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THE DISTINCTIVE FEATURE OF RELATIVISTIC STELLAR-SYSTEMS
ZHOU, Y1; Xie GZ(谢光中)2
Source PublicationASTROPHYSICS AND SPACE SCIENCE
1992-06-01
Volume192Issue:1Pages:113-126
DOI10.1007/BF00653266
Contribution Rank第2完成单位
Indexed BySCI
AbstractIn 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.
Language英语
Subject AreaAstronomy & Astrophysics
SubtypeArticle
ISSN0004-640X
URL查看原文
WOS IDWOS:A1992JF45600013
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordGLOBULAR-CLUSTER
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Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/6912
Collection星系研究组
Corresponding AuthorZHOU, Y
Affiliation1.International School for Advanced Studies, Trieste, Italy
2.Yunnan Observatory, Chinese Academy of Sciences, Kunming, China
Recommended Citation
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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