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arXiv 1810.03079astro-ph.HE
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快速X射线闪光和富X射线伽马射线暴的统计研究

Statistical Study of the Swift X-ray Flash and X-ray Rich Gamma-Ray Bursts

Xiongwei Bi, Jirong Mao, Chuanxi Liu, Jin-Ming Bai

摘要:

我们建立了一个全面的样本,统计描述的X射线闪光(XRFs)和X射线财富(XRRs)的属性,从最新的第三次雨燕爆发警报望远镜(BAT 3)的伽马射线暴(GRB)目录。我们获得了81个XRF,540个XRR和394个经典GRB(C-GRB)。我们统计探索的不同属性的$γ$射线的即时发射,X射线发射,X射线光曲线类型,与超新星(SNe)的协会,和这些源的宿主星系的属性。我们确认,大多数XRF/XRR是长的、峰值能量低的$E^{obs}_{peak}$暴,它们是低亮度暴。XRF、XRR和C-GRB遵循相同的$E_{X,iso}$ - $E_{γ,iso}$ - $E_{peak,z}$相关性。与经典伽玛暴相比,XRF更有利于与SN爆炸发生关联。我们没有发现XRF、XRR和C-GRB的红移分布和宿主星系性质有任何显著差异。我们还讨论了一些可能影响我们统计结果的观测偏差和选择效应。具有宽能量范围和低能量阈值的伽玛射线暴探测器是未来XRF/XRR研究的发展方向。

英文摘要:

We build a comprehensive sample to statistically describe the properties of X-ray flashes (XRFs) and X-ray riches (XRRs) from the latest third Swift Burst Alert Telescope (BAT3) catalog of Gamma-ray bursts (GRBs). We obtain 81 XRFs, 540 XRRs, and 394 classical GRBs (C-GRBs). We statistically explore the different properties of the $γ$-ray prompt emission, the X-ray emission, the X-ray lightcurve type, the association with supernovae (SNe), and the host galaxy properties for these sources. We confirm that most XRFs/XRRs are long GRBs with low values of peak energy $E^{obs}_{peak}$ and they are low-luminosity GRBs. XRFs, XRRs, and C-GRBs follow the same $E_{X,iso}$-$E_{γ,iso}$-$E_{peak,z}$ correlations. Compared to the classical GRBs, XRFs are favorable to have the association with SN explosions. We do not find any significant differences of redshift distribution and host galaxy properties among XRFs, XRRs, and C-GRBs. We also discuss some observational biases and selection effects that may affect on our statistical results. The GRB detectors with wide energy range and low energy threshold are expected for the XRF/XRR research in the future.

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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