arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1506.00992astro-ph.HEastro-ph.CO
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费米伽马射线暴的分类

Classification of Fermi Gamma-RAY Bursts

I. Horvath, L. G. Balázs, J. Hakkila, Z. Bagoly, R. D. Preece

摘要:

Fermi GBM目录最近出版。先前对BATSE、RHESSI、BeppoSAX和Swift数据库的分类分析发现了三种类型的伽马射线暴。现在我们分析GBM目录来分类GRB。主成分分析和多聚类分析显示了三个组。根据观测到的变量对这些组的验证表明,其中一组与短伽玛暴相吻合。另外两组将长类分成明亮和暗淡的部分,由峰值通量定义。需要进一步的分析来确定这种分裂是否只是分析的数学副产品,或者有一些真正的物理意义。

英文摘要:

The Fermi GBM Catalog has been recently published. Previous classification analyses of the BATSE, RHESSI, BeppoSAX, and Swift databases found three types of gamma-ray bursts. Now we analyzed the GBM catalog to classify the GRBs. PCA and Multiclustering analysis revealed three groups. Validation of these groups, in terms of the observed variables, shows that one of the groups coincides with the short GRBs. The other two groups split the long class into a bright and dim part, as defined by the peak flux. Additional analysis is needed to determine whether this splitting is only a mathematical byproduct of the analysis or has some real physical meaning.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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