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THE DISTINCTIVE FEATURE OF RELATIVISTIC STELLAR-SYSTEMS
ZHOU, Y1; Xie GZ(谢光中)2
发表期刊ASTROPHYSICS AND SPACE SCIENCE
1992-06-01
卷号192期号:1页码:113-126
DOI10.1007/BF00653266
产权排序第2完成单位
收录类别SCI
摘要In this paper we adopt the method of relativistic fluid dynamics to examine the number density distribution of stars around a massive black hole in the core of stellar clusters. We obtain extensive results, n(r) is-proportional-to r-a, 3/2 less-than-or-equal-to a less-than-or-equal-to 9/2, which include, respectively, the n(r) is-proportional-to r-7/4 power law obtained by Bahcall and Wolf and the n(r) is-proportional-to r-9/4 power law by Peebles. Since n(r) is not an observable quantity for star clusters, we also consider general relativity effects, i.e., the consequence of the bending of light, in calculating the projected density of stars in such a system. As an example we employ a massive black hole approximately 10(3) M. inlaid in the center of a globular cluster and calculate various projected densities of stars. The results show that cusp construction occurs in all cases unless the central black hole mass M = 0, and the polytropic index does not affect at all the position of the capture radius r(a). The obvious differences in the surface density is only embodied in the interior of the capture radius. At the outer regions of the core, the surface density of stars-sigma declines rapidly with a r-5 power law in all cases. These results can be applied to cases of unequal-mass and non-steady state.
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN0004-640X
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WOS记录号WOS:A1992JF45600013
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]GLOBULAR-CLUSTER
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文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/6912
专题星系研究组
通讯作者ZHOU, Y
作者单位1.International School for Advanced Studies, Trieste, Italy
2.Yunnan Observatory, Chinese Academy of Sciences, Kunming, China
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GB/T 7714
ZHOU, Y,Xie GZ. THE DISTINCTIVE FEATURE OF RELATIVISTIC STELLAR-SYSTEMS[J]. ASTROPHYSICS AND SPACE SCIENCE,1992,192(1):113-126.
APA ZHOU, Y,&Xie GZ.(1992).THE DISTINCTIVE FEATURE OF RELATIVISTIC STELLAR-SYSTEMS.ASTROPHYSICS AND SPACE SCIENCE,192(1),113-126.
MLA ZHOU, Y,et al."THE DISTINCTIVE FEATURE OF RELATIVISTIC STELLAR-SYSTEMS".ASTROPHYSICS AND SPACE SCIENCE 192.1(1992):113-126.
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