Modeling the Diversity of Type Ia Supernova Explosions

Details Modeling the Diversity of Type Ia Supernova Explosions Modeling the Diversity of Type Ia Supernova Explosions

2010-02-12

arxiv.org/abs/1002.2505v1

Astronomy and Astrophysics

Astrophysics

Solar and Stellar Astrophysics

6 pages, ASTRONUM-2009 "Numerical Modeling of Space Plasma Flows", Chamonix, France, July 2009, to appear in ASP Conf. Proc

Scientific paper

Type Ia supernovae (SNe Ia) are a prime tool in observational cosmology. A relation between their peak luminosities and the shapes of their light curves allows to infer their intrinsic luminosities and to use them as distance indicators. This relation has been established empirically. However, a theoretical understanding is necessary in order to get a handle on the systematics in SN Ia cosmology. Here, a model reproducing the observed diversity of normal SNe Ia is presented. The challenge in the numerical implementation arises from the vast range of scales involved in the physical mechanism. Simulating the supernova on scales of the exploding white dwarf requires specific models of the microphysics involved in the thermonuclear combustion process. Such techniques are discussed and results of simulations are presented.

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