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Rotating black hole shadow in perfect fluid dark matter
Hou X(侯贤)1,2,3; Xu. Zhaoyi4; Wang JC(王建成)1,2,3
发表期刊JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
2018-12-01
期号12页码:14
DOI10.1088/1475-7516/2018/12/040
产权排序第1完成单位
收录类别SCI
关键词GR black holes astrophysical black holes dark matter theory
摘要

We study analytically the shadow cast by the rotating black hole in the perfect fluid dark matter. The apparent shape of the shadow depends upon the black hole spin a and the perfect fluid dark matter intensity parameter k (k > 0). In general, the shadow is a perfect circle in the non-rotating case (a = 0) and a deformed one in the rotating case (a not equal 0). The deformation gets more and more significant with the increasing a, similar to the Schwarzschild and Kerr black holes. In addition, there exists a reflection point (k) over tilde (0). When k < <(k)over tilde>(0), the size of the shadow decreases with the increasing k and the distortion increases with the increasing k. When k > 0, (k) over tilde (0), the size of the shadow increases with the increasing k and the distortion decreases with the increasing k. Furthermore, the energy emission rate of the black hole in the perfect fluid dark matter increases with the increasing k and the peak of the emission shifts to higher frequencies. Finally, we propose that to observe the effect of the black hole spin a and the perfect fluid dark matter intensity k on the shadow of the black hole Sgr A* at the center of the Milky Way, highly improved techniques would be necessary for the development of future astronomical instruments.

资助项目National Natural Science Foundation of China[11503078] ; National Natural Science Foundation of China[11573060] ; National Natural Science Foundation of China[11661161010]
项目资助者National Natural Science Foundation of China[11503078, 11573060, 11661161010]
语种英语
学科领域天文学 ; 天体物理学 ; 高能天体物理学
学科门类理学 ; 理学::天文学
文章类型Article
出版者IOP PUBLISHING LTD
出版地TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
ISSN1475-7516
URL查看原文
WOS记录号WOS:000454307900001
WOS研究方向Astronomy & Astrophysics ; Physics
WOS类目Astronomy & Astrophysics ; Physics, Particles & Fields
关键词[WOS]SGR A-ASTERISK ; FIELD
引用统计
被引频次:67[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/18808
专题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
通讯作者Hou X(侯贤)
作者单位1.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.Key Laboratory of Particle Astrophysics, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, P.R. China
第一作者单位中国科学院云南天文台
通讯作者单位中国科学院云南天文台
推荐引用方式
GB/T 7714
Hou X,Xu. Zhaoyi,Wang JC. Rotating black hole shadow in perfect fluid dark matter[J]. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS,2018(12):14.
APA Hou X,Xu. Zhaoyi,&Wang JC.(2018).Rotating black hole shadow in perfect fluid dark matter.JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS(12),14.
MLA Hou X,et al."Rotating black hole shadow in perfect fluid dark matter".JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS .12(2018):14.
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