| The Role of T_(50) in the Classification of Gamma-ray Bursts |
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| 作者姓名： | Xiao-Hong Zhao Yi-Ping Qin Yun-Ming Dong and Zhao-Yang Peng Yunnan Observatory Chinese Academy of Sciences Kunming |
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| 作者单位： | Xiao-Hong Zhao，Yi-Ping Qin，Yun-Ming Dong and Zhao-Yang Peng Yunnan Observatory，Chinese Academy of Sciences，Kunming 650011; |
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| 基金项目： | Support by the National Natural Science Foundation of China. |
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| 摘 要： | The role of T50 in classifying gamma-ray bursts (GRBs) is investigated. We take T50=0.7s as the line of division and find that some bursts belonging to the class of long bursts defined by T90≥2s now become short bursts (sample 1), while some belonging to the class of short bursts defined by T90 < 2 s now become long bursts (sample 2). We study how these sources are affected by the two methods of classification and find the change of classes of sample 1 is due to some peculiar properties of the light curves. Based on their characters, most of the bursts of sample 1 should be taken as short bursts.
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| 关 键 词： | 伽马射线 脉冲 观察资料 光变曲线 |
The Role of T50 in the Classification of Gamma-ray Bursts |
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| Xiao-Hong Zhao,Yi-Ping Qin,Yun-Ming Dong and Zhao-Yang Peng Yunnan Observatory,Chinese Academy of Sciences,Kunming ,.The Role of T_(50) in the Classification of Gamma-ray Bursts[J].Chinese Journal of Astronomy and Astrophysics,2004,4(4):349-356. |
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| Authors: | Xiao-Hong Zhao Yi-Ping Qin Yun-Ming Dong and Zhao-Yang Peng Yunnan Observatory Chinese Academy of Sciences Kunming |
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| Institution: | Xiao-Hong Zhao,Yi-Ping Qin,Yun-Ming Dong and Zhao-Yang Peng Yunnan Observatory,Chinese Academy of Sciences,Kunming 650011, |
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| Abstract: | |
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| Keywords: | gamma ray: bursts - gamma ray: observations |
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