| 两类γ暴的谱形和光变曲线的统计差异 |
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| 引用本文： | 彭朝阳,覃一平. 两类γ暴的谱形和光变曲线的统计差异[J]. 天文研究与技术, 2004, 1(2): 77-83 |
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| 作者姓名： | 彭朝阳 覃一平 |
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| 作者单位： | 云南师范大学物电学院,云南昆明650092 |
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| 基金项目： | 国家自然科学基金(10363002)，国家教育部重点科学研究基金(2142)，云南省自然科学基金(2001A0028M). |
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| 摘 要： | 使用currentBATSE catakog中的一部分数据，定义了2个分别反映γ射线暴的能谱形和光变曲线的物理量FR和TR，同时对它们的分布作了统计分析，发现对于两类不同的γ射线暴，它们的分布存在统计上的较为明显的差异。这意味着两类暴可能产生于不同的辐射区域，两类暴的暴源可能有本质的差异，这些结果支持了把γ射线暴分为长暴和短暴的分类方法。
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| 关 键 词： | γ射线暴 观测数据 物理量 统计分析 |
| 文章编号： | 1672-7673(2004)02-0077-07 |
| 修稿时间： | 2003-07-23 |
Statistical Distinctions of the Spectra and Light Curves Between Two Classes of Gamma-Ray Bursts |
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| PENG Zhao-yang,QIN Yi-ping. Statistical Distinctions of the Spectra and Light Curves Between Two Classes of Gamma-Ray Bursts[J]. Astronomical Research & Technology, 2004, 1(2): 77-83 |
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| Authors: | PENG Zhao-yang QIN Yi-ping |
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| Affiliation: | PENG Zhao-yang~1,QIN Yi-ping~ |
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| Abstract: | We define two quantities,FR and TR,which reflect the shapes of spectra and light curves of gamma-ray bursts,respectively.We employ the current BATSE catalog data,and make a statistical analysis.We find that the distribution of the two quantities for two classes of gamma-ray bursts are different.We present a brief discussion to the results.Based on our results and the discussion,we conclude that two classes of bursts may be generated from different sizes of emission regions.It seems that the difference of the two kinds of sources is intrinsic.Our results support the most accepted taxonomy of gamma-ray bursts. |
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| Keywords: | Gamma rays bursts BATSE catalogdata FR and TR statistical analysis |
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