Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

SN Ia progenitors

  1. Feb 26, 2013 #1


    User Avatar
    Science Advisor
    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.
  2. jcsd
  3. Feb 26, 2013 #2


    User Avatar
    Staff Emeritus
    Science Advisor

    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

    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

    Review: Ia progenitors

    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

    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

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

    and - SPY — The ESO Supernovae Type Ia Progenitor Survey
    Last edited by a moderator: May 6, 2017
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook