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Issue A&A
Volume 451, Number 1, May III 2006
Page(s) 207 - 212
Section Stellar structure and evolution
DOI http://dx.doi.org/10.1051/0004-6361:20054094

A&A 451, 207-212 (2006)
DOI: 10.1051/0004-6361:20054094

C+O detonations in thermonuclear supernovae: interaction with previously burned material

A. Maier and J. C. Niemeyer

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

(Received 23 August 2005 / Accepted 29 December 2005 )

Abstract
In the context of explosion models for type Ia Supernovae, we present one- and two-dimensional simulations of fully resolved detonation fronts in degenerate C+O White Dwarf matter including clumps of previously burned material. The ability of detonations to survive the passage through sheets of nuclear ashes is tested as a function of the width and composition of the ash region. We show that detonation fronts are quenched by microscopically thin obstacles with little sensitivity to the exact ash composition. Front-tracking models for detonations in macroscopic explosion simulations need to include this effect in order to predict the amount of unburned material in delayed detonation scenarios.


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





© ESO 2006


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