dated observed CCSNe objects. 20 pages, 7 figures, 1 table Journal-ref: Published in Acta Astronomica, 2011, Volume 61, Number 2, pages 179-198 Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO) ; High Energy Astrophysical Phenomena (astro-ph.HE) We study the spectroscopic properties of a selected sample of 26 events within Core Collapse Supernovae (CCSNe) family. Special attention is paid to the nebular oxygen forbidden line [O I] 6300,6364\AA\ doublet. We analyze the line flux ratio "$F_{6300}/F_{6364}$", and infer information about the optical depth evolution, densities, volume-filling factors in the oxygen emitting zones. The line luminosity is measured for the sample events and its evolution is discussed on the basis of the bolometric light curve properties in type II and in type Ib-c SNe. The luminosities are then translated into oxygen abundances using two different methods. The resulting oxygen amounts are combined with the recovered $^{56}$Ni masses and compared with theoretical models by means of the "$[O/Fe] .vs. M_{ms}$" diagram. Two distinguishable and continuous populations, corresponding to Ib-c and type II SNe, are found. The higher mass nature of the ejecta in type II objects is also imprinted on the [Ca II] 7291,7324\AA\ over [O I] 6300,6364\AA\ luminosity ratios. Our results may be used as input parameters for theoretical models studying the chemical enrichment of galaxies. Added by F. Förster

=9 Sep 2011:= [|arXiv:1109.1593] [[|pdf], [|other]] = Title: Constraints on the Progenitor System of the Type Ia Supernova SN 2011fe/PTF11kly= Authors: [|Weidong Li], [|Joshua S. Bloom], [|Philipp Podsiadlowski], [|Adam A. Miller], [|S. Bradley Cenko], [|Saurabh W. Jha], [|Mark Sullivan], [|D. Andrew Howell], [|Peter E. Nugent], [|Nathaniel R. Butler], [|Eran O. Ofek], [|Mansi M. Kasliwal], [|Joseph W. Richards], [|Alan Stockton], [|Hsin-Yi Shih], [|Lars Bildsten], [|Michael M. Shara], [|Joanne Bibby], [|Alexei V. Filippenko], [|Mohan Ganeshalingam], [|Jeffrey M. Silverman], [|S. R. Kulkarni], [|Nicholas M. Law], [|Dovi Poznanski], [|Robert M. Quimby], [|Curtis McCully], [|Brandon Patel], [|Kate Maguire] Comments: 22 pages, 6 figures, submitted Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO) ; High Energy Astrophysical Phenomena (astro-ph.HE); Solar and Stellar Astrophysics (astro-ph.SR) Type Ia supernovae (SNe) serve as a fundamental pillar of modern cosmology, owing to their large luminosity and a well-defined relationship between light-curve shape and peak brightness. The precision distance measurements enabled by SNe Ia first revealed the accelerating expansion of the universe, now widely believed (though hardly understood) to require the presence of a mysterious "dark" energy. General consensus holds that Type Ia SNe result from thermonuclear explosions of a white dwarf (WD) in a binary system; however, little is known of the precise nature of the companion star and the physical properties of the progenitor system. Here we make use of extensive historical imaging obtained at the location of SN 2011fe/PTF11kly, the closest SN Ia discovered in the digital imaging era, to constrain the visible-light luminosity of the progenitor to be 10-100 times fainter than previous limits on other SN Ia progenitors. This directly rules out luminous red giants and the vast majority of helium stars as the mass-donating companion to the exploding white dwarf. Any evolved red companion must have been born with mass less than 3.5 times the mass of the Sun. These observations favour a scenario where the exploding WD of SN 2011fe/PTF11kly, accreted matter either from another WD, or by Roche-lobe overflow from a subgiant or main-sequence companion star. Added by F. Förster

[|arXiv:1109.1770] [[|pdf], [|ps], [|other]] = Title: Evolution of the main observables in core-collapse supernova events: a radiation-hydrodynamical modelling= Authors: [|M.L. Pumo], [|L. Zampieri] [|arXiv:1109.1775] [[|pdf], [|ps], [|other]] = Title: Radiation hydrodynamics of core-collapse supernovae: the "key" asset for a self-consistent modelling of these events= Authors: [|M.L. Pumo], [|L. Zampieri] [|arXiv:1109.1781] [[|pdf], [|ps], [|other]] = Title: Calibrating hydrogen-rich core-collapse supernovae for their use as distance indicators independently of type Ia supernovae= Authors: [|M.L. Pumo], [|L. Zampieri] [|arXiv:1109.1791] [[|pdf]] = Title: A new radiation-hydrodinamics code to study core-collapse supernova events= Authors: [|M.L. Pumo], [|L. Zampieri] Added by F. Förster

