[HTML][HTML] 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 …

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 …

Primordial Black Hole Merger Rate in f (R) Gravity

S Fakhry - The Astrophysical Journal, 2024 - iopscience.iop.org
Primordial black holes (PBHs) are known as one of the potential candidates for dark matter.
They are expected to have formed due to the direct gravitational collapse of density …

Primordial Black Hole–Neutron Star Merger Rate in Modified Gravity

S Fakhry, M Shiravand, M Farhang - The Astrophysical Journal, 2024 - iopscience.iop.org
In this work, we investigate the merger rate of primordial black hole–neutron star (PBH-NS)
binaries in two widely studied modified gravity (MG) models: Hu–Sawicki f (R) gravity and …

Null geodesics and shadow of 4D Einstein–Gauss–Bonnet black holes surrounded by quintessence

M Heydari-Fard, M Heydari-Fard - International Journal of Modern …, 2022 - World Scientific
We study the properties of the null geodesics of four-dimensional Einstein–Gauss–Bonnet
(4D EGB) black holes surrounded by quintessence matter, recently derived by Shah et …

Effect of a high-precision semianalytical mass function on the merger rate of primordial black holes in dark matter halos

S Fakhry, A Del Popolo - Physical Review D, 2023 - APS
In this work, we study the effect of a high-precision semianalytical mass function on the
merger rate of primordial black holes (PBHs) in dark matter halos. For this purpose, we first …

[HTML][HTML] Structure formation in various dynamical dark energy scenarios

M Reyhani, M Najafi, JT Firouzjaee… - Physics of the Dark …, 2024 - Elsevier
This research investigates the impact of the nature of Dark Energy (DE) on structure
formation, focusing on the matter power spectrum and the Integrated Sachs–Wolfe effect …

Compact binary merger rate in dark-matter spikes

S Fakhry, Z Salehnia, A Shirmohammadi… - The Astrophysical …, 2023 - iopscience.iop.org
Today, the existence of supermassive black holes (SMBHs) in the center of galactic halos is
almost confirmed. An extremely dense region referred to as dark-matter spike is expected to …

The integrated Sachs–Wolfe effect in interacting dark matter–dark energy models

MG Yengejeh, S Fakhry, JT Firouzjaee… - Physics of the Dark …, 2023 - Elsevier
Interacting dark matter–dark energy (IDMDE) models can be considered as one of the
present challenges that may affect cosmic structures. The main idea of such models is that …

On charged black holes in 4D Lovelock theory coupled to ModMax nonlinear electrodynamics

Z Amirabi - Annals of Physics, 2022 - Elsevier
The ModMax nonlinear electrodynamics is a recently proposed model which possesses
maximally symmetries among the well-known nonlinear electrodynamics models. This …