Convection and off-center ignition in type Ia supernovae

被引：43

作者：

Wunsch, S ^{[1
]}

Woosley, SE

机构：

[1] Sandia Natl Labs, Combust Res Facil, Livermore, CA 94551 USA

[2] Univ Calif Santa Cruz, Dept Astron & Astrophys, Santa Cruz, CA 95064 USA

来源：

ASTROPHYSICAL JOURNAL | 2004年 / 616卷 / 02期

关键词：

hydrodynamics; supernovae : general;

D O I：

10.1086/425116

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The turbulent convection that takes place in a Chandrasekhar-mass white dwarf during the final few minutes before it explodes determines where and how frequently it ignites. Numerical simulations have shown that the properties of the subsequent Type Ia supernova are sensitive to these ignition conditions. A heuristic model of the turbulent convection is explored. The results suggest that supernova ignition is likely to occur at a radius of order 100 km, rather than at the center of the star.

引用

页码：1102 / 1108

页数：7

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