A model for multidimensional delayed detonations in SN Ia explosions

Free access article

Issue		A&A Volume 438, Number 2, August I 2005


Page(s)		611 - 616
Section		Stellar structure and evolution
DOI		http://dx.doi.org/10.1051/0004-6361:20042402

A&A 438, 611-616 (2005)
DOI: 10.1051/0004-6361:20042402

A model for multidimensional delayed detonations in SN Ia explosions

I. Golombek and J. C. Niemeyer

Lehrstuhl für Astronomie, Universität Würzburg, Am Hubland, 97074 Würzburg, Germany

(Received 22 November 2004 / Accepted 16 February 2005)

Abstract
We show that a flame tracking/capturing scheme originally developed for deflagration fronts can be used to model thermonuclear detonations in multidimensional explosion simulations of type Ia supernovae. After testing the accuracy of the front model, we present a set of two-dimensional simulations of delayed detonations with a physically motivated off-center deflagration-detonation-transition point. Furthermore, we demonstrate the ability of the front model to reproduce the full range of possible interactions of the detonation with clumps of burned material. This feature is crucial for assessing the viability of the delayed detonation scenario.

Key words: stars: supernovae: general -- hydrodynamics -- methods: numerical

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