The 4D Einstein–Gauss–Bonnet theory of gravity: a review

PGS Fernandes, P Carrilho, T Clifton… - … and Quantum Gravity, 2022 - iopscience.iop.org
We review the topic of 4D Einstein–Gauss–Bonnet (4DEGB) gravity, which has been the
subject of considerable interest over the past two years. Our review begins with a general …

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 …

Gravitational lensing in 4-D Einstein–Gauss–Bonnet gravity in the presence of plasma

GZ Babar, F Atamurotov, AZ Babar - Physics of the Dark Universe, 2021 - Elsevier
In this paper we have assumed a weak-field regime to explore the gravitational lensed
photons in a 4 dimensional Einstein–Gauss–Bonnet gravity, which is very much in the …

Observational constraints on maximum mass limit and physical properties of anisotropic strange star models by gravitational decoupling in Einstein–Gauss–Bonnet …

SK Maurya, KN Singh, M Govender… - Monthly Notices of the …, 2023 - academic.oup.com
In this work, we are guided by the gravitational wave events GW 170817 and GW 190814
together with observations of neutron stars PSR J1614-2230, PSR J1903+ 6620, and LMC X …

Shadow, deflection angle and quasinormal modes of Born-Infeld charged black holes

K Jafarzade, MK Zangeneh… - Journal of Cosmology and …, 2021 - iopscience.iop.org
In this paper, we consider black holes in the consistent Aoki-Gorji-Mukohyama theory of the
four-dimensional Einstein-Gauss-Bonnet (4D EGB) gravity in the presence of Born-Infeld (BI) …

Black Hole Solutions with Dark Matter Halos in the Four‐Dimensional Einstein‐Gauss‐Bonnet Gravity

A Errehymy, SK Maurya, G Mustafa… - Fortschritte der …, 2023 - Wiley Online Library
Black holes (BHs) convey information about different matter‐energy distributions in their
immediate environment, as they bear the imprints of the intrinsic spacetime geometry and …

Gravitationally decoupled strange star model beyond the standard maximum mass limit in Einstein–Gauss–Bonnet gravity

SK Maurya, KN Singh, M Govender… - The Astrophysical …, 2022 - iopscience.iop.org
The recent theoretical advance known as the minimal geometric deformation (MGD) method
has initiated renewed interest in investigating higher-curvature gravitational effects in …

Shadow of axisymmetric, stationary, and asymptotically flat black holes in the presence of plasma

J Badía, EF Eiroa - Physical Review D, 2021 - APS
We study the shadow produced by a class of rotating black holes surrounded by plasma.
The metric for these black holes arises by applying the Newman-Janis algorithm to a family …

[HTML][HTML] Black hole with confining electric potential in scalar-tensor description of regularized 4-dimensional Einstein-Gauss-Bonnet gravity

A Övgün - Physics Letters B, 2021 - Elsevier
In this paper, we analytically present an exact confining charged black hole solution to the
scalar-tensor description of regularized 4-dimensional Einstein-Gauss-Bonnet gravity …

Gravity with a generalized conformal scalar field: theory and solutions

PGS Fernandes - Physical Review D, 2021 - APS
We naturally extend general relativity with a conformally coupled scalar field by only
requiring conformal invariance of the scalar field equation of motion and not of the action …