=8 Sep 2011:= [|arXiv:1109.1307] [[|pdf], [|ps], [|other]] = Title: Unveiling Physical Processes in Type Ia Supernovae With a Laue Lens Telescope= Authors: [|Nicolas M. Barrière], [|John A Tomsick], [|Steven E. Boggs], [|Peter von Ballmoos], [|Julien Rousselle] Comments: Proceedings of the 8th INTEGRAL workshop held in Dublin from Sept 27th to 30th 2010 Journal-ref: PoS(INTEGRAL 2010)108 Subjects: Instrumentation and Methods for Astrophysics (astro-ph.IM) We present in this paper a focusing gamma-ray telescope that has only one goal: addressing the true nature of Type Ia Supernovae (SNe Ia). This telescope is based on a Laue lens focusing a 100-keV wide energy band centered on 847 keV, which correspond to a bright line emitted by the decay chain of 56Ni, a radioactive element massively produced during SNe Ia events. Spectroscopy and light curve measurements of this gamma-ray line allow direct measurement of the underlying explosion physics and dynamics, and thus discriminate among the competing models. However reaching this goal the observation of several events with high detection significance, meaning more powerful telescopes. The telescope concept we present in this paper is composed of a Laue lens held 30 m apart from the focal instrument (a compact Compton telescope) by an extensible mast. With a 3-sigma sensitivity of 1.8\times10-6 ph/s/cm2 in the 3%-broadened line at 847 keV (in 1Ms observation time), dozens of SNe Ia could be detected per year out to \sim40 Mpc, enough to perform detailed time-evolved spectroscopy on several events each year. This study took place in the framework of the DUAL mission proposal which was recently submitted to ESA for the third medium class mission of the Cosmic Vision program. Added by F. Förster

[|arXiv:1109.1312] [[|pdf], [|other]] = Title: Type Ia Supernova Carbon Footprints= Authors: [|R. C. Thomas], [|G. Aldering], [|C. Aragon], [|P. Antilogus], [|S. Bailey], [|C. Baltay], [|S. Bongard], [|C. Buton], [|A. Canto], [|M. Childress], [|N. Chotard], [|Y. Copin], [|H. K. Fakhouri], [|E. Gangler], [|E. Y. Hsiao], [|M. Kerschhaggl], [|M. Kowalski], [|S. Loken], [|P. Nugent], [|K. Paech], [|R. Pain], [|E. Pecontal], [|R. Pereira], [|S. Perlmutter], [|D. Rabinowitz], [|M. Rigault], [|D. Rubin], [|K. Runge], [|R. Scalzo], [|G. Smadja], [|C. Tao], [|B. A. Weaver], [|C. Wu], [|P. J. Brown], [|P. A. Milne] Comments: 22 pages, 12 figures. Accepted for publication in The Astrophysical Journal Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO) We present convincing evidence of unburned carbon at photospheric velocities in new observations of 5 Type Ia supernovae (SNe Ia) obtained by the Nearby Supernova Factory. These SNe are identified by examining 346 spectra from 124 SNe obtained before +2.5 d relative to maximum. Detections are based on the presence of relatively strong C II 6580 absorption "notches" in multiple spectra of each SN, aided by automated fitting with the SYNAPPS code. Four of the 5 SNe in question are otherwise spectroscopically unremarkable, with ions and ejection velocities typical of SNe Ia, but spectra of the fifth exhibits high-velocity (v > 20,000 km/s) Si II and Ca II features. On the other hand, the light curve properties are preferentially grouped, strongly suggesting a connection between carbon-positivity and broad band light curve/color behavior: Three of the 5 have relatively narrow light curves but also blue colors, and a fourth may be a dust-reddened member of this family. Accounting for signal-to-noise and phase, we estimate that 22 +10/-6% of SNe Ia exhibit spectroscopic C II signatures as late as -5 d with respect to maximum. We place these new objects in the context of previously recognized carbon-positive SNe Ia, and consider reasonable scenarios seeking to explain a physical connection between light curve properties and the presence of photospheric carbon. We also examine the detailed evolution of the detected carbon signatures and the surrounding wavelength regions to shed light on the distribution of carbon in the ejecta. Our ability to reconstruct the C II 6580 feature in detail under the assumption of purely spherical symmetry casts doubt on a "carbon blobs" hypothesis, but does not rule out all asymmetric models. A low volume filling factor for carbon, combined with line-of-sight effects, seems unlikely to explain the scarcity of detected carbon in SNe Ia by itself. Added by F. Förster

