Strong deflection limit analysis and gravitational lensing of an Ellis wormhole
General Relativity and Quantum Cosmology
2016-12-05 v3
Abstract
Observations of gravitational lenses in strong gravitational fields give us a clue to understanding dark compact objects. In this paper, we extend a method to obtain a deflection angle in a strong deflection limit provided by Bozza [Phys. Rev. D 66, 103001 (2002)] to apply to ultrastatic spacetimes. We also discuss on the order of an error term in the deflection angle. Using the improved method, we consider gravitational lensing by an Ellis wormhole, which is an ultrastatic wormhole of the Morris-Thorne class.
Keywords
Cite
@article{arxiv.1607.07022,
title = {Strong deflection limit analysis and gravitational lensing of an Ellis wormhole},
author = {Naoki Tsukamoto},
journal= {arXiv preprint arXiv:1607.07022},
year = {2016}
}
Comments
23 pages, 1 figure, minor correction, title changed, accepted for publication in Physical Review D