QPOs and circular orbits around black holes in Chaplygin-like cold dark matter

B Rahmatov, M Zahid, J Rayimbaev, R Rahim… - Chinese Journal of …, 2024 - Elsevier
Understanding the nature of dark energy in the universe is an actual issue in theoretical
astrophysics and cosmology. One way to do it is by probing dark fluids with different …

Shadow and quasinormal modes of rotating charged black holes in Kalb–Ramond gravity and implications from EHT data

M Zahid, F Sarikulov, C Shen, J Rayimbaev… - Chinese Journal of …, 2024 - Elsevier
The recent observations of the Event Horizon Telescope for the supermassive black holes
M87* and Sgr A* can potentially test gravity theories and acquire further knowledge on black …

Shadows and quasinormal modes of rotating black holes in Horndeski theory: Parameter constraints using EHT observations of M87* and Sgr A

M Zahid, O Yunusov, C Shen, J Rayimbaev… - Physics of the Dark …, 2025 - Elsevier
One way to test the presence of scalar & vector fields in the spacetime of black holes is to get
constraints on the fields and black hole parameters using astrophysical observations such …

Construction of wormhole under embedded approach through dark matter halos in F (T, TG) gravity

A Ashraf, WX Ma, F Javed, SK Maurya… - Physics of the Dark …, 2025 - Elsevier
In this study, we explore generalized Ellis–Bronnikov and embedded wormhole solutions
within the context of F (T, TG) gravity with an anisotropic matter source. To achieve the …

Characterization of wormhole spacetimes supported by a covariant action-dependent Lagrangian theory

I Ayuso, R Lazkoz - Physical Review D, 2024 - APS
In this work, we undertake an analysis of new wormhole solutions within an action-
dependent Lagrangian framework. These geometries can be traversable and supported by …

Exploring embedded wormhole solutions and thermodynamics in extended teleparallel gravity

A Ditta, G Mustafa, A Mahmood - Journal of High Energy Astrophysics, 2025 - Elsevier
This work investigates the wormhole thermodynamics in teleparallel Rastall gravity using the
Karmarkar condition. We apply the first law of wormhole thermodynamics to evaluate the …

Traversable Wormholes and their shadows in 4D Einstein–Gauss–Bonnet Gravity: An analytic description

M Chakraborty, S Chakraborty - Physics of the Dark Universe, 2025 - Elsevier
Abstract Einstein–Gauss–Bonnet gravity (EGB) in 4D started its journey in 2020, after a
regularization on D→ 4 limit of EGB gravity considering a rescaled GB coupling constant as …

