The polarization variability in the optical afterglow of GRB 990712

被引：6
|
作者：
Björnsson, G [1 ]
Lindfors, EJ [1 ]
机构：
[1] Univ Iceland, Inst Sci, IS-107 Reykjavik, Iceland
来源：
ASTROPHYSICAL JOURNAL | 2000年 / 541卷 / 02期
关键词：
gamma rays : bursts; polarization; radiation mechanisms : nonthermal;
D O I：
10.1086/312907
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
In a recent paper, Rol and colleagues present evidence for a variable polarization in the optical afterglow following the gamma-ray burst GRB 990712. The variation is highly significant, but the position angle appears to be time independent. Contrary to their conclusion, we point out that this can in fact be explained with existing afterglow models, namely, that of a laterally expanding jet.
引用
收藏
页码：L55 / L57
页数：3
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