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SN Ia progenitors

  1. Feb 26, 2013 #1

    Chronos

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    Gold Member

    Just an opinion. I increasingly favor the double degeneracy model for SN Ia. The occurence frequency looks about right, and we have hardly any confirmed companion stars for most SN Ia. While most SN Ia are too distant to have much chance of detecting a companion star, it is also true of [the admittedly few] nearby SN Ia over the last millenium. One problem I see with double degeneracy is energy released appears less constant than in the accretion model. On the other hand, we have plenty of irregular SN Ia, which suggests multiple modes. That seems reasonable. Curious what others think.
     
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  3. Feb 26, 2013 #2

    Astronuc

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    Staff: Mentor

    It seems to be on the minds of many recently.

    Normal Type Ia supernovae from violent mergers of white dwarf binaries
    Authors: R. Pakmor, M. Kromer, S. Taubenberger, S. A. Sim, F. K. Roepke, W. Hillebrandt
    http://arxiv.org/pdf/1201.5123.pdf

    On the brightness distribution of Type Ia supernovae from violent white dwarf mergers
    A. J. Ruiter, S. A. Sim, R. Pakmor, M. Kromer, I. R. Seitenzahl, K. Belczynski, M. Fink, M. Herzog, W. Hillebrandt, F. K. Röpke and S. Taubenberger
    http://mnras.oxfordjournals.org/content/429/2/1425.full.pdf

    http://www.astro.caltech.edu/~eran/Fireworks2011/Program.html
    Review: Ia progenitors
    http://www.astro.caltech.edu/~eran/Fireworks2011/Talks/podsiadlowski.pdf

    Some constraints on the lower mass limit for double-degenerate progenitors of Type Ia supernovae
    Authors: Xuefei Chen, Jeffery C. Simon, Xianfei Zhang, Zhanwen Han
    http://arxiv.org/pdf/1207.2519.pdf

    Illuminating the progenitors of Type Ia supernovae with supernova rates
    Kyle Barbary, Lawrence Berkeley Lab, 17 January 2012
    http://astro.fnal.gov/events/Seminars/Slides/Barbary_FCPA_17Jan2012.pdf [Broken]

    Spectral analysis of weirdo SNe Ia – sub- and superluminous
    S. Hachinger, P. A. Mazzali, S. Taubenberger, R. Pakmor, W. Hillebrandt and others
    http://www.lorentzcenter.nl/lc/web/2010/391/presentations/Hachinger.pdf

    Some additional publications - http://www.mpa-garching.mpg.de/~fritz/publications/publications.html


    and - SPY — The ESO Supernovae Type Ia Progenitor Survey
    http://www.eso.org/sci/publications/messenger/archive/no.112-jun03/messenger-no112-25-30.pdf
     
    Last edited by a moderator: May 6, 2017
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