Are gamma-ray burst shocks mediated by the Weibel instability?

被引：78

作者：

Lyubarsky, Yuri ^{[1
]}

Eichler, David ^{[1
]}

机构：

[1] Ben Gurion Univ Negev, Dept Phys, IL-84105 Beer Sheva, Israel

来源：

ASTROPHYSICAL JOURNAL | 2006年 / 647卷 / 02期

关键词：

gamma rays : bursts; instabilities; magnetic fields; plasmas; shock waves;

D O I：

10.1086/505523

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

It is estimated that the Weibel instability is not generally an effective mechanism for generating ultrarelativistic astrophysical shocks. Even if the upstream magnetic field is as low as in the interstellar medium, the shock is mediated not by the Weibel instability but by the Larmor rotation of protons in the background magnetic field. Future simulations should be able to verify or falsify our conclusion.

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页码：1250 / 1254

页数：5

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