Shadows and strong gravitational lensing: a brief review

PVP Cunha, CAR Herdeiro - General Relativity and Gravitation, 2018 - Springer
For ultra compact objects, light rings and fundamental photon orbits (FPOs) play a pivotal
role in the theoretical analysis of strong gravitational lensing effects, and of BH shadows in …

Rotating charged black hole in 4D Einstein–Gauss–Bonnet gravity: Photon motion and its shadow

U Papnoi, F Atamurotov - Physics of the Dark Universe, 2022 - Elsevier
We construct a charged rotating black hole in 4D Einstein–Gauss–Bonnet (EGB) gravity
starting from charged black hole in 4D EGB gravity using complex coordinate …

Horizon-scale tests of gravity theories and fundamental physics from the Event Horizon Telescope image of Sagittarius A

S Vagnozzi, R Roy, YD Tsai, L Visinelli… - … and Quantum Gravity, 2023 - iopscience.iop.org
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 …

Constraints on black-hole charges with the 2017 EHT observations of M87

P Kocherlakota, L Rezzolla, H Falcke, CM Fromm… - Physical Review D, 2021 - APS
Our understanding of strong gravity near supermassive compact objects has recently
improved thanks to the measurements made by the Event Horizon Telescope (EHT). We use …

[HTML][HTML] Shadow, lensing, quasinormal modes, greybody bounds and neutrino propagation by dyonic ModMax black holes

RC Pantig, L Mastrototaro, G Lambiase… - The European Physical …, 2022 - Springer
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 …

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 …

Shadows and gravitational weak lensing by the Schwarzschild black hole in the string cloud background with quintessential field

G Mustafa, F Atamurotov, I Hussain… - Chinese …, 2022 - iopscience.iop.org
Shadows and gravitational weak lensing by the Schwarzschild black hole in the string cloud
background with quintessential field - IOPscience This site uses cookies. By continuing to use …

Photon spheres and spherical accretion image of a hairy black hole

Q Gan, P Wang, H Wu, H Yang - Physical Review D, 2021 - APS
In this paper, we first consider null geodesics of a class of charged, spherical and
asymptotically flat hairy black holes in an Einstein-Maxwell-scalar theory with a nonminimal …

Black hole shadow in an asymptotically flat, stationary, and axisymmetric spacetime: The Kerr-Newman and rotating regular black holes

N Tsukamoto - Physical Review D, 2018 - APS
The shadow of a black hole can be one of the strong observational evidences for stationary
black holes. If we see shadows at the center of galaxies, we would say whether the …

Photon ring and observational appearance of a hairy black hole

Q Gan, P Wang, H Wu, H Yang - Physical Review D, 2021 - APS
Recently, the image of a Schwarzschild black hole with an accretion disk has been revisited,
and it showed that the “photon ring,” defined as highly bent light rays that intersect the disk …