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Article overview
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Gravitational lensing in braneworld gravity: formalism and applications | Supratik Pal
; Sayan Kar
; | Date: |
2 Jul 2007 | Abstract: | In this article, we develop a formalism different from the standard lensing
scenario and necessary for understanding lensing by gravitational fields which
arise as solutions of the effective Einstein equations on the brane. We obtain
general expressions for measurable quantities such as time delay, deflection
angle, Einstein ring, magnification, critical curves and caustics.
Subsequently, we estimate the deviations (relative to the standard lensing
scenario) in the abovementioned quantities by considering the line elements for
clusters and spiral galaxies obtained by solving the effective Einstein
equations on the brane. Our analysis reveals that gravitational lensing can be
a useful tool for testing braneworld gravity as well as the existence of extra
dimensions. | Source: | arXiv, arxiv.0707.0223 | Services: | Forum | Review | PDF | Favorites |
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