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Thermonuclear Supernova Explosions from White Dwarfs in Different Progenitor Systems

Published online by Cambridge University Press:  17 January 2013

F. K. Röpke ,
S. A. Sim ,
M. Fink ,
R. Pakmor ,
M. Kromer ,
I. R. Seitenzahl ,
A. J. Ruiter  and
W. Hillebrandt
F. K. Röpke*
Affiliation:
Universität Würzburg, Emil-Fischer-Str. 31, D-97074 Würzburg, Germany Max-Planck-Institut für Astrophysik, Karl-Schwarzschild-Str. 1, D-85748 Garching, Germany
S. A. Sim
Affiliation:
Research School of Astronomy and Astrophysics, Mount Stromlo Observatory, Cotter Road, Weston Creek, ACT 2611, Australia
M. Fink
Affiliation:
Universität Würzburg, Emil-Fischer-Str. 31, D-97074 Würzburg, Germany Max-Planck-Institut für Astrophysik, Karl-Schwarzschild-Str. 1, D-85748 Garching, Germany
R. Pakmor
Affiliation:
Heidelberger Institut für Theoretische Studien, Schloss-Wolfsbrunnenweg 35, D-69118 Heidelberg, Germany
M. Kromer
Affiliation:
Universität Würzburg, Emil-Fischer-Str. 31, D-97074 Würzburg, Germany
I. R. Seitenzahl
Affiliation:
Universität Würzburg, Emil-Fischer-Str. 31, D-97074 Würzburg, Germany Max-Planck-Institut für Astrophysik, Karl-Schwarzschild-Str. 1, D-85748 Garching, Germany
A. J. Ruiter
Affiliation:
Max-Planck-Institut für Astrophysik, Karl-Schwarzschild-Str. 1, D-85748 Garching, Germany
W. Hillebrandt
Affiliation:
Max-Planck-Institut für Astrophysik, Karl-Schwarzschild-Str. 1, D-85748 Garching, Germany
*
†email: fritz@mpa-garching.mpg.de
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Abstract

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Several progenitor scenarios have been suggested for Type Ia supernovae. Here we discuss the consequences for the explosion mechanism and for observables of some of them, which are explored by means of multi-dimensional hydrodynamic and radiation transfer simulations. While the observables predicted from delayed detonations of Chandrasekhar-mass white dwarfs agree reasonably well with the data, the corresponding progenitor systems may be too rare to account for the observed rate of Type Ia supernovae. Several alternatives are investigated of which violent mergers of two white dwarfs and, perhaps, double detonations of sub-Chandrasekhar mass white dwarfs hold promise for reproducing the observables of normal Type Ia supernovae.

Keywords

hydrodynamics — methods: numerical — stars: supernovaewhite dwarfs
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 7 , Issue S281: Binary Paths to Type Ia Supernovae Explosions , July 2011 , pp. 261 - 266
Copyright
Copyright © International Astronomical Union 2013

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