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 …
[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 …
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 …
Probing hairy black holes caused by gravitational decoupling using quasinormal modes and greybody bounds
Gravitational decoupling can add hair to the black holes by adding extra sources. The
quasinormal modes of a hairy black hole caused by gravitational decoupling for the …
quasinormal modes of a hairy black hole caused by gravitational decoupling for the …
[HTML][HTML] Shadow, absorption and Hawking radiation of a Schwarzschild black hole surrounded by a cloud of strings in Rastall gravity
Q Li, C Ma, Y Zhang, ZW Lin, PF Duan - The European Physical Journal C, 2022 - Springer
This paper studies the black hole shadow, absorption cross section, and Hawking radiation
of a massless scalar field in the background of a static spherically symmetric black hole …
of a massless scalar field in the background of a static spherically symmetric black hole …
Superradiance in Kerr-like black holes
E Franzin, S Liberati, M Oi - Physical Review D, 2021 - APS
Recent strong-field regime tests of gravity are so far in agreement with general relativity. In
particular, astrophysical black holes appear all to be consistent with the Kerr spacetime, but …
particular, astrophysical black holes appear all to be consistent with the Kerr spacetime, but …
Asymmetric wormholes in Palatini gravity: Energy conditions, absorption, and quasibound states
RB Magalhães, A Masó-Ferrando, GJ Olmo… - Physical Review D, 2023 - APS
We investigate the scalar absorption spectrum of wormhole solutions constructed via the
recently developed thin-shell formalism for Palatini f (R) gravity. Such wormholes come from …
recently developed thin-shell formalism for Palatini f (R) gravity. Such wormholes come from …
Rectifying no-hair theorems in Gauss-Bonnet theory
A Papageorgiou, C Park, M Park - Physical Review D, 2022 - APS
We revisit the no-hair theorems in Einstein-Scalar-Gauss-Bonnet theory with a general
coupling function between the scalar and the Gauss-Bonnet term in four dimensional …
coupling function between the scalar and the Gauss-Bonnet term in four dimensional …
Gray-body factor and absorption of the Dirac field in ESTGB gravity
Q Li, C Ma, Y Zhang, ZW Lin, PF Duan - Chinese Journal of Physics, 2022 - Elsevier
The gray-body factor and the absorption cross section of the 4D ESTGB gravity with a mode
of nonlinear electrodynamics for the massless Dirac field are studied in this paper. The …
of nonlinear electrodynamics for the massless Dirac field are studied in this paper. The …
Parametrized black holes: scattering investigation
We study the scattering of light-like geodesics and massless scalar waves by a static
Konoplya–Zhidenko black hole, considering the case that the parametrized black hole …
Konoplya–Zhidenko black hole, considering the case that the parametrized black hole …