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arXiv 1104.2528astro-ph.HEastro-ph.CO
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来自GRB 110328 A的增强发射可能是恒星潮汐破裂的证据

Enhanced emission from GRB 110328A could be evidence for tidal disruption of a star

Ulisses Barres de Almeida, Alessandro De Angelis

摘要:

3月28日,斯威夫特的突发警报望远镜在天龙座发现了一个源,当时它爆发了一系列X射线爆炸。这次爆炸被归类为伽马射线暴(GRB)110328 A,在接下来的几天里多次爆发,使得将这次事件解释为GRB的可能性不大。在这里,我们认为,该事件可能是由于潮汐破坏的恒星,接近的近圆心距离的黑洞,我们使用这个事实来推导出这样的系统的物理特性的界限,基于变化的时间尺度和能量的观测到的X射线发射。

英文摘要:

On March 28, Swift's Burst Alert Telescope discovered a source in the constellation Draco when it erupted in a series of X-ray blasts. The explosion, catalogued as gamma-ray burst (GRB) 110328A, repeatedly flared in the following days, making the interpretation of the event as a GRB unlikely. Here we suggest that the event could be due to the tidal disruption of a star that approaches the pericentric distance of a black hole, and we use this fact to derive bounds on the physical characteristics of such system, based on the variability timescales and energetics of the observed X-ray emission.

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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