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arXiv 1009.2685astro-ph.HE
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用SPI-ACS/INTEGRAL探测短伽马射线暴的扩展辐射

Extended Emission from Short Gamma-Ray Bursts Detected with SPI-ACS/INTEGRAL

P. Yu. Minaev, A. S. Pozanenko, V. M. Loznikov

摘要:

研究了INTEGRAL天文台SPI-ACS实验中观测到的短持续时间(T90 < 2 s)伽马射线暴(GRB)。平均光变曲线已被构建为不同的事件组,包括短伽玛暴和未确认的短事件。在短伽玛暴和未确认的短事件的平均光变曲线中都发现了扩展发射。结果表明,SPI-ACS伽玛暴总数中短伽玛暴的比例可以从30%到45%不等,这是相当大的比以前认为的。

英文摘要:

The short duration (T90 < 2 s) gamma-ray bursts (GRBs) detected in the SPI-ACS experiment onboard the INTEGRAL observatory are investigated. Averaged light curves have been constructed for various groups of events, including short GRBs and unidentified short events. Extended emission has been found in the averaged light curves of both short GRBs and unidentified short events. It is shown that the fraction of the short GRBs in the total number of SPI-ACS GRBs can range from 30 to 45%, which is considerably larger than has been thought previously.

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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