Turbulent amplification of magnetic field and diffusive shock acceleration of cosmic rays

被引：904

作者：

Bell, AR ^{[1
]}

机构：

[1] Univ London Imperial Coll Sci Technol & Med, Blackett Lab, London SW7 2AZ, England

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2004年 / 353卷 / 02期

关键词：

acceleration of particles; magnetic fields; plasmas; shock waves; turbulence; cosmic rays;

D O I：

10.1111/j.1365-2966.2004.08097.x

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The diffusive shock acceleration of cosmic rays by supernova remnants depends upon the generation of magnetic fluctuations by cosmic rays upstream of the shock. Strongly driven, non-resonant, nearly purely growing modes grow more rapidly than the resonant Alfven waves usually considered. Non-linear simulation shows that the magnetic field can be amplified from its seed value by orders of magnitude. The consequences for the maximum attainable cosmic ray energy in supernova remnants are explored.

引用

页码：550 / 558

页数：9

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