COSMIC-RAYS AND GAMMA-RAYS IN EARLY GALAXIAN PHASES AND THE COSMIC GAMMA-RAY BACKGROUND

被引:5
作者
PRANTZOS, N [1 ]
CASSE, M [1 ]
机构
[1] CTR ETUD SACLAY,SERV ASTROPHYS,DAPNIA,SAP,F-91191 GIF SUR YVETTE,FRANCE
关键词
COSMIC RAYS; GAMMA-RAYS; THEORY; NUCLEAR REACTIONS; NUCLEOSYNTHESIS; ABUNDANCES;
D O I
10.1086/192018
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
Recent observations of Be and B in old halo stars can be explained by models invoking large cosmic-ray fluxes in the early Galaxy. If this is a generic feature of early galaxian phases, large gamma-ray fluxes resulting from pion decay should have been produced at redshifts Z approximately 3-10. We estimate the evolution of the gamma-ray luminosity of spiral galaxies and their contribution to the cosmic gamma-ray background.
引用
收藏
页码:575 / 578
页数:4
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