GAMMA-RAY LINE AFTERGLOW FROM BURST ENVIRONMENTS

被引:4
作者
FENCL, HS [1 ]
BOYD, RN [1 ]
HARTMANN, D [1 ]
机构
[1] CLEMSON UNIV,KINARD LAB PHYS,DEPT PHYS & ASTRON,CLEMSON,SC 29634
关键词
GAMMA-RAYS; BURSTS; RADIATION MECHANISMS; MISCELLANEOUS;
D O I
10.1086/172044
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We consider photoerosion and direct pair production in a medium surrounding a gamma-ray burst. The resulting secondary gamma-rays may provide diagnostic tools of these environments and, in turn, of the nature of the bursters themselves. In some instances short-lived nuclides are formed; the beta-delayed gamma-rays produced from their decays provide the signatures of the photoerosion. In addition, annihilation radiation produced from positrons resulting from direct pair production is related to the plasma conditions in the medium. We investigate the plausibility of detecting the various radiations. Under extremely favorable conditions, the photoerosion afterglow might be detectable with the present generation of detectors. However, the positron annihilation line should be detectable under a fairly wide range in the conditions of the medium.
引用
收藏
页码:120 / 124
页数:5
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