论文标题

无线电与无线电黑暗伽马射线爆发 - 更多证据证明了不同的祖细胞

Radio-bright vs. Radio-dark Gamma-ray Bursts -- More Evidence for Distinct Progenitors

论文作者

Chakraborty, Angana, Dainotti, Maria, Cantrell, Olivia, Lloyd-Ronning, Nicole

论文摘要

我们分析了两个不同的GRB样本,具有和没有无线电发射。我们使用211个GRB的样本,这是Arxiv:1902.01974的先前样品的更新,并发现与先前的结果(尽管样品的样本几乎是两倍的大小),这是这些两个群体之间的固有伽马射线持续时间(TINT)和异位型等效能量(EISO)分布显着差异。两个样本的红移(z)分布在统计上没有不同。我们分析了变量(EISO,TINT,JET OPET角度和Z)之间的几个相关性,使用Efron-Petrosian方法考虑了选择效果和红移的演变。对于无线电和无线电漆GRB,我们发现喷射角和红移以及色调和红移之间的统计学意义反相关以及色调和红移之间。最后,与先前的工作一致,我们发现无线电GRB样品中存在很高的能量(0.1-100 GEV)。我们的作品支持了无线电和无线电grb的可能性来自不同的祖细胞。

We analyze two distinct samples of GRBs, with and without radio afterglow emission. We use a sample of 211 GRBs which is an update of the previous sample from arXiv:1902.01974, and find, in agreement with previous results (although with a sample that is almost twice as large) as the intrinsic gamma-ray duration (Tint) and isotropic equivalent energy (Eiso) distributions between these two populations appear to differ significantly. The redshift (z) distributions of the two samples are not statistically different. We analyze several correlations between variables (Eiso, Tint, jet opening angle, and z), accounting for selection effects and redshift evolution using the Efron-Petrosian method. We find a statistically significant anti-correlation between the jet opening angle and redshift, as well as between Tint and redshift, for both radio-bright and radio-dark GRBs. Finally, in agreement with previous work, we find that very high energy (0.1 - 100 GeV) extended emission is present in the radio-bright GRB sample only. Our work supports the possibility that the radio-bright and the radio-dark GRBs originate from different progenitors.

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