天文学进展2016，Vol.34Issue(1)：37-49,13.DOI:10.3969/j.issn.1000-8349.2016.01.03
球状星团内中等质量黑洞的探测
Detection of Intermediate-Mass Black Holes in Globular Clusters
摘要
Abstract
Empirical evidence for both stellar-mass black holes (MBH < 102Mfl) and su-permassive black holes (SMBHs, MBH>105Mfl) is well established. However, it is not the case for intermediate-mass black hole (IMBHs, 102Mfl < MBH < 105Mfl). It is confirmed that the mass of a SMBH is strongly correlated with the central stellar velocity dispersionσ of its host galaxy, which is called as the MBH?σ relation. Some people have attempted to extrapolate the relation down the mass scale: the case for central IMBHs in globular clusters, and to detect and discover observationally such black holes, for which cusp clusters are often used as candidates. Different approaches can be taken to search central IMBHs in globular clusters, in-cluding kinematics analyses, star density profile, X-ray and radio detections, among which kinematical approach has been used most frequently. In order to obtain kinematical data for member stars of globular clusters, ground-based/space spectroscopic and astrometric ob-servations should be made, from which line-of-sight velocities and proper motions of cluster members can be obtained respectively. So far as the above issue is concerned, the most researches and discussion have been made for three globular clusters: M15 andωCen in the Milky Way Galaxy and G1 in Andromeda. However, in some decades there have been arguments among different viewpoints for all these three clusters and some other globular clusters. Some people hold that, based on observational facts, there exist central IMBHs in the globular clusters, and others consider these observational facts could be explained equally well by the presence of a concentration of stellar remnants (white dwarfs, neutron stars and stellar-mass black holes) near the cluster center without a massive IMBH. In brief, there has not yet got the unanimous and convincing conclusion about the problem whether central IMBHs in globular clusters exist or not.关键词
银河系/河外星系/球状星团/尖峰星团/黑洞/质量-速度弥散度关系Key words
Milky Way Galaxy/external galaxy/globular cluster/cusp cluster/black hole/mass-velocity dispersion relation分类
天文与地球科学引用本文复制引用
赵君亮..球状星团内中等质量黑洞的探测[J].天文学进展,2016,34(1):37-49,13.基金项目
国家自然科学基金(11373054) （11373054）
中国科学院战略性先导专项B 类(XDB09010100) （XDB09010100）
