Core-Collapse Supernovae: Magnetorotational Explosions and Jet Formation

被引：4

作者：

Bisnovatyi-Kogan, G. S. ^{[1
,2
]}

Moiseenko, S. G. ^{[1
]}

机构：

[1] Space Res Inst RAS, Moscow, Russia

[2] Joint Inst Nucl Res, Dubna 141980, Russia

来源：

PHYSICS OF PARTICLES AND NUCLEI | 2008年 / 39卷 / 07期

基金：

俄罗斯基础研究基金会;

关键词：

97.60.Bw;

D O I：

10.1134/S1063779608070289

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

Core-collapse supernovae are accompanied by formation of neutron stars. The gravitational energy is transformed into the energy of the explosion, observed as SN II, SN Ib, c type supernovae. We present results of 2D MHD simulations, where the source of energy is rotation and the magnetic field serves as a "transition belt" for the transformation of the rotation energy into the energy of the explosion. The toroidal part of the magnetic energy initially grows linearly with time due to differential rotation. When the twisted toroidal component strongly exceeds the poloidal field, magneto-rotational instability develops, leading to a drastic acceleration in the growth of magnetic energy. Finally, a fast MHD shock is formed, producing a supernova explosion. A mildly collimated jet is produced for the dipolelike type of the initial field.

引用

页码：1128 / 1135

页数：8