=7 Sep 2011:= [|arXiv:1109.0987] [[|pdf], [|ps], [|other]] = Title: Very Early Ultraviolet and Optical Observations of the Type Ia Supernova 2009ig= Authors: [|Ryan J. Foley], [|P. J. Challis], [|A. V. Filippenko], [|M. Ganeshalingam], [|W. Landsman], [|W. Li], [|G. H. Marion], [|J. M. Silverman], [|R. L. Beaton], [|V. N. Bennert], [|S. B. Cenko], [|M. Childress], [|P. Guhathakurta], [|L. Jiang], [|R. P. Kirshner], [|A. Stockton], [|E. Tollerud], [|J. Vinko], [|J. C. Wheeler], [|J.-H. Woo] Comments: 15 pages, 14 figures, submitted to ApJ Subjects: Solar and Stellar Astrophysics (astro-ph.SR) ; Cosmology and Extragalactic Astrophysics (astro-ph.CO) Supernova (SN) 2009ig was discovered one day after explosion by the Lick Observatory Supernova Search, promptly classified as a normal Type Ia SN (SN Ia), peaked at V = 13.5 mag, and was equatorial, making it one of the foremost supernovae for intensive study in the last decade. Here, we present ultraviolet (UV) and optical observations of SN 2009ig, starting one day after explosion until around maximum brightness. Our data include excellent UV and optical light curves, 25 premaximum optical spectra, and 8 UV spectra, including the earliest UV spectrum ever obtained of a SN Ia. SN 2009ig is a relatively normal SN Ia, but does display high-velocity ejecta - the ejecta velocity measured in our earliest spectra (v ~ -23,000 km/s for Si II 6355) is the highest yet measured in a SN Ia. The spectral evolution is very dramatic at times earlier than 12 d before maximum brightness, but slows after that time. The early-time data provide a precise measurement of 17.14 +/- 0.15 d for the SN rise time. The optical color curves and early-time spectra are significantly different from template light curves and spectra used for light-curve fitting and K-corrections, indicating that the template light curves and spectra do not properly represent all Type Ia supernovae at very early times. In the age of wide-angle sky surveys, SNe like SN 2009ig that are nearby, bright, well positioned, and promptly discovered will still be rare. As shown with SN 2009ig, detailed studies of single events can provide significantly more information for testing systematic uncertainties related to SN Ia distance estimates and constraining progenitor and explosion models than large samples of more distant SNe. Added by F. Förster

[|arXiv:1109.0993] [[|pdf], [|ps], [|other]] = Title: Towards a unified model of stellar rotation= Authors: [|Adrian T. Potter], [|Christopher A. Tout], [|John J. Eldridge] Comments: 14 pages, 11 figures. Accepted for publication in MNRAS Subjects: Solar and Stellar Astrophysics (astro-ph.SR) The effects of rapid rotation on stellar evolution can be profound. We are now beginning to gather enough data to allow a realistic comparison between different physical models. Two key tests for any theory of stellar rotation are first whether it can match observations of the enrichment of nitrogen, and potentially other elements, in clusters containing rapid rotators and secondly whether it can reproduce the observed broadening of the main sequence in the Hertzsprung-Russel diagram. Models of stellar rotation have been steadily increasing in number and complexity over the past two decades but the lack of data makes it difficult to determine whether such additions actually give a closer reflection of reality. One of the most poorly explored features of stellar rotation models is the treatment of angular momentum transport within convective zones. If we treat the core as having uniform specific angular momentum the angular momentum distribution in the star, for a given surface rotation, is dramatically different from what it is when we assume the star rotates as a solid body. The uniform specific angular momentum also generates strong shears which can drive additional transport of chemical elements close to the boundary of a convection zone. A comparison of different models and their reproduction of observable properties with otherwise identical input physics is essential to properly distinguish between them. We compare detailed grids of stellar evolution tracks of intermediate and high-mass stars produced using several models for rotation generated with our new stellar rotation code. Added by F. Förster

=6 Sep 2011:=

=Title: Three-dimensional hydrodynamic simulations of the combustion of a neutron star into a quark star= Authors: Matthias Herzog, Friedrich K. Roepke Categories: astro-ph.HE hep-ph nucl-th Comments: 13 pages, 10 figures. Accepted for publication in Phys. Rev. D We present three-dimensional numerical simulations of turbulent combustion converting a neutron star into a quark star. Hadronic matter, described by a micro-physical finite-temperature equation of state, is converted into strange quark matter. We assume this phase, represented by a bag-model equation of state, to be absolutely stable. Following the example of thermonuclear burning in white dwarfs leading to Type Ia supernovae, we treat the conversion process as a potentially turbulent deflagration. Solving the non-relativistic Euler equations using established numerical methods we conduct large eddy simulations including an elaborate subgrid scale model, while the propagation of the conversion front is modeled with a level-set method. Our results show that for large parts of the parameter space the conversion becomes turbulent and therefore significantly faster than in the laminar case. Despite assuming absolutely stable strange quark matter, in our hydrodynamic approximation an outer layer remains in the hadronic phase, because the conversion front stops when it reaches conditions under which the combustion is no longer exothermic. \\ ( @http://arxiv.org/abs/1109.0539, 3264kb) Added by F. Förster

