论文标题
确认具有X射线观测的中间质量黑洞候选
Confirmation of intermediate-mass black holes candidates with X-ray observations
论文作者
论文摘要
银河中心中超级黑洞（SMBH）的起源仍然不确定。它们的形成有两种可能的方法 - 从巨大的（$ 10^5-10^6 m _ {\ odot} $）和低质量（$ 100 m _ {\ odot} $）BH nuclei。后一种情况应留下大量的中间质量黑洞（IMBH，$ 10^2-10^5 m _ {\ odot} $）。最大的善意IMBH动力AGN样本包含X射线证实的10个对象。在这里，我们提出了一个新的样本，包括15个真正的IMBHS，通过通过从X射线范围内的银河系核中存在辐射来确认候选候选物，从而增加了星系中心确认的IMBH的数量。以同样的方式，确认了99个质量为$ 2 \ cdot10^5-10^6 m _ {\ odot} $的黑洞。 X射线数据的来源是公开可用的目录，数据档案以及我们对XMM-Newton，Chandra和Swift的观察结果。两种样品中30％的物体的Eddington系数被证明接近临界，从0.5到1，这是一个异常高的分数。同样，绘制了[OIII]发射线中的发光度或$Hα$线的宽分量与X射线范围内的亮度之间的亮度之间的相关性。
The origin of supermassive black holes (SMBH) in galaxy centers still remains uncertain. There are two possible ways of their formation - from massive ($10^5 - 10^6 M_{\odot}$) and low-mass ($100 M_{\odot}$) BH nuclei. The latter scenario should leave behind a large number of intermediate mass black holes (IMBH, $10^2 - 10^5 M_{\odot}$). The largest published sample of bona-fide IMBH-powered AGN contains 10 objects confirmed in X-ray. Here we present a new sample of 15 bona-fide IMBHs, obtained by confirming the optically selected IMBH candidates by the presence of radiation from the galactic nucleus in the X-ray range, which increases the number of confirmed IMBHs at the centers of galaxies by 2.5 times. In the same way, 99 black holes with masses of $2\cdot10^5 - 10^6 M_{\odot}$ were confirmed. The sources of X-ray data were publicly available catalogs, archives of data, and our own observations on XMM-Newton, Chandra and Swift. The Eddington coefficients for 30% of the objects from both samples turned out to be close to critical, from 0.5 to 1, which is an unusually high fraction. Also for the first time for light-weight SMBH the correlations between the luminosity in the [OIII] emission line or the broad component of the $Hα$ line and the luminosity in the X-ray range were plotted.
