球状星团中的大质量黑洞最初满足星系标度关系吗？
Did massive black holes in globular clusters initially satisfy galactic scaling relations?
摘要：
星系中心的超大质量黑洞（SMBH，M_BH=10^6-10^11 Msun）的质量与宿主恒星椭球体的质量和速度色散有关。一个关键的问题是这些关系是如何产生的，以及它们在黑洞质量的范围内保持不变。据推测，中等质量黑洞（IMBH，M_BH=10^2-10^5 Msun）可能在SMBH的生长中起着重要作用。最近在银河系球状星团中发现了一些IMBH，但它们的质量与SMBH的星系标度关系不一致。在这封信中，我们得到的GC使用标准的分析演化模型，其中的自由参数是固定的独立约束的初始属性。我们发现，所观察到的IMBH质量最初遵循银河系SMBH标度关系，随后移动这些关系，由于其主机GC的动力学演化。本文最后简要讨论了大质量黑洞增长的不确定性及其可能的普遍性。
英文摘要：
The masses of supermassive black holes (SMBHs, M_BH=10^6-10^11 Msun) in the centres of galaxies are related to the host stellar spheroid mass and velocity dispersion. A key question is how these relations originate, and over which range of black hole masses they hold. It has been speculated that intermediate-mass black holes (IMBHs, M_BH=10^2-10^5 Msun) could play a fundamental role in the growth of SMBHs. A handful of IMBHs has recently been detected in Galactic globular clusters (GCs), but their masses are inconsistent with the galactic scaling relations of SMBHs. In this Letter, we derive the initial properties of the GCs using a standard analytical evolutionary model, of which the free parameters are fixed by independent constraints. We find that the observed IMBH masses initially followed the galactic SMBH scaling relations, and subsequently moved off these relations due to the dynamical evolution of their host GCs. This work is concluded with a brief discussion of the uncertainties and the implications of our results for the possible universality of massive black hole growth.
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