The jet and the supernova in GRB 990712

被引：42

作者：

Björnsson, G

Hjorth, J

Jakobsson, P

Christensen, L

Holland, S

机构：

[1] Univ Iceland, Inst Sci, IS-107 Reykjavik, Iceland

[2] Univ Copenhagen, Astron Observ, DK-2100 Copenhagen O, Denmark

[3] Univ Notre Dame, Dept Phys, Notre Dame, IN 46556 USA

[4] Aarhus Univ, Inst Fys & Astron, DK-8000 Aarhus C, Denmark

来源：

ASTROPHYSICAL JOURNAL | 2001年 / 552卷 / 02期

基金：

美国国家航空航天局;

关键词：

gamma rays : bursts;

D O I：

10.1086/320328

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The optical light curve of the afterglow following the gamma-ray burst GRB 990712 is reexamined. Recently published polarization measurements of that source require a collimated outflow geometry that in turn predicts a break in the light curve. We show that the V-band light curve is consistent with such a break and that the postbreak light-curve evolution is dominated by a supernova contribution.

引用

页码：L121 / L124

页数：4

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