=Model-Independent Reconstruction of the Expansion History of the Universe from Type Ia Supernovae= Authors: S. Benitez-Herrera, F. Roepke, W. Hillebrandt, C. Mignone, M. Bartelmann, J. Weller Categories: astro-ph.CO Comments: 10 pages, 8 figures, to be published in Montly Notices of the Royal Astronomical Society Based on the largest homogeneously reduced set of Type Ia supernova luminosity data currently available -- the Union2 sample -- we reconstruct the expansion history of the Universe in a model-independent approach. Our method tests the geometry of the Universe directly without reverting to any assumptions made on its energy content. This allows us to constrain Dark Energy models and non-standard cosmologies in a straightforward way. The applicability of the presented method is not restricted to testing cosmological models. It can be a valuable tool for pointing out systematic errors hidden in the supernova data and planning future Type Ia supernova cosmology campaigns. \\ ( @http://arxiv.org/abs/1109.0873, 253kb) Added by F. Förster

=Core-collapse model of broadband emission from SNR RX J1713.7-3946 with thermal X-rays and Gamma-rays from escaping cosmic rays= Authors: Donald C. Ellison, Patrick Slane, Daniel J. Patnaude, and Andrei M. Bykov Categories: astro-ph.HE Comments: 11 pages with 7 figures. Submitted to ApJ We present a spherically symmetric, core-collapse model of SNR RX J1713.7-3946 that includes a hydrodynamic simulation of the remnant evolution coupled to the efficient production of cosmic rays (CRs) by nonlinear diffusive shock acceleration (DSA). High-energy CRs that escape from the forward shock (FS) are propagated in surrounding dense material that simulates either a swept-up, pre-supernova shell or a nearby molecular cloud. The continuum emission from trapped and escaping CRs, along with the thermal X-ray emission from the shocked heated ISM behind the FS, integrated over the remnant, is compared against broadband observations. Our results show conclusively that, overall, the GeV-TeV emission is dominated by inverse-Compton from CR electrons if the supernova is isolated regardless of its type, i.e., not interacting with a >>100 Msun shell or cloud. If the SNR is interacting with a much larger mass >10^4 Msun, pion-decay from the escaping CRs may dominate the TeV emission, although a precise fit at high energy will depend on the still uncertain details of how the highest energy CRs are accelerated by, and escape from, the FS. Based on morphological and other constraints, we consider the 10^4 Msun pion-decay scenario highly unlikely for SNR RX J1713.7-3946 regardless of the details of CR escape. Importantly, even though CR electrons dominate the GeV-TeV emission, the efficient production of CR ions is an essential part of our leptonic model. \\ ( @http://arxiv.org/abs/1109.0874, 146kb) Added by F. Förster

=Photometric selection of Type Ia supernovae in the Supernova Legacy Survey= Authors: G. Bazin, V. Ruhlmann-Kleider, N. Palanque-Delabrouille, J. Rich, E. Aubourg, P. Astier, C. Balland, S. Basa, R. G. Carlberg, A. Conley, D. Fouchez, J. Guy, D. Hardin, I. M. Hook, D. A. Howell, R. Pain, K. Perrett, C. J. Pritchet, N. Regnault, M. Sullivan, N. Fourmanoit, S. Gonzalez-Gaitan, C. Lidman, S. Perlmutter, P. Ripoche, E. S. Walker Categories: astro-ph.CO Comments: (The SNLS collaboration) 23 pages, 28 figures, Accepted in A&A We present a sample of 485 photometrically identified Type Ia supernova candidates mined from the first three years of data of the CFHT SuperNova Legacy Survey (SNLS). The images were submitted to a deferred processing independent of the SNLS real-time detection pipeline. Light curves of all transient events were reconstructed in the g_M, r_M, i_M and z_M filters and submitted to automated sequential cuts in order to identify possible supernovae. Pure noise and long-term variable events were rejected by light curve shape criteria. Type Ia supernova identification relied on event characteristics fitted to their light curves assuming the events to be normal SNe Ia. The light curve fitter SALT2 was used for this purpose, assigning host galaxy photometric redshifts to the tested events. The selected sample of 485 candidates is one magnitude deeper than that allowed by the SNLS spectroscopic identification. The contamination by supernovae of other types is estimated to be 4%. Testing Hubble diagram residuals with this enlarged sample allows us to measure the Malmquist bias due to spectroscopic selections directly. The result is fully consistent with the precise Monte Carlo based estimate used to correct SN Ia distance moduli in the SNLS 3-year cosmological analyses. This paper demonstrates the feasibility of a photometric selection of high redshift supernovae with known host galaxy redshifts, opening interesting prospects for cosmological analyses from future large photometric SN Ia surveys. \\ ( @http://arxiv.org/abs/1109.0948, 438kb) Added by F. Förster

