Early afterglow, magnetized central engine, and a quasi-universal jet configuration for long GRBs

被引：0
作者：
Zhang, B [1 ]
Kobayashi, S [1 ]
Mészáros, P [1 ]
Lloyd-Ronning, NM [1 ]
Dai, XY [1 ]
机构：
[1] Penn State Univ, Dept Astron & Astrophys, University Pk, PA 16802 USA
来源：
GAMMA-RAY BURSTS: 30 YEARS OF DISCOVERY | 2004年 / 727卷
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D O I：
暂无
中图分类号：
V [航空、航天];
学科分类号：
08 ; 0825 ;
摘要：
Two separate topics are discussed. (1) We describe the classifications of the long GRB early afterglow lightcurves within the framework of the fireball shock model, focusing on the interplay between the reverse and forward shock emission components. We also provide evidence that the central engine of at least two bursts are entrained with strong magnetic fields, and discuss the implications of this result for our understanding of the GRB phenomenon; (2) We argue that the current gamma-ray burst (GRB) and X-ray flash (XRF) data are consistent with a picture that all GRB-XRF jets are structured and quasi-universal, with a typical Gaussian-like jet structure.
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页码：208 / 212
页数：5
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