Type Ia supernovae from sub-chandrasekhar mass white dwarfs

Stuart A. Sim*, Friedrich K. Röpke, Markus Kromer, Michael Fink, Ashley J. Ruiter, Ivo R. Seitenzahl, Rüdiger Pakmor, Wolfgang Hillebrandt

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution


We argue that detonations of sub-Chandrasekhar mass white dwarfs can lead to bright explosions with light curves and spectra similar to those of observed Type Ia supernovae. Given that binary systems containing accreting sub-Chandrasekhar mass white dwarfs should be common, this suggests that a non-negligible fraction of the observed Type Ia supernova rate may arise from sub-Chandrasekhar mass explosions, if they can be ignited. We discuss aspects of how such explosions might be realized in nature and both merits and challenges associated with invoking sub-Chandrasekhar mass explosion models to account for observed Type Ia supernovae.

Original languageEnglish
Title of host publicationBinary Paths to Type Ia Supernovae Explosions
PublisherReader, Cambridge University Press
Number of pages8
ISBN (Print)9781107019812
Publication statusPublished - 17 Jan 2013
Externally publishedYes

Publication series

NameProceedings of the International Astronomical Union
ISSN (Print)1743-9213
ISSN (Electronic)1743-9221


  • Hydrodynamics - radiative transfer - methods: numerical - stars: supernovae
  • White dwarfs

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science


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