=Very Early Photometry of SN 1998S: Physical Parameters and Date of Explosion= Authors: H. Poon, J. C. S. Pun, T. Y. Lam, Y. L. Qiu, and J. Y. Wei Categories: astro-ph.CO Comments: 6 pages, 8 figures Context. We present very early optical lightcurves beginning 10 days before maximum of the Type IIn supernova 1998S, covering the first four months after discovery. Aims. We examine the light evolution and try to compare the lightcurves to two analytical models(Nakar & Sari(2010) and Rabinak & Waxman(2011)) for a red supergiant star. Methods. The photometry was carried at the 60-cm telescope of the Xinglong Station of China. Broadband filters Johnsons B, V and Cousins R were used. Results. The magnitude rose for the first few days and then dropped slowly afterwards. The two di?erent models we use can fit the early lightcurves very well. The explosion date derived from the models is within the range of 1998 March 1.34 - 2.64(JD 2450873.84 - JD 2450875.14.) The radius of the progenitor is found to be ~ 300 Rsun and ~ 2000 Rsun for the model of Nakar & Sari(2010) and Rabinak & Waxman(2011) respectively. The constraint on mass and energy is not strong. The ranges of these two parameters are within that of a red supergiant. \\ ( @http://arxiv.org/abs/1109.0899, 52kb) Added by F. Förster

=Swift Observations of X-ray supernovae= Authors: K.L. Li and Chun.S.J. Pun Categories: astro-ph.HE We present a result of X-ray supernovae (SNe) survey using the Swift satellite public archive. An automatic searching program was designed to search X-ray SNe among all of the Swift archival observations between November 2004 and February 2011. Using the C++ program, 24 X-ray detectable supernovae have been found in the archive and 3 of them were newly-discovered in X-rays which are SN 1986L, SN 2003lx, and SN 2007od. In addition, SN 2003lx is a Type Ia supernova which may be the second X-ray detectable Type Ia after SN 2005ke (Immler et al. 2006). Calibrated data of luminous type Ib/c supernovae was consistent to the X-ray emission model done by Chevalier & Fransson (1994). Statistics about the luminosities and hardness ratio have been done to purpose of getting the X-ray emission features of the X-ray supernovae. The results from this work help investigating the X-ray evolution of SNe and developing similar X-ray SNe surveys in various X-rays missions. \\ ( @http://arxiv.org/abs/1109.0981, 370kb) Added by F. Förster

=Detections of X-ray emissions from Type Ia Supernova 2003lx= Authors: K.L. Li and Chun.S.J. Pun Categories: astro-ph.HE We present a study of a young (few years old) supernova remnant 2003lx which was first discovered in X-ray through two serendipitous Swift observations in 2008 January and the corresponding merged image revealed a 7\sigma source detection at $2.1\pm1.2$ arcsec (0.9 +/- 0.5 Swift pixels) from the optical position of the supernova. The X-ray luminosity $L_x = 4.8_{-1.7}^{+1.8} \times 10^{41} erg/s of band 0.3 - 2.0 keV is estimated by a redshift z = 0.0377 power law which can infer a companion star with a mass-loss rate of \dot{M} ~ 10^{-4} M_\sun per year (with assumption of wind velocity v_w = 10 km/s) in the white dwarf binary system. Thermal Model fitting suggests the temperature of the shock wave front is kT ~ 0.4 keV which is consistent with the typical reverse shock temperate. The X-ray emission allows us to probe the interaction between the fast moving debris of the exploded star and the circumstellar medium (CSM). This in turns provides footprints of the mass-loss history of the exploded system, and may allow us to learn about the nature of the progenitor and its companion. \\ ( @http://arxiv.org/abs/1109.0982, 600kb) Added by F. Förster

