Rotating black hole shadow in perfect fluid dark matter | |
Hou X(侯贤)1,2,3; Xu ZY(徐兆意)4; Wang JC(王建成)1,2,3 | |
刊名 | JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS |
2018-12-01 | |
期号 | 12页码:14 |
关键词 | GR black holes astrophysical black holes dark matter theory |
ISSN号 | 1475-7516 |
DOI | 10.1088/1475-7516/2018/12/040 |
产权排序 | 第1完成单位 |
文献子类 | Article |
英文摘要 | 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. |
学科主题 | 天文学 ; 天体物理学 ; 高能天体物理学 |
URL标识 | 查看原文 |
出版地 | TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND |
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] |
WOS关键词 | SGR A-ASTERISK ; FIELD |
WOS研究方向 | Astronomy & Astrophysics ; Physics |
语种 | 英语 |
出版者 | IOP PUBLISHING LTD |
WOS记录号 | WOS:000454307900001 |
资助机构 | National Natural Science Foundation of China[11503078, 11573060, 11661161010] |
内容类型 | 期刊论文 |
源URL | [http://ir.ynao.ac.cn/handle/114a53/18808] |
专题 | 云南天文台_高能天体物理研究组 云南天文台_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 |
推荐引用方式 GB/T 7714 | Hou X,Xu ZY,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 ZY,&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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