Strong deflection lensing by charged black holes in scalar-tensor gravity
arXiv:1408.3390 · doi:10.1140/epjc/s10052-014-3171-1
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.
12 pages, 3 figures; v2: improved version, new references added
References in corpus (25)
- Dark energy cosmology: the equivalent description via different theoretical models and cosmography tests
- Measurement of the Kerr Spin Parameter by Observation of a Compact Object's Shadow
- Relativistic images of Schwarzschild black hole lensing
- Time delay and magnification centroid due to gravitational lensing by black holes and naked singularities
- Apparent shape of super-spinning black holes
- Null geodesics and shadow of a rotating black hole in extended Chern-Simons modified gravity
- Shadow of a Kaluza-Klein rotating dilaton black hole
- Strong field gravitational lensing in the deformed Hǒrava-Lifshitz black hole
- Regular black holes and black universes
- Hidden symmetries, null geodesics, and photon capture in the Sen black hole
- Kerr black hole lensing for generic observers in the strong deflection limit
- A comparison of approximate gravitational lens equations and a proposal for an improved new one
- Shape and position of the shadow in the Tomimatsu-Sato space-time
- Strong deflection limit of black hole gravitational lensing with arbitrary source distances
- Gravitational lensing by a regular black hole
- Braneworld black hole gravitational lens: Strong field limit analysis
- Kerr-Sen dilaton-axion black hole lensing in the strong deflection limit
- Precise analytic treatment of Kerr and Kerr-(anti) de Sitter black holes as gravitational lenses
- Formalism for testing theories of gravity using lensing by compact objects. III: Braneworld gravity
- Gravitational lensing by massless braneworld black holes
- Gravitational Effects of Rotating Braneworld Black Holes
- Particle motion and gravitational lensing in the metric of a dilaton black hole in a de Sitter universe
- Light paths of normal and phantom Einstein-Maxwell-dilaton black holes
- Gravitational lensing in braneworld gravity: formalism and applications
- Charged black holes and unusual wormholes in scalar-tensor gravity