Strong deflection limit analysis and gravitational lensing of an Ellis wormhole

Naoki Tsukamoto
Phys. Rev. D 94, 124001 – Published 1 December 2016

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.

  • Figure
  • Received 24 July 2016

DOI:https://doi.org/10.1103/PhysRevD.94.124001

© 2016 American Physical Society

Physics Subject Headings (PhySH)

  1. Research Areas
Gravitation, Cosmology & Astrophysics

Authors & Affiliations

Naoki Tsukamoto*

  • School of Physics, Huazhong University of Science and Technology, Wuhan 430074, China

  • *tsukamoto@rikkyo.ac.jp

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Issue

Vol. 94, Iss. 12 — 15 December 2016

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