Cosmic ray acceleration at oblique shocks

被引：81
作者：
Bell, A. R. [1 ]
Schure, K. M. [1 ]
Reville, B. [1 ]
机构：
[1] Univ Oxford, Clarendon Lab, Oxford OX1 3PU, England
来源：
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2011年 / 418卷 / 02期
基金：
欧洲研究理事会;
关键词：
acceleration of particles; shock waves; cosmic rays; ISM: supernova remnants; SUPERNOVA REMNANT; PARTICLE-ACCELERATION; SYNCHROTRON SPECTRUM; MAGNETIC-FIELDS; RADIO REMNANT; FLUX-DENSITY; SN; 1987A; EMISSION; AMPLIFICATION; TRANSPORT;
D O I：
10.1111/j.1365-2966.2011.19571.x
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We show that the diffusion approximation breaks down for particle acceleration at oblique shocks with velocities typical of young supernova remnants. Higher order anisotropies flatten the spectral index at quasi-parallel shocks and steepen the spectral index at quasi-perpendicular shocks. We compare the theory with observed spectral indices.
引用
收藏
页码：1208 / 1216
页数：9
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