Horizon-scale tests of gravity theories and fundamental physics from the Event Horizon Telescope image of Sagittarius A
Horizon-scale images of black holes (BHs) and their shadows have opened an
unprecedented window onto tests of gravity and fundamental physics in the strong-field …
unprecedented window onto tests of gravity and fundamental physics in the strong-field …
Nonlinear electrodynamics effects on the black hole shadow, deflection angle, quasinormal modes and greybody factors
In this paper, we discuss the effects of nonlinear electrodynamics (NED) on non-rotating
black holes, parametrized by the field coupling parameter β and magnetic charge parameter …
black holes, parametrized by the field coupling parameter β and magnetic charge parameter …
Deriving weak deflection angle by black holes or wormholes usingGauss-Bonnet theorem
In this review, various researches on finding the bending angle of light deflected by a
massive gravitating object which regard the Gauss-Bonnet theorem as the premise have …
massive gravitating object which regard the Gauss-Bonnet theorem as the premise have …
[HTML][HTML] Shadow, lensing, quasinormal modes, greybody bounds and neutrino propagation by dyonic ModMax black holes
Motivated by recent work on the Modified Maxwell (ModMax) black holes [Phys Lett B
10.1016/j. physletb. 2020.136011], which are invariant in duality rotations and conformal …
10.1016/j. physletb. 2020.136011], which are invariant in duality rotations and conformal …
Probing a non-linear electrodynamics black hole with thin accretion disk, shadow, and deflection angle with M87* and Sgr A* from EHT
Non-linear interaction between the electromagnetic fields (EMF) occurs when vacuum
polarization in quantum electrodynamics (QED) happens. The field of non-linear …
polarization in quantum electrodynamics (QED) happens. The field of non-linear …
[HTML][HTML] Wormhole solutions in symmetric teleparallel gravity
In this letter we obtain wormhole solutions from the Karmarkar condition in f (Q) gravity
formalism, in which Q is the nonmetricity scalar. We show that the combination of such …
formalism, in which Q is the nonmetricity scalar. We show that the combination of such …
Gravitational deflection of light and shadow cast by rotating Kalb-Ramond black holes
The nonminimal coupling of the nonzero vacuum expectation value of the self-interacting
antisymmetric Kalb-Ramond field with gravity leads to a power-law hairy black hole having a …
antisymmetric Kalb-Ramond field with gravity leads to a power-law hairy black hole having a …
Strong gravitational lensing and shadow constraint from M87* of slowly rotating Kerr-like black hole
XM Kuang, A Övgün - Annals of Physics, 2022 - Elsevier
Motivated by (i) more and more interest in strong gravitational lensing by supermassive
black holes due to the achievement of EHT observations,(ii) the ongoing popular topic on …
black holes due to the achievement of EHT observations,(ii) the ongoing popular topic on …
Gravitational lensing by black holes in the 4D Einstein-Gauss-Bonnet gravity
Recently, a non-trivial 4D Einstein-Gauss-Bonnet (EGB) theory of gravity, by rescaling the
GB coupling parameter as α/(D− 4), was formulated in [1], which bypasses Lovelock's …
GB coupling parameter as α/(D− 4), was formulated in [1], which bypasses Lovelock's …
Constraints on charged symmergent black hole from shadow and lensing
In this paper, we report on exact charged black hole solutions in symmergent gravity with
Maxwell field. Symmergent gravity induces the gravitational constant G, quadratic curvature …
Maxwell field. Symmergent gravity induces the gravitational constant G, quadratic curvature …