Strong deflection lensing by charged black holes in scalar-tensor gravity
General Relativity and Quantum Cosmology
2014-12-01 v2
Abstract
We examine a class of charged black holes in scalar-tensor gravity as gravitational lenses. We find the deflection angle in the strong deflection limit, from which we obtain the positions and the magnifications of the relativistic images. We compare our results with those corresponding to the Reissner-Norstrom spacetime and we analyze the observational aspects in the case of the Galactic supermassive black hole.
Keywords
Cite
@article{arxiv.1408.3390,
title = {Strong deflection lensing by charged black holes in scalar-tensor gravity},
author = {Ernesto F. Eiroa and Carlos M. Sendra},
journal= {arXiv preprint arXiv:1408.3390},
year = {2014}
}
Comments
12 pages, 3 figures; v2: improved version, new references added