期刊
PHYSICAL REVIEW D
卷 84, 期 8, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.84.083006
关键词
-
资金
- Department of Physics of The University of Hong Kong
- European Union
- European Social Fund [TAMOP 4.2.2/B-10/1-2010-0012]
- COST Action [MP0905]
- government of the Hong Kong Special Administrative Region [HKU 701808P]
- Fundacao para a Ciencia e Tecnologia [PTDC/FIS/102742/2008, CERN/FP/109381/2009, CERN/FP/116398/2010]
- Fundação para a Ciência e a Tecnologia [CERN/FP/109381/2009] Funding Source: FCT
We discuss gravitational lensing in the Kehagias-Sfetsos space-time emerging in the framework of Horava-Lifshitz gravity. In weak lensing, we show that there are three regimes, depending on the value of (lambda) over bar = 1/omega d(2), where omega is the Horava-Lifshitz parameter and d characterizes the lensing geometry. When (lambda) over bar is close to zero, light deflection typically produces two images, as in Schwarzschild lensing. For very large (lambda) over bar, the space-time approaches flatness, therefore there is only one undeflected image. In the intermediate range of (lambda) over bar, only the upper focused image is produced due to the existence of a maximal deflection angle delta(max), a feature inexistent in the Schwarzschild weak lensing. We also discuss the location of Einstein rings, and determine the range of the Horava-Lifshitz parameter compatible with present-day lensing observations. Finally, we analyze in the strong lensing regime the first two relativistic Einstein rings and determine the constraints on the parameter range to be imposed by forthcoming experiments.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据