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arXiv 1802.07149astro-ph.HE
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关于寻找难以捉摸的中等质量黑洞

On the search of the elusive Intermediate Mass Black-Holes

M. D. Caballero-Garcia, S. Fabrika, A. J. Castro-Tirado, M. Bursa, M. Dovciak, A. Castellon, V. Karas

摘要:

超亮X射线源(ULX)是吸积的黑洞,其X射线特性与恒星质量的黑洞双星不同。在大多数情况下,它们的内禀能谱可以很好地描述为冷吸积盘(热)加上弯曲的高能发射分量。由热盘分量导出的黑洞质量通常在100-10^5太阳质量之间,这导致了这样一种想法,即这可以代表中等质量黑洞(IMBH)的强有力证据,理论研究提出存在,但迄今为止还没有确定的检测(作为一个类别)。最近的理论和观测的发展导致了这样一种想法,即这些源是在不寻常的超爱丁顿制度下吸积的紧凑物体。另一方面,引力波被认为是寻找(其中一些)IMBH的有用工具。我们简要介绍了最近发现的引力波及其与这些迄今难以捉摸的IMBH的关系。

英文摘要:

Ultra-Luminous X-ray sources (ULXs) are accreting black holes for which their X-ray properties have been seen to be different to the case of stellar-mass black hole binaries. For most of the cases their intrinsic energy spectra are well described by a cold accretion disc (thermal) plus a curved high-energy emission components. The mass of the black hole (BH) derived from the thermal disc component is usually in the range of 100-10^5 solar masses, which have led to the idea that this can represent strong evidence of the Intermediate Mass Black Holes (IMBH), proposed to exist by theoretical studies but with no firm detection (as a class) so far. Recent theoretical and observational developments are leading towards the idea that these sources are instead compact objects accreting at an unusual super-Eddington regime instead. On the other hand, gravitational waves have been seen to be a useful tool for finding (some of these) IMBHs. We give a brief overview about the recent advent of the discovery of gravitational waves and their relationship with these so far elusive IMBHs.

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