Acceleration time-scale in an ultrarelativistic shock

被引：7

作者：

Bednarz, J ^{[1
]}

机构：

[1] Uniwersytet Jagiellonski, Obserwatorium Astron, PL-30244 Krakow, Poland

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2000年 / 315卷 / 03期

关键词：

acceleration of particles; shock waves; cosmic rays; gamma-rays : bursts;

D O I：

10.1046/j.1365-8711.2000.03681.x

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The acceleration mechanism in ultrarelativistic shocks is investigated using Monte Carlo simulations. We apply a method of discrete small-amplitude particle momentum scattering to reproduce highly anisotropic conditions at the shock and describe the acceleration mechanism carefully. The obtained acceleration time equals 1.0r(g)/c if the spectral index reaches the value of 2.2, independent of physical conditions in the shock. Some other parameters of the acceleration process are also provided.

引用

页码：L37 / L40

页数：4

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