Particle shock acceleration in astrophysics

被引：1

作者：

Meli, Athina ^{[1
]}

Mastichiadis, Apostolos ^{[1
]}

机构：

[1] Natl Tech Univ Athens, Dept Phys, Zografos 15783, Greece

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2008年 / 588卷 / 1-2期

关键词：

cosmic rays; shock; fermi mechanism; acceleration;

D O I：

10.1016/j.nima.2008.01.038

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

The Fermi (diffusive) particle acceleration in astrophysical shocks is reviewed and evaluated. We discuss their properties and we present Monte Carlo simulations studying the shocks' efficiency in accelerating particles (i.e. protons) up to very high energies with an application to astrophysical regions such as Supernovae, Active Galactic Nuclei hot spots and Gamma Ray Bursts. We find that the efficiency of the acceleration mechanism at shocks, varies in regard to the inclination of the magnetic field and the shock normal (e.g. sub-luminal shocks, super-luminal shocks), with consequences to the contribution of the very high energy particles to the observed cosmic ray spectrum. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：193 / 196

页数：4

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