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 …
Testing dynamical torsion effects on the charged black hole's shadow, deflection angle and greybody with M87* and Sgr. A* from EHT
Poincaré Gauge's theory of gravity is the most noteworthy alternative extension of general
relativity that has a correspondence between spin and spacetime geometry. In this paper …
relativity that has a correspondence between spin and spacetime geometry. In this paper …