摘要
多数伽玛射线暴的光学余辉衰减较平缓且光变曲线未见明显拐折,通常认为它们产生于各向同性火球, GRBs 970228、970508、971214、980329及980703等就是典型的例子.但柱型喷流模型其实也能对这类伽玛射线暴的余辉给出极好的拟合,因此它们完全有可能产生于柱形喷流,而并非一定是来自各向同性火球.
Afterglows from most gamma-ray bursts, such as GRBs 970228, 970508, 971214, 980329 and 980703, decay slowly and steadily. These bursts are widely believed to be due to isotropic fireballs. However, their afterglows in fact can also be well fit by the cylindrical jet model. It is proposed that these bursts are produced by cylindrical jets, not necessarily isotropic fireballs.
出处
《天文学报》
CSCD
北大核心
2002年第2期169-177,共9页
Acta Astronomica Sinica
基金
国家自然科学基金(10003001
19825109
19773007)
973项目
国家重点基础研究专项经费(the Special Funds for Major State Basic Research Projects)资助
