arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2005.11606astro-ph.HE
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在INTEGRAL天文台IBIS/ISGRI望远镜的档案数据中发现的新的伽马射线暴

New Gamma-Ray Bursts Found in the Archival Data from the IBIS/ISGRI Telescope of the INTEGRAL Observatory

I. V. Chelovekov, S. A. Grebenev, A. S. Pozanenko, P. Yu. Minaev

摘要:

对INTEGRAL天文台IBIS/ISGRI望远镜2003-2018年的档案数据中宇宙伽马射线暴和其他短硬X射线事件进行了系统搜索。在望远镜的视野中已经记录了七个以前未知的伽玛暴,它们都被定位在小于2弧分的精度。为自动伽玛射线暴搜索和警报而设计的INTEGRAL爆发警报系统(IBAS)没有发现这些事件。IBAS遗漏了另外四个这样的局部事件,但以前已知,即,另外还记录到886个与IBIS/ISGRI轴成大角度到达视场外的伽玛暴。所有这些都是以前在其他实验中记录的,主要是由INTEGRAL上SPI伽马射线光谱仪的反符合屏蔽(ACS),IBIS伽马射线望远镜的PICsIT探测器和KONUS/WIND监视器。在其他实验中没有任何确认的事件已经记录了一个数量级。伽马射线暴和太阳耀斑或磁层瞬变事件都可能是其中之一。编制了IBIS/ISGRI记录的已确认和以前未知的伽玛暴的基本参数目录。构造并研究了不同参数下的爆发统计分布。

英文摘要:

A systematic search for cosmic gamma-ray bursts (GRBs) and other short hard X-ray events in the archival data from the IBIS/ISGRI telescope of the INTEGRAL observatory over 2003-2018 has been carried out. Seven previously unknown GRBs have been recorded in the telescope field of view; all of them have been localized with an accuracy < 2 arcmin. These events were not revealed by the INTEGRAL burst alert system (IBAS) designed for an automatic GRB search and alert. Four more such localized events missed by IBAS, but known previously, i.e., observed in other experiments, have been found. Eight hundred and eighty six GRBs outside the field of view that arrived at large angles to the IBIS/ISGRI axis have also been recorded. All of them were previously recorded in other experiments, primarily by the anticoincidence shield (ACS) of the SPI gamma-ray spectrometer onboard INTEGRAL, the PICsIT detector of the IBIS gamma-ray telescope, and the KONUS/WIND monitor. An order of magnitude more events without any confirmations in other experiments have been recorded. Both GRBs and solar flares or magnetospheric transient events can be among them. Catalogs with the basic parameters of confirmed and previously unknown GRBs recorded by IBIS/ISGRI have been compiled. The statistical distributions of bursts in various parameters have been constructed and investigated.

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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