| GRB 050502B余辉中耀发起源的探讨 |
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| 引用本文： | 杨喆,侯书进,刘晶晶,张建福. GRB 050502B余辉中耀发起源的探讨[J]. 琼州学院学报, 2014, 0(2): 40-43 |
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| 作者姓名： | 杨喆 侯书进 刘晶晶 张建福 |
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| 作者单位： | [1]南阳师范学院物理与电子工程学院,河南南阳473061 [2]琼州学院理工学院,海南三亚572022 [3]铜仁学院物理与应用工程系,贵州铜仁554300 |
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| 基金项目： | 基金项目：贵州省科技厅自然科学基金资助项目（LKT[2012]27）;琼州学院本科实践教学改革项目（QYSJ2013-088） |
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| 摘 要： | 耀发现象是伽玛射线暴余辉中的普遍现象.但GRB 050502B余辉中的耀发比较特别,它是目前为止观测到最巨大的耀发之一.通过对这个暴中的耀发的研究,有助于我们的对普通耀发的认识.我们详细分析了GRB 050502B耀发的光变,谱随时间的演化,硬度比随时间的演化.我们发现谱的演化是由硬到软,硬度比的演化由大到小,两者相一致.GRB050502B的耀发和伽玛射线暴瞬时辐射的谱演化信息一致,支持了X射线耀发来自中心引擎.
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| 关 键 词： | 伽玛射线暴 X射线耀发 中心引擎 |
Origin of Flare in Afterglow of GRB 050502B |
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| Affiliation: | YANG Zhe1, HOU Shu - jin1, LIU Jing - jing2, ZHANG Jian - fu3(1. College of Physics and Electronic Engineering, Nanyang Normal University, Nanyang, Henan, 473061, China; 2. College of Science and Technology, Qiongzhou University, Sanya, Hainan, 572022, China; 3. Department of Physics and Application Engineering, Tongren University, Tongren, Guizhou 554300, China) |
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| Abstract: | The flare is very common phenomenon in afterglow of Gamma - ray bursts. But the flare in after- glow of GRB 050502B is very special, that is one of the brightest flare by far. The flare is helpful for understand- ing the origin and physics of flare. The light curve, spectrum evolution, hardness ratio of GRB 050502B flare was analyzed to propose that is a single pulse, its spectrum is from hard to soft and its hardness ratio is from big to small. The characteristics are very similar with the prompt emission. That is supported that the flare is from cen- tral engine. |
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| Keywords: | Gamma - ray burst X - ray flare Central engine |
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