=2 Sep 2011:= [|arXiv:1109.0005] [[|pdf], [|ps], [|other]] = Title: The link between the Star Formation History and [alpha/Fe]= Authors: [|Ignacio G. de la Rosa] (1), [|Francesco La Barbera] (2), [|Ignacio Ferreras] (3), [|Reinaldo de Carvalho] (4) ((1) IAC and UCL, (2) Naples, (3) MSSL/UCL, (4) INPE) Comments: 5 pages, 2 figures. Accepted for publication in MNRAS Letters Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO) (Abridged) The abundance ratios between key elements such as iron and alpha-process elements carry a wealth of information on the star formation history (SFH) of galaxies. So far, simple chemical evolution models have linked [alpha/Fe] with the SFH timescale, correlating large abundance ratios with short-lived SFH. We provide an empirical correlation between [alpha/Fe] (measured from spectral indices) and the SFH (determined via a non-parametric spectral-fitting method). We offer an empirical version of the iconic outline of Thomas et al. (2005), relating star formation timescale with galaxy mass, although our results suggest, in contrast, a significant population of old (>10Gyr) stars even for the lowest mass ellipticals. In addition, the abundance ratio is found to be strongly correlated with the time to build up the stellar component, showing that the highest [alpha/Fe] (>+0.2) are attained by galaxies with the shortest half-mass formation time (<2Gyr), or equivalently, with the smallest (<40%) fraction of populations younger than 10Gyr. These observational results support the standard hypothesis that star formation incorporates the Fe-enriched interstellar medium into stars, lowering the high abundance ratio of the old populations. Added by F. Förster (alpha/Fe evolution is a consequence of SN chemical enrichment)

[|arXiv:1109.0065] [[|pdf], [|ps], [|other]] = Title: The 2011 Eruption of the Recurrent Nova T Pyxidis; the Discovery, the Pre-eruption Rise, the Pre-eruption Orbital Period, and the Reason for the Long Delay= Authors: [|Bradley E. Schaefer], [|Arlo U. Landolt], [|Michael Linnolt], [|Rod Stubbings], [|Grzegorz Pojmanski], [|Alan Plummer], [|Stephen Kerr], [|Peter Nelson], [|Rolf Carstens], [|Margaret Streamer], [|Thomas Richards], [|Gordon Myers], [|William G. Dillon] Comments: ApJ submitted, 39 pages, 4 figures Subjects: Solar and Stellar Astrophysics (astro-ph.SR) We report the discovery by M. Linnolt on JD 245[|5665.7931] (UT 2011 April 14.29) of the sixth eruption of the recurrent nova T Pyxidis. This discovery was made just as the initial fast rise was starting, so with fast notification and response by observers worldwide, the entire initial rise was covered (the first for any nova) with fine time resolution and in three filters. The speed of the rise peaked at 9 mag/day, while the light curve is well fit over only the first two days by a model with a uniformly expanding sphere. We also report the discovery by R. Stubbings of a pre-eruption rise starting 11 days before the eruption, peaking 1.1 mag brighter than its long-time average, and then fading back towards quiescence five days before the eruption. This unique and mysterious behavior is only the fourth known anticipatory rise/dip closely spaced before a nova eruption. We present 19 timings of photometric minima from 1986 to February 2011, where the orbital period is fast increasing with P/Pdot=+313,000 years. From 2008-2011, T Pyx had a small change in this rate of increase, so that the orbital period at the time of eruption was 0.07622916+-0.00000008 days. This strong and steady increase of the orbital period can only come from mass transfer, for which we calculate a rate of 10^{-6.0+-0.5} Msun/yr for mass leaving the companion star. We report 6114 magnitudes between 1890 and 2011, for an average B=15.59+-0.01 from 1967-2011, which allows for an eruption in 2011 if the blue flux is nearly proportional to the accretion rate. We present a model for the infrared-to-X-ray emission during quiescence as being from a 34,000 K blackbody nearly filling the Roche lobe (caused by the very high accretion rate creating an extended envelope around the accretion column) plus a nu^0.9 non-thermal component (from the optically-thin outer and circumbinary regions). Adde by F. Förster (RNe are possible SN Ia progenitors)

