2021/11/30 by Naoki Tsukamoto
Physics and Astronomy · #Astrophysical Phenomena and Observations #Black Holes and Theoretical Physics #Black hole (networking) #Charged black hole #Classical mechanics #Deflection (physics) #Galaxy #General relativity #Gravitation #Gravitational lens #Photon sphere #Physics #Pulsars and Gravitational Waves Research #Quantum mechanics #Redshift #Schwarzschild metric #Schwarzschild radius #Wormhole #gr-qc
paper · pdf · doi:10.1103/physrevd.105.064013
published as Phys. Rev. D 105, 064013 (2022) · 11 pages, 5 figures, minor correction, accepted for publication in Physical Review D
arxiv created 2022/02/22 · openalex publication_date 2022/03/07 · arxiv updated 2022/03/08 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We consider gravitational lensing under a weak-field approximation and in a strong deflection limit by a Bronnikov-Kim wormhole with the same metric as the one of a wormhole which has been suggested in Einstein-Dirac-Maxwell theory. The metric approaches into the metric of an extreme charged Reissner-Nordström black hole in a black hole limit and it becomes the metric of an spatial Schwarzschild wormhole in an ultrastatic limit. In both of the black hole limit and the ultrastatic limit, the coefficient of a divergent term and the constant term of the deflection angle of a light in the strong deflection limit can be obtained exactly without expanding of parameters of the spacetime. Interestingly, in the both limits to the black hole and the ultrastatic wormhole, we obtain exactly the same coefficient and constant term in the strong deflection limit.