A Unified Model of Short and Long Gamma-Ray Bursts, X-Rayndashrich Gamma-Ray Bursts, and X-Ray Flashes

Astrophysical Journal Letters 607 巻 2 号 L103-L106 頁 2004-06 発行
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タイトル ( eng )
A Unified Model of Short and Long Gamma-Ray Bursts, X-Rayndashrich Gamma-Ray Bursts, and X-Ray Flashes
作成者
Yamazaki Ryo
Ioka Kunihito
Nakamura Takashi
収録物名
Astrophysical Journal Letters
607
2
開始ページ L103
終了ページ L106
抄録
Taking into account the recent suggestion that a short gamma-ray burst (GRB) looks like the first 1 s of a long GRB, we propose that the jet of a GRB consists of multiple subjets or subshells (i.e., an inhomogeneous jet model). The multiplicity of the subjets along a line of sight n(s) is an important parameter. If n(s) is large (much greater than1) the event looks like a long GRB, while if n(s) is small (similar to1) the event looks like a short GRB. If our line of sight is off-axis to any subjets, the event looks like an X-ray flash or an X-ray-rich GRB. The lognormal distribution of durations of short and long GRBs are also suggested in the same model.
著者キーワード
gamma rays
bursts
theory
NDC分類
地球科学・地学・地質学 [ 450 ]
言語
英語
資源タイプ 学術雑誌論文
出版者
University of Chicago Press
発行日 2004-06
権利情報
Copyright (c) 2004 The American Astronomical Society
出版タイプ Version of Record(出版社版。早期公開を含む)
アクセス権 オープンアクセス
収録物識別子
[ISSN] 0004-637X
[DOI] 10.1086/421872
[DOI] http://dx.doi.org/10.1086/421872