Strong gravitational lensing in a black-hole spacetime dominated by dark energy

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	Strong gravitational lensing in a black-hole spacetime dominated by dark energy
	Cai, RG
刊名	PHYSICAL REVIEW D
	2013
卷号	88 期号:10 页码:104007
关键词	SCALAR FIELD GALAXIES PARTICLE GEOMETRY LAMBDA STARS
ISSN号	1550-7998
通讯作者	Ding, CK (reprint author), Hunan Univ Humanities Sci & Technol, Dept Phys & Informat Engn, Loudi 417000, Hunan, Peoples R China.
英文摘要	We study the influence of phantom fields on strong field gravitational lensing. Supposing that the gravitational field of the supermassive central object of the Galaxy is described by a phantom black hole metric, we estimate the numerical values of the coefficients and observations and find that the influence of the phantom fields is somewhat similar to that of the electric charge in a Reissner-Nordstrom black hole, i.e., the deflect angle and angular separation increase with the phantom constant b. However, other observations are contrary to the Reissner-Nordstrom case and show the effects of dark energy, such as (i) compressing the usual black hole and more powerfully attracting photons, (ii) making the relativistic Einstein ring larger than that of the usual black hole, and (iii) not weakening the usual relative magnitudes, which will facilitate observations.
学科主题	Physics
收录类别	SCI
资助信息	National Natural Science Foundation of China [11247013]; Hunan Provincial NSFC [11JJ3014]; Scientific Research Fund of the Hunan Provincial Education Department [11B067]; Foundation for the Author of Hunan Provincial Excellent Doctoral Dissertation [YB2012B034]; Aid program for the Science and Technology Innovative Research Team in Higher Educational Institutions of Hunan Province
原文出处	http://dx.doi.org/10.1103/PhysRevD.88.104007
语种	英语
WOS记录号	WOS:000326827200004
公开日期	2014-04-25
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/15235]
专题	理论物理研究所_理论物理所1978-2010年知识产出
推荐引用方式 GB/T 7714	Cai, RG. Strong gravitational lensing in a black-hole spacetime dominated by dark energy[J]. PHYSICAL REVIEW D,2013,88(10):104007.
APA	Cai, RG.(2013).Strong gravitational lensing in a black-hole spacetime dominated by dark energy.PHYSICAL REVIEW D,88(10),104007.
MLA	Cai, RG."Strong gravitational lensing in a black-hole spacetime dominated by dark energy".PHYSICAL REVIEW D 88.10(2013):104007.