Weak gravitational lensing in brane-worlds

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.

7 pages, to appear in the Proceedings of the FIKUT4 Conference, Publications of the Astronomy Department of Eötvös University, PADEU vol. 17 (2006)