EVOLUTION OF SUPERNOVA-REMNANTS WITH COSMIC-RAYS AND RADIATIVE COOLING

被引:6
|
作者
DORFI, EA
机构
[1] Institut für Astronomie, Universität Wien, A-1180 Wien
来源
关键词
ACCELERATION OF PARTICLES; COSMIC RAYS; GAMMA RAYS; THEORY; SHOCK WAVES; SUPERNOVA REMNANTS;
D O I
10.1086/191913
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
Recent numerical models for SNR evolution are presented, including first-order Fermi acceleration with injection of suprathermal particles at the shock wave, heating due to dissipation of Alfven waves in the precursor region and radiative cooling of the thermal plasma. The X-ray fluxes obtained from these SNR models show significant differences depending on the acceleration efficiency of cosmic rays. gamma-ray fluxes are calculated originating from pi(0)-decay of pions generated by collisions of the high-energy particles with the thermal plasma. Cooling of the thermal plasma and dissipation of Alfven waves in the precursor are important to determine the final amount of the explosion energy E(SN) which is transferred into cosmic rays.
引用
收藏
页码:841 / 844
页数:4
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