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ID 14634
本文ファイル
著者
Yamazaki, Ryo
Ioka, Kunihito
Nakamura, Takashi
キーワード
gamma rays
bursts
theory
NDC
天文学・宇宙科学
抄録(英)
K. Ioka and T. Nakamura proposed a simple jet model that is compatible with the peak luminosity–spectral lag relation, the peak luminosity–variability relation, and various other relations in the gamma-ray bursts. If the viewing angle is much larger than the collimation angle of the jet in the model by Ioka and Nakamura, for appropriate model parameters we obtain the observational characteristics of the X-ray flashes, such as the peak flux ratio and the fluence ratio between the γ-ray (50–300 keV) and the X-ray (2–10 keV) band, the X-ray photon index, the typical duration, and the event rate, ∼100 yr-1. In our model, if the distance to the X-ray flashes is much larger than ∼1 Gpc (or z ≳ 0.2) they are too dim to be observed, so the spatial distribution of the X-ray flashes should be homogeneous and isotropic.
掲載誌名
The Astrophysical Journal Letters
57巻
1号
開始ページ
L31
終了ページ
L35
出版年月日
2002-05
出版者
Chicago University Press
ISSN
0004-637X
出版者DOI
言語
英語
NII資源タイプ
学術雑誌論文
広大資料タイプ
学術雑誌論文
DCMIタイプ
text
フォーマット
application/pdf
著者版フラグ
publisher
権利情報
Copyright (c) 2002 The American Astronomical Society
関連情報URL(IsVersionOf)
http://dx.doi.org/10.1086/341225
部局名
理学研究科