[|arXiv:1109.0204] [[|pdf], [|ps], [|other]] = Title: Time Evolution of the Reverse Shock in SN 1006= Authors: [|P. Frank Winkler], [|Andrew J. S. Hamilton], [|Knox S. Long], [|Robert A. Fesen] Comments: 8 pages, includes 5 figures Subjects: Galaxy Astrophysics (astro-ph.GA) ; High Energy Astrophysical Phenomena (astro-ph.HE) The Schweizer-Middleditch star, located behind the SN 1006 remnant and near its center in projection, provides the opportunity to study cold, expanding ejecta within the SN 1006 shell through UV absorption. Especially notable is an extremely sharp red edge to the Si II 1260 Angstrom feature, which stems from the fastest moving ejecta on the far side of the SN 1006 shell--material that is just encountering the reverse shock. Comparing HST far-UV spectra obtained with COS in 2010 and with STIS in 1999, we have measured the change in this feature over the intervening 10.5-year baseline. We find that the sharp red edge of the Si II feature has shifted blueward by 0.19 +/- 0.05 Angstroms, which means that the material hitting the reverse shock in 2010 was moving slower by 44 +/- 11 km/s than the material that was hitting it in 1999, a change corresponding to - 4.2 +/- 1.0 km/s/yr. This is the first observational confirmation of a long-predicted dynamic effect for a reverse shock: that the shock will work its way inward through expanding supernova ejecta and encounter ever slower material as it proceeds. We also find that the column density of shocked Si II (material that has passed through the reverse shock) has decreased by 7 +/- 2% over the ten-year period. The decrease could indicate that in this direction the reverse shock has been ploughing through a dense clump of Si,leading to pressure and density transients. Added by F. Förster

=1 Sep 2011:= [|arXiv:1108.6056] [[|pdf], [|ps], [|other]] = Title: What is the Most Promising Electromagnetic Counterpart of a Neutron Star Binary Merger?= Authors: [|Brian D. Metzger], [|Edo Berger] Comments: 16 pages, 9 figures, 3 tables, submitted to ApJ Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) ; General Relativity and Quantum Cosmology (gr-qc) The final inspiral of double neutron star and neutron star-black hole binaries are likely to be detected by advanced networks of ground-based gravitational wave (GW) interferometers. Maximizing the science returns from such a discovery will require the identification and localization of an electromagnetic (EM) counterpart. Here we critically evaluate and compare several possible counterparts, including short-duration gamma-ray bursts (SGRBs), "orphan" optical and radio afterglows, and ~day-long optical transients powered by the radioactive decay of heavy nuclei synthesized in the merger ejecta ("kilonovae"). We assess the promise of each counterpart in terms of four "Cardinal Virtues": detectability, high fraction, identifiability, and positional accuracy. Taking into account the search strategy for typical error regions of ~10s degs sq., we conclude that SGRBs are the most useful to confirm the cosmic origin of a few GW events, and to test the association with NS mergers. However, for the more ambitious goal of localizing and obtaining redshifts for a large sample of GW events, kilonovae are instead preferred. Off-axis optical afterglows will be detectable for at most ~10% of all events, while radio afterglows are promising only for the unique combination of energetic relativistic ejecta in a high density medium, and even then will require hundreds of hours of EVLA time per event. Our main recommendations are:(i) an all-sky gamma-ray satellite is essential for temporal coincidence detections, and for GW searches of gamma-ray triggered events; (ii) LSST should adopt a 1-day cadence follow-up strategy, ideally with ~0.5 hr per pointing to cover GW error regions (the standard 4-day cadence and depth will severely limit the probability of a unique identification); and (iii) radio searches should only focus on the relativistic case, which requires observations for a few months. Added by F. Förster (NS binary mergers are associated to short duration GRBs)

[|arXiv:1108.6058] [[|pdf], [|ps], [|other]] = Title: The stellar masses and specific star-formation rates of submillimetre galaxies= Authors: [|Michał J. Michałowski] (1), [|James S. Dunlop] (1), [|Michele Cirasuolo] (1), [|Jens Hjorth] (2), [|Christopher C. Hayward] (3), [|Darach Watson] (2) ((1) IfA Edinburgh, (2) DARK Copenhagen, (3) CfA, Harvard) Comments: Resubmitted to A&amp;A after responding to referee's comments. 12 pages, 4 figures, 2 tables. Comments welcome Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO) Establishing the stellar masses (M*), and hence specific star-formation rates (sSFRs) of submillimetre galaxies (SMGs) is crucial for determining their role in the cosmic history of galaxy/star formation. However, there is no consensus over the typical M* of SMGs with the widely differing results reported from studies of z~2-3 SMGs. Specifically, even for the same set of SMG, the reported average M* have ranged over an order of magnitude, from 5x10^10 Mo to 5x10^11 Mo. Here we study how different methods of analysis can lead to such widely varying results. We find that, contrary to recent claims in the literature, potential contamination of 3-8um photometry from hot dust associated with an active nucleus is not the origin of the discrepancies in derived M*. Instead, we expose in detail how inferred M* depends on assumptions of intial mass function, different evolutionary synthesis models, and different star-formation histories. We review current observational evidence for and against these alternatives as well as clues from the hydrodynamical simulations, and conclude that, for the most justifiable choices of these model inputs, the average M* of luminous (S_850>5 mJy) SMG is 2x10^11 Mo. We also check and confirm that this number is perfectly reasonable in the light of the latest measurements of their dynamical masses (2-6x10^11 Mo from CO(1-0) observations), and the evolving M* function of the overall galaxy population. Stellar masses of this order imply that the average sSFR of SMG is comparable to that of other star-forming galaxies at z>2, at 2-3 Gyr^-1. This supports the view that, while rare outliers may be found at any M*, most SMG simply form the top end of the main-sequence of star-forming galaxies at these redshifts. Conversely, this argues strongly against the viewpoint that SMG are extreme pathological objects, of little relevance in the cosmic history of star-formation. Added by F. Förster (relevant for understanding the cosmic star formation history, which can be compared to the cosmic SN rate)

