Strong deflection lensing by charged black holes in scalar–tensor gravity

2014/08/31 by Ernesto F. Eiroa, Carlos M. Sendra
Physics and Astronomy · #Astrophysical Phenomena and Observations #Astrophysics #Black Holes and Theoretical Physics #Classical mechanics #Deflection (physics) #Galaxy #Gravitation #Gravitational lens #Mathematical physics #Physics #Pulsars and Gravitational Waves Research #Quantum mechanics #Redshift #Spacetime #Supermassive black hole #gr-qc

paper · pdf · doi:10.1140/epjc/s10052-014-3171-1

published as Eur. Phys. J. C (2014) 74:3171 · 12 pages, 3 figures; v2: improved version, new references added

openalex publication_date 2014/11/01 · arxiv created 2014/11/28 · arxiv updated 2014/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

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–Norström spacetime and we analyze the observational aspects in the case of the Galactic supermassive black hole.

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