MICROSCOPIC INSTABILITIES OF NUCLEAR FLAMES IN TYPE IA SUPERNOVAE

被引：62

作者：

NIEMEYER, JC ^{[1
]}

HILLEBRANDT, W ^{[1
]}

机构：

[1] MAX PLANCK INST ASTROPHYS,D-85740 GARCHING,GERMANY

来源：

ASTROPHYSICAL JOURNAL | 1995年 / 452卷 / 02期

关键词：

HYDRODYNAMICS; INSTABILITIES; METHODS; NUMERICAL; STARS; INTERIORS; SUPERNOVAE; GENERAL;

D O I：

10.1086/176346

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Hydrodynamic instabilities on microscopic scales in Type Ia supernovae are studied by means of two-dimensional numerical simulations. We call attention to the fact that on linear scales not much larger than the width of the burning front, the Landau-Darrieus instability leads to a growth of perturbations, thereby wrinkling the flame and increasing its surface area. It is expected that this instability will accelerate the front on small scales beyond its laminary velocity, although the effect is not apparent in the results of the simulations. A brief discussion of the instability in the nonlinear regime, which was not reached in our numerical experiments, is also given.

引用

页码：779 / 784

页数：6