GRANAT/SIGMA observation of GRB 920723 soft gamma-ray afterglow

被引：7

作者：

Burenin, RA

Vikhlinin, AA

Terekhov, OV

Tkachenko, AY

Sazonov, SY

Gilfanov, MR

Churazov, EM

Sunyaev, RA

Goldoni, P

Claret, A

Goldwurm, A

Paul, J

Roques, JP

Jourdain, E

Vedrenne, G

Mandrou, P

机构：

[1] Russian Acad Sci, Space Res Inst, Moscow 117810, Russia

[2] Max Planck Inst Astrophys, D-85740 Garching, Germany

[3] Ctr Etud Saclay, CEA, F-91191 Gif Sur Yvette, France

[4] Ctr Etud Spatiale Rayonnements, Toulouse, France

来源：

ASTRONOMY & ASTROPHYSICS SUPPLEMENT SERIES | 1999年 / 138卷 / 03期

关键词：

gamma-rays; bursts;

D O I：

10.1051/aas:1999295

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present GRANAT/SIGMA observations of the soft gamma-ray afterglow immediately after the bright GRB 920723. After similar to 6s, the burst light curve makes a smooth transition into an afterglow where flux decays as t(-0.7) for at least similar to 1000 s. At least similar to 20% of main burst energy is emitted in the afterglow. The hardness of the afterglow spectrum corresponds to the power law spectral index approximate to 1, which is significantly softer than the main burst.

引用

页码：443 / 444

页数：2

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