An Off-Axis Jet Model for GRB 980425 and Low Energy Gamma-Ray Bursts(Poster)
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概要
- 論文の詳細を見る
Using a simple off-axis jet model of GRBs, we can reproduce the observed unusual properties of the prompt emission of GRB 980425, such as the extremely low isotropic γ-ray energy and the soft spectrum when the jet with the standard energy of 〜10^<51> ergs and the opening half-angle of 10°≤Δθ≤30° is seen from the off-axis viewing angle θ_υ〜Δθ+10γ^<-1>, where γ is a Lorentz factor of the jet. Our model may be able to explain the other unusual properties of this event. We also discuss the connection of GRB 980425 in our model with the X-ray flash, and the origin of a class of GRBs with small E_γ.
- 理論物理学刊行会の論文
- 2004-11-15
著者
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Yonetoku Daisuke
Department Of Physics Kanazawa University
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Yamazaki Ryo
Department Of Earth And Space Science Osaka University
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Nakamura Takashi
Department Of Cardiology Saiseikai Shiga Hospital
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YAMAZAKI Ryo
Department of Physics, Kyoto University
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