Expected characteristics of the subclass of supernova gamma-ray bursts

被引：72

作者：

Bloom, JS ^{[1
]}

Kulkarni, SR

Harrison, F

Prince, T

Phinney, ES

Frail, DA

机构：

[1] CALTECH, Div Phys Math & Astron, Pasadena, CA 91125 USA

[2] Natl Radio Astron Observ, Socorro, NM 87801 USA

来源：

ASTROPHYSICAL JOURNAL | 1998年 / 506卷 / 02期

关键词：

gamma rays : bursts; supernovae : general; supernovae : individual (SN 1998bw);

D O I：

10.1086/311655

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The spatial and temporal coincidence of gamma-ray burst (GRB) 980425 and supernova (SN) 1998bw has prompted speculation that there exists a subclass of GRBs produced by SNe ("S-GRBs"). A physical model motivated by radio observations lead us to propose the following characteristics of S-GRBs: (1) prompt radio emission and an implied high brightness temperature close to the inverse Compton limit, (2) high expansion velocity (greater than or similar to 50,000 km s(-1)) of the optical photosphere as derived from lines widths and energy release larger than usual, (3) no long-lived X-ray afterglow, and (4) a single pulse GRB profile. Radio studies of previous SNe show that only (but not all) Type Ib and Ic SNe potentially satisfy the first condition. We investigate the proposed associations of GRBs and SNe within the context of these proposed criteria and suggest that similar to 1% of GRBs detected by BATSE may be members of this subclass.

引用

页码：L105 / L108

页数：4

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