Thermal particle injection in nonlinear diffusive shock acceleration

被引：0
|
作者：
Ellison, Donald C. [1 ]
Blasi, Pasquale [1 ]
Gabici, Stefano [1 ]
机构：
[1] N Carolina State Univ, Dept Phys, Raleigh, NC 27695 USA
来源：
Proceedings of the 29th International Cosmic Ray Conference, Vol 3: OG1 | 2005年
关键词：
D O I：
暂无
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Particle acceleration in collisionless astrophysical shocks, i.e., diffusive shock acceleration (DSA), is the most likely mechanism for producing cosmic rays, at least below 10(15) eV. Despite the success of this theory, several key elements, including the injection of thermal particles, remains poorly understood. We investigate injection in strongly nonlinear shocks by comparing a semi-analytic model of DSA with a Monte Carlo model. These two models treat injection quite differently and we show, for a particular set of parameters, how these differences influence the overall acceleration efficiency and the shape of the broad-band distribution function.
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页码：261 / 264
页数：4
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