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Black hole space-time in dark matter halo
Xu ZY(徐兆意)1,2,3; Hou X(侯贤)1,2,3; Gong XB(龚小波)1,2,3,4; Wang JC(王建成)1,2,3
Source PublicationJOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
2018-09-01
Issue9Pages:11
DOI10.1088/1475-7516/2018/09/038
Contribution Rank第1完成单位
Indexed BySCI
KeywordGR black holes gravity
Abstract

For the first time, we obtain the analytical form of a stationary black hole space-time metric in dark matter halos. First, using the relation between the rotational velocity (in the equatorial plane) and the spherically symmetric space-time metric coefficients, we obtain the space-time metric for pure dark matter. By considering the dark matter halo in spherically symmetric space-time as part of the energy-momentum tensors in the Einstein field equation, we then obtain the spherically symmetric black hole solutions with a dark matter halo. Finally, utilizing the Newman-Janis method, we further generalize to rotational black holes. As examples, we obtain the space-time metric of black holes surrounded by Cold Dark Matter and Scalar Field Dark Matter halos, respectively. Our main results regarding the interaction between black holes and dark matter halos are as follows: (i) for both dark matter models, the density profile always produces a "cusp" phenomenon at small scales; (ii) the dark matter halo increases the black hole horizon but shrinks the ergosphere, while the magnitude is small; (iii) dark matter does not change the singularity of black holes. These results are useful to study the interaction of a stationary black hole and dark matter halo system. Particularly, the "cusp" produced at the 0 similar to 1 kpc scale would be observable in the Milky Way. Perspectives on future work regarding the applications of our results in astrophysics are also briefly discussed.

Funding ProjectNational Natural Science Foundation of China[11503078] ; National Natural Science Foundation of China[11573060] ; National Natural Science Foundation of China[11661161010]
Funding OrganizationNational Natural Science Foundation of China[11503078, 11573060, 11661161010]
Language英语
Subject Area天文学
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeArticle
PublisherIOP PUBLISHING LTD
Publication PlaceTEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
ISSN1475-7516
URL查看原文
WOS IDWOS:000445609800004
WOS Research AreaAstronomy & Astrophysics ; Physics
WOS SubjectAstronomy & Astrophysics ; Physics, Particles & Fields
WOS KeywordROTATION CURVES ; DENSITY PROFILE ; SPIRAL GALAXIES ; GALACTIC-CENTER ; ANNIHILATION
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/17920
Collection高能天体物理研究组
中国科学院天体结构与演化重点实验室
Corresponding AuthorXu ZY(徐兆意); Hou X(侯贤); Gong XB(龚小波); Wang JC(王建成)
Affiliation1.Yunnan Observatories, Chinese Academy of Sciences, 396 Yangfangwang, Guandu District, Kunming, 650216 P.R. China
2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, 396 Yangfangwang, Guandu District, Kunming, 650216 P.R. China
3.Center for Astronomical Mega-Science, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing, 100012 P.R. China
4.University of Chinese Academy of Sciences, Beijing, 100049 P.R. China
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Corresponding Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Xu ZY,Hou X,Gong XB,et al. Black hole space-time in dark matter halo[J]. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS,2018(9):11.
APA Xu ZY,Hou X,Gong XB,&Wang JC.(2018).Black hole space-time in dark matter halo.JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS(9),11.
MLA Xu ZY,et al."Black hole space-time in dark matter halo".JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS .9(2018):11.
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