Gravitational lensing in the strong field limit for Kar's metric
General Relativity and Quantum Cosmology
2016-03-15 v3
Abstract
In this paper we calculate the strong field limit deflection angle for a light ray passing near a scalar charged spherically symmetric object, described by a metric which comes from the low-energy limit of heterotic string theory. Then, we compare the expansion parameters of our results with those obtained in the Einstein's canonical frame, obtained by a conformal transformation, and we show that, at least at first order, the results do not agree.
Keywords
Cite
@article{arxiv.1410.4190,
title = {Gravitational lensing in the strong field limit for Kar's metric},
author = {Carlos A. Benavides and Alejandro Cardenas-Avendano and Alexis Larranaga},
journal= {arXiv preprint arXiv:1410.4190},
year = {2016}
}
Comments
v3: 18 pages, 5 figures, references and an Appendix added