[|arXiv:1108.6168] [[|pdf], [|ps], [|other]] = Title: White Dwarf Model Atmospheres: Synthetic Spectra for Super Soft Sources= Authors: [|Thomas Rauch] Comments: 4 pages, 2 figures Subjects: Solar and Stellar Astrophysics (astro-ph.SR) The T\"ubingen NLTE Model-Atmosphere Package (TMAP) calculates fully metal-line blanketed white dwarf model atmospheres and spectral energy distributions (SEDs) at a high level of sophistication. Such SEDs are easily accessible via the German Astrophysical Virtual Observatory (GAVO) service TheoSSA. We discuss applications of TMAP models to (pre) white dwarfs during the hottest stages of their stellar evolution, e.g. in the parameter range of novae and super soft sources. Added by F. Förster (SSS are possible Type Ia SN progenitors)

[|arXiv:1108.6285] [[|pdf], [|ps], [|other]] = Title: Neutrinos and core-collapse supernovae= Authors: [|Cristina Volpe] Comments: 10 pages, 5 figures, Proceedings for the XIV International Workshop on "Neutrino Telescopes", March 15-18, 2011, Venice Subjects: Solar and Stellar Astrophysics (astro-ph.SR) ; High Energy Physics - Phenomenology (hep-ph) We discuss the recent progress in our understanding of neutrino flavour conversion in core-collapse supernovae and focus on the effects coming from the neutrino-neutrino interaction. The latter has been shown to engender new phenomena, modifying significantly the neutrino fluxes and supernova observations. In particular, we make the link between the spectral split and the magnetic resonance phenomenon. Moreover, recent investigations have demonstrated the existence of leptonic CP violation effects on the supernova neutrino fluxes. We summarize these findings. Added by F. Förster

=Publications from Aug 2011=  [|arXiv:1108.6058] [[|pdf], [|ps], [|other]]  Title: The stellar masses and specific star-formation rates of submillimetre galaxies  Authors: [|Michał J. Michałowski] (1), [|James S. Dunlop] (1), [|Michele Cirasuolo] (1), [|Jens Hjorth] (2), [|Christopher C. Hayward] (3), [|Darach Watson] (2) ((1) IfA Edinburgh, (2) DARK Copenhagen, (3) CfA, Harvard)  Comments: Resubmitted to A&amp;A after responding to referee's comments. 12 pages, 4 figures, 2 tables. Comments welcome  Subjects: Cosmology and Extragalactic Astrophysics (astro-ph.CO) Establishing the stellar masses (M*), and hence specific star-formation rates (sSFRs) of submillimetre galaxies (SMGs) is crucial for determining their role in the cosmic history of galaxy/star formation. However, there is no consensus over the typical M* of SMGs with the widely differing results reported from studies of z~2-3 SMGs. Specifically, even for the same set of SMG, the reported average M* have ranged over an order of magnitude, from 5x10^10 Mo to 5x10^11 Mo. Here we study how different methods of analysis can lead to such widely varying results. We find that, contrary to recent claims in the literature, potential contamination of 3-8um photometry from hot dust associated with an active nucleus is not the origin of the discrepancies in derived M*. Instead, we expose in detail how inferred M* depends on assumptions of intial mass function, different evolutionary synthesis models, and different star-formation histories. We review current observational evidence for and against these alternatives as well as clues from the hydrodynamical simulations, and conclude that, for the most justifiable choices of these model inputs, the average M* of luminous (S_850>5 mJy) SMG is 2x10^11 Mo. We also check and confirm that this number is perfectly reasonable in the light of the latest measurements of their dynamical masses (2-6x10^11 Mo from CO(1-0) observations), and the evolving M* function of the overall galaxy population. Stellar masses of this order imply that the average sSFR of SMG is comparable to that of other star-forming galaxies at z>2, at 2-3 Gyr^-1. This supports the view that, while rare outliers may be found at any M*, most SMG simply form the top end of the main-sequence of star-forming galaxies at these redshifts. Conversely, this argues strongly against the viewpoint that SMG are extreme pathological objects, of little relevance in the cosmic history of star-formation.