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arXiv 1909.01995astro-ph.HE
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费米GBM暴的多元统计

The Fermi GBM GRBs' multivariate statistics

Istvan I. Racz, Lajos G. Balázs, Zsolt Bagoly, Istvan Horvath, L. Viktor Tóth

摘要:

研究伽玛暴的伽玛能谱可以揭示伽马射线暴的某些物理信息。费米卫星观测到超过2000个伽玛射线暴。FERMIGBRST星表包含对总辐射(注量)和峰值通量间隔期间的辐射估算的GRB参数(峰值能量、光谱指数、强度)。我们发现的光谱类别和模型无关的物理数据之间的线性判别分析的关系。我们比较了斯威夫特和费米光谱类型。我们发现费米能流谱和斯威夫特谱之间存在联系,但峰值通量谱的结果可能是有争议的。我们发现斯威夫特和费米都观测到的伽玛暴也可以像完整的费米样本一样进行区分。我们的结论是,共同的观察可能并不意味着任何痕迹的选择效应的光谱行为的伽玛暴。

英文摘要:

Studying the GRBs' gamma-ray spectra may reveal some physical information of Gamma-ray Bursts. The Fermi satellite observed more than two thousand GRBs. The FERMIGBRST catalog contains GRB parameters (peak energy, spectral indices, intensity) estimated for both the total emission (fluence), and the emission during the interval of the peak flux. We found a relationship with linear discriminant analysis between the spectral categories and the model independent physical data. We compared the Swift and Fermi spectral types. We found a connection between the Fermi fluence spectra and the Swift spectra but the result of the peak flux spectra can be disputable. We found that those GRBs which were observed by both Swift and Fermi can similarly discriminate as the complete Fermi sample. We concluded that the common observation probably did not mean any trace of selection effects in the spectral behavior of GRBs.

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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