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arXiv 1601.05971astro-ph.HE
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作为超爱丁顿吸积盘的超铝X射线源

Ultraluminous X-ray sources as super-Eddington accretion disks

Sergei Fabrika, Alexander Vinokurov, Kirill Atapin

摘要:

超亮X射线源(ULX)的起源是一个谜,在外部星系的X射线亮度超过我们银河系中最明亮的黑洞的数百和数千倍。最流行的ULX模型涉及以超爱丁顿速率吸积的中等质量黑洞(IMBH)或恒星质量黑洞。在这里,我们回顾ULX的性质,它们的X射线谱表明,在超临界吸积假设的吸积盘中存在热风。然而,最有力的证据来自光谱学。ULX对应物的光谱与SS 433非常相似,SS 433是我们银河系中唯一已知的超临界吸积体。

英文摘要:

The origin of Ultraluminous X-ray sources (ULXs) in external galaxies whose X-ray luminosities exceed those of the brightest black holes in our Galaxy by hundreds and thousands of times is mysterious. The most popular models for the ULXs involve either intermediate mass black holes (IMBHs) or stellar-mass black holes accreting at super-Eddington rates. Here we review the ULX properties, their X-ray spectra indicate a presence of hot winds in their accretion disks supposing the supercritical accretion. However, the strongest evidences come from optical spectroscopy. The spectra of the ULX counterparts are very similar to that of SS 433, the only known supercritical accretor in our Galaxy.

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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