Quasinormal modes of renormalization group improved Dymnikova regular black holes

RA Konoplya, Z Stuchlik, A Zhidenko, AF Zinhailo - Physical Review D, 2023 - APS
We find accurate quasinormal frequencies of a quantum corrected black hole constructed in
the renormalization group theory via the coordinate-independent iterative procedure …

Quasinormal ringing of regular black holes in asymptotically safe gravity: the importance of overtones

RA Konoplya, AF Zinhailo, J Kunz… - … of Cosmology and …, 2022 - iopscience.iop.org
Asymptotically safe gravity is based on the idea that the main contribution to the
Schwarzschild-like black hole spacetime is due to the value of the gravitational coupling …

Bardeen spacetime as a quantum corrected Schwarzschild black hole: Quasinormal modes and Hawking radiation

RA Konoplya, D Ovchinnikov, B Ahmedov - Physical Review D, 2023 - APS
The Bardeen black hole holds historical significance as the first model of a regular black
hole. Recently, there have been proposed interpretations of the Bardeen spacetime as …

Testing strong gravitational lensing effects of supermassive compact objects with regular spacetimes

J Kumar, SU Islam, SG Ghosh - The Astrophysical Journal, 2022 - iopscience.iop.org
We compare and contrast gravitational lensing, in the strong field limit, by the photon sphere
in spherically symmetric regular electrically charged (REC) black holes (0< b≤ b E) and with …

Quasiperiodic oscillations, quasinormal modes and shadows of Bardeen–Kiselev Black Holes

J Rayimbaev, B Majeed, M Jamil, K Jusufi… - Physics of the Dark …, 2022 - Elsevier
In this article, we study the particle dynamics around a static and spherically symmetric
Bardeen–Kiselev black hole (BK BH) which is a solution of the Einstein-non-linear Maxwell …

Long-lived quasinormal modes and oscillatory tails of the Bardeen spacetime

SV Bolokhov - Physical Review D, 2024 - APS
The Bardeen black hole stands as the first model of a regular black hole. Driven by the
interpretations of Bardeen spacetime as a quantum-corrected Schwarzschild-like solution …

Killing horizons and surface gravities for a well-behaved three-function generalization of the Kerr spacetime

J Baines, M Visser - Universe, 2023 - mdpi.com
Thanks to the recent advent of the event horizon telescope (EHT), we now have the
opportunity to test the physical ramifications of the strong-field near-horizon regime for …

D-dimensional Bardeen–AdS black holes in Einstein–Gauss–Bonnet theory

A Kumar, DV Singh, SG Ghosh - The European Physical Journal C, 2019 - Springer
We present a D-dimensional Bardeen like Anti-de Sitter (AdS) black hole solution in Einstein–
Gauss–Bonnet (EGB) gravity, viz., Bardeen–EGB–AdS black holes. The Bardeen–EGB–AdS …

Dirac perturbations of Hayward black hole with quintessence: Quasinormal modes and greybody factor

A Al-Badawi, A Kraishan - Chinese Journal of Physics, 2024 - Elsevier
In the context of Dark Energy (DE) research, we examine the quasinormal modes (QNMs)
and greybody factors (GFs) of Dirac field perturbation in the background of a Hayward black …

Bardeen Black Holes in the Regularized 4D Einstein–Gauss–Bonnet Gravity

A Kumar, RK Walia, SG Ghosh - Universe, 2022 - mdpi.com
We obtain exact Bardeen black holes to the regularized 4 D Einstein–Gauss–Bonnet (EGB)
gravity minimally coupled with the nonlinear electrodynamics (NED). In turn, we analyze the …