Regular black holes: A short topic review

C Lan, H Yang, Y Guo, YG Miao - International Journal of Theoretical …, 2023 - Springer
The essential singularity in Einstein's gravity can be avoidable if the preconditions of
Penrose's theorem can be bypassed, ie, if the strong energy condition is broken in the …

Parameter estimation of hairy Kerr black holes from its shadow and constraints from M87

M Afrin, R Kumar, SG Ghosh - Monthly Notices of the Royal …, 2021 - academic.oup.com
The recently obtained hairy Kerr black holes, due to additional sources or surrounding fluid,
like dark matter, with conserved energy-momentum tensor, have a deviation α and primary …

A novel family of rotating black hole mimickers

J Mazza, E Franzin, S Liberati - Journal of Cosmology and …, 2021 - iopscience.iop.org
The recent opening of gravitational wave astronomy has shifted the debate about black hole
mimickers from a purely theoretical arena to a phenomenological one. In this respect …

Photon regions, shadow observables, and constraints from M87* of a charged rotating black hole

Y Meng, XM Kuang, ZY Tang - Physical Review D, 2022 - APS
Inspired by the observations of the supermassive black hole M87* by the Event Horizon
Telescope (EHT), a remarkable surge in black hole physics is to use the black hole …

Particle dynamics and gravitational weak lensing around black hole in the Kalb-Ramond gravity

F Atamurotov, D Ortiqboev, A Abdujabbarov… - The European Physical …, 2022 - Springer
In this paper, we have studied the particle dynamics, gravitational lensing and energy
processes around the black hole (BH) in Kalb–Ramond (KR) gravity. The motion of particles …

Quasinormal modes, quasiperiodic oscillations, and the shadow of rotating regular black holes in nonminimally coupled Einstein-Yang-Mills theory

K Jusufi, M Azreg-Aïnou, M Jamil, SW Wei, Q Wu… - Physical Review D, 2021 - APS
In this paper, we obtain an effective metric describing a regular and rotating magnetic black
hole (BH) solution with a Yang-Mills electromagnetic source in Einstein-Yang-Mills (EYM) …

Quasinormal modes and gray-body factors of regular black holes in asymptotically safe gravity

O Stashko - Physical Review D, 2024 - APS
Recently, Bonanno et al.[Dust collapse in asymptotic safety: A path to regular black holes,
Phys. Rev. Lett. 132, 031401 (2024) PRLTAO 0031-9007 10.1103/PhysRevLett …

Particle acceleration around rotating Einstein-Born-Infeld black hole and plasma effect on gravitational lensing

GZ Babar, F Atamurotov, S Ul Islam, SG Ghosh - Physical Review D, 2021 - APS
We consider a timelike geodesics in the background of rotating Einstein-Born-Infeld (EBI)
black hole to examine the horizon and ergosphere structure. The effective potential that …

Stable rotating regular black holes

E Franzin, S Liberati, J Mazza, V Vellucci - Physical Review D, 2022 - APS
We present a rotating regular black hole whose inner horizon has zero surface gravity for
any value of the spin parameter and is, therefore, stable against mass inflation. Our metric is …

[HTML][HTML] Observational appearances of af (R) global monopole black hole illuminated by various accretions

GP Li, KJ He - The European Physical Journal C, 2021 - Springer
In this paper, we explore three simple models of accretions on a global monopole black hole
in f (R) theory, and numerically study the corresponding observational appearances as seen …