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题名:
Kerr-anti-de Sitter/de Sitter black hole in perfect fluid dark matter background
作者: Xu ZY(徐兆意)1,2,3,4; Hou X(侯贤)1,3,4; Wang JC(王建成)1,2,3,4
刊名: CLASSICAL AND QUANTUM GRAVITY
出版日期: 2018-06-07
卷号: 35, 期号:11
DOI: 10.1088/1361-6382/aabcb6
学科分类: 天文学
产权排序: 第1完成单位
收录类别: SCI
通讯作者: Xu ZY(徐兆意), Email: zyxu88@ynao.ac.cn ; Hou X(侯贤), Email: xianhou.astro@gmail.com ; Wang JC(王建成), Email: jcwang@ynao.ac.cn
关键词: Kerr-AdS/dS black hole solution ; perfect fluid dark matter ; Newman-Janis method ; rotation velocity
英文摘要: We obtain the Kerr-anti-de-sitter (Kerr-AdS) and Kerr-de-sitter (Kerr-dS) black hole (BH) solutions to the Einstein field equation in the perfect fluid dark matter background using the Newman-Janis method and Mathematica package. We discuss in detail the black hole properties and obtain the following main results: (i) From the horizon equation g(rr) = 0, we derive the relation between the perfect fluid dark matter parameter alpha and the cosmological constant Lambda when the cosmological horizon r(Lambda) exists. For Lambda = 0, we find that alpha is in the range 0 < alpha < 2M for alpha > 0 and -7.18M < alpha < 0 for alpha < 0. For positive cosmological constant Lambda (Kerr-AdS BH), alpha(max) decreases if alpha > 0, and alpha(min) increases if alpha < 0. For negetive cosmological constant -Lambda (Kerr-dS BH), alpha(max) increases if alpha > 0 and alpha(min) decreases if alpha < 0; (ii) An ergosphere exists between the event horizon and the outer static limit surface. The size of the ergosphere evolves oppositely for alpha > 0 and alpha < 0, while decreasing with the increasing | alpha |. When there is sufficient dark matter around the black hole, the black hole spacetime changes remarkably; (iii) The singularity of these black holes is the same as that of rotational black holes. In addition, we study the geodesic motion using the Hamilton-Jacobi formalism and find that when alpha is in the above ranges for Lambda = 0, stable orbits exist. Furthermore, the rotational velocity of the black hole in the equatorial plane has different behaviour for different a and the black hole spin a. It is asymptotically flat and independent of alpha if alpha > 0 while is asymptotically flat only when alpha is close to zero if alpha < 0. We anticipate that Kerr-Ads/dS black holes could exist in the universe and our future work will focus on the observational effects of the perfect fluid dark matter on these black holes.
项目资助者: National Natural Science Foundation of China(11503078, 11573060, 11661161010)
语种: 英语
原文出处: 查看原文
ISSN号: 0264-9381
文章类型: Article
WOS标题词: Science & Technology ; Physical Sciences
研究领域[WOS]: Astronomy & Astrophysics ; Physics
类目[WOS]: Astronomy & Astrophysics ; Physics, Multidisciplinary ; Physics, Particles & Fields
关键词[WOS]: PROBE WMAP OBSERVATIONS ; VECTOR FIELD ; QUINTESSENCE ; ENERGY ; DYNAMICS
WOS记录号: WOS:000431146100003
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ynao.ac.cn/handle/114a53/12360
Appears in Collections:高能天体物理研究组_期刊论文
中国科学院天体结构与演化重点实验室_期刊论文

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作者单位: 1.Yunnan Observatories, Chinese Academy of Sciences, 396 Yangfangwang, Guandu District, Kunming, 650216, People's Republic of China
2.University of Chinese Academy of Sciences, Beijing, 100049, People's Republic of China
3.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, 396 Yangfangwang, Guandu District, Kunming, 650216, People's Republic of China
4.Center for Astronomical Mega-Science, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing, 100012, People's Republic of China

Recommended Citation:
Xu ZY,Hou X,Wang JC. Kerr-anti-de Sitter/de Sitter black hole in perfect fluid dark matter background[J]. CLASSICAL AND QUANTUM GRAVITY,2018,35(11).
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