Rotating black hole shadow in perfect fluid dark matter

doi:10.1088/1475-7516/2018/12/040

CORC > 高能物理研究所 > 中国科学院高能物理研究所 > 粒子天体物理中心

	Rotating black hole shadow in perfect fluid dark matter
	Wang, Jiancheng; Wang, JC; Xu, ZY; Xu ZY(徐兆意); Hou, Xian, Xu, Zhaoyi; Hou, X
刊名	JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
	2018
期号	12 页码:40
关键词	GR black holes astrophysical black holes dark matter theory
ISSN号	1475-7516
DOI	10.1088/1475-7516/2018/12/040
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.
WOS关键词	SGR A-ASTERISK ; FIELD
WOS研究方向	Astronomy & Astrophysics ; Physics
语种	英语
WOS记录号	WOS:000454307900001
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/286898]
专题	高能物理研究所_粒子天体物理中心
通讯作者	Xu ZY(徐兆意)
作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	Wang, Jiancheng,Wang, JC,Xu, ZY,et al. Rotating black hole shadow in perfect fluid dark matter[J]. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS,2018(12):40.
APA	Wang, Jiancheng,Wang, JC,Xu, ZY,徐兆意,Hou, Xian, Xu, Zhaoyi,&Hou, X.(2018).Rotating black hole shadow in perfect fluid dark matter.JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS(12),40.
MLA	Wang, Jiancheng,et al."Rotating black hole shadow in perfect fluid dark matter".JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS .12(2018):40.