arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2201.01075astro-ph.HEastro-ph.GA
收藏

用X射线观测确认中等质量黑洞候选者

Confirmation of intermediate-mass black holes candidates with X-ray observations

Victoria Toptun, Igor Chilingarian, Kirill Grishin, Ivan Katkov, Ivan Zolotukhin, Vladimir Goradzhanov, Mariia Demianenko, Ivan Kuzmun

摘要:

星系中心超大质量黑洞(SMBH)的起源仍然不确定。它们有两种可能的形成方式--来自大质量($10^5 - 10^6 M_{\odot}$)和低质量($100 M_{\odot}$)BH核。后一种情况应该会留下大量中等质量的黑洞(IMBH,$10^2 - 10^5 M_{\odot}$)。最大的公布的真正的IMBH动力活动星系核样本包含10个物体在X射线确认。在这里,我们提出了一个新的样本15真正的IMBH,通过确认光学选择的IMBH候选人的存在下,从星系核的辐射在X射线范围内,这增加了确认的IMBH的数量在星系中心的2.5倍。以同样的方式,99个质量为$2\cdot10^5 - 10^6 M_{\odot}$的黑洞被确认。X射线数据的来源是公开的星表、数据档案以及我们自己对XMM-牛顿、钱德拉和斯威夫特的观测。两个样本中有30%的物体的爱丁顿系数接近临界值,从0.5到1,这是一个异常高的分数。也是第一次为轻重量SMBH之间的相关性[OIII]发射线或$Hα$线的广泛组成部分和亮度在X射线范围内绘制。

英文摘要:

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.

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。

↑