Weak gravitational lensing in brane-worlds
L\'aszl\'o \'A. Gergely, Barbara Dar\'azs
TL;DR
This paper derives the second order light deflection angle caused by brane black holes with mass and tidal charge, highlighting when these higher order effects become significant in weak gravitational lensing.
Contribution
It introduces a second order perturbative calculation of light deflection by brane black holes, extending previous first order analyses.
Findings
Second order contributions can be significant in certain regimes.
Derived explicit formulas for deflection angles involving tidal charge.
Provides insights into gravitational lensing in brane-world scenarios.
Abstract
We derive the deflection angle of light rays caused by a brane black hole with mass m and tidal charge q in the weak lensing approach, up to the second order in perturbation theory. We point out when the newly derived second order contributions become important.
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Taxonomy
TopicsGalaxies: Formation, Evolution, Phenomena · Cosmology and Gravitation Theories · Astronomy and Astrophysical Research