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arXiv 0706.0930astro-ph
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原始黑洞与恒星碰撞的伽马射线暴

Gamma-Ray Bursts as Manifestation of Collisions of Primordial Black Holes with Stars

B. E. Zhilyaev

摘要:

使用BATSE调查数据,我发现,相当小的一部分伽玛暴编号37源似乎发出的辐射类似于热韧致辐射的范围在20至300千电子伏。我认为,这些爆发可能发生在恒星与原始黑洞(PBH)的碰撞中。这些物体是早期宇宙中热物质的遗迹。恒星附近的PBH可能是恒星从星际云形成过程中的合并过程的结果。目前,它们可以在恒星周围形成引力捕获的光环,如太阳彗星家族。彗星范式已被用来理解PBH的各个方面。彗星与太阳和行星的碰撞是太阳系历史上的普通事件。通过类比,人们可以支持这样的观点,即PBH与母星的碰撞在其历史上也可能是相当频繁的事件。PBH是与恒星碰撞时驱动伽马射线暴的发动机。进入恒星大气层后,PBH会由于吸积作用而产生持续时间从零点几秒到几秒的伽马射线暴。它能表现出某些伽玛暴的主要定性特征。它们的质量估计在太阳质量的千分之一到百分之一之间。我发现这些爆发源在天空中是各向同性分布的,并且可以从50 ps的距离看到。在这种背景下,人们可以预期,一些短伽玛暴是宇宙中原始黑洞的可观测特征。

英文摘要:

Using the BATSE survey data I find that quite small fraction of GRBs numbering 37 sources seems to emit the radiation similar to thermal bremsstrahlung in the range 20 to 300 keV. I suggest that these bursts may perhaps occur from collision of stars with primordial black holes (PBH). These objects are relic of a hot matter in the early Universe. PBH in the vicinity of stars may be found in consequence of incorporation processes during the formation of stars from interstellar clouds. At present they can form the gravitationally captured haloes around stars like the family of solar comets. The comet paradigm has been used to understand various aspects of PBH. Comet collisions with the Sun and planets are ordinary events in solar system history. On the analogy, one can support the view that PBH collisions with the parent star may be quite frequent events in its history, too. PBHs are the engines driving gamma-ray bursts when collide with the stars. Entering a stellar atmosphere, PBH is supposed to produce the gamma-ray burst due to accretion with duration from a few tenths of second to a few seconds. It can exhibit the main qualitative features of some GRBs. Their masses are estimated in the range from thousandths to hundredths of the solar mass. I found that these burst sources are isotropically distributed on the sky and are seen from a distance up to 50 ps. In this context one may expect that some short GRBs are observable signatures of primordial black holes in the Universe.

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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