伽玛暴(Gamma-Ray Burst)笔记。记录有关伽玛暴的新文章,另外也包括看的老文章、自己的想法、以及跟天文相关的一些东西。 Feel free to leave me a message by comments or by email.

星期二, 三月 24, 2009

Bloom 1998 GRB 980425的瞬时光变曲线

主要内容:
找了好久的这个暴的光变曲线, 居然藏在一个不以980425为标题的文章里.

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Title:
Expected Characteristics of the Subclass of Supernova Gamma-Ray Bursts
Authors:
Bloom, J. S.; Kulkarni, S. R.; Harrison, F.; Prince, T.; Phinney, E. S.; Frail, D. A.
Publication:
The Astrophysical Journal, Volume 506, Issue 2, pp. L105-L108. (ApJ Homepage)
Publication Date:
10/1998
Origin:
APJ
ApJ Keywords:
GAMMA RAYS: BURSTS, STARS: SUPERNOVAE: GENERAL, STARS: SUPERNOVAE: INDIVIDUAL: ALPHANUMERIC: SN 1998BW
Abstract Copyright:
(c) 1998: The American Astronomical Society
DOI:
10.1086/311655
Bibliographic Code:
1998ApJ...506L.105B

Abstract

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 (>~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 ~1% of GRBs detected by BATSE may be members of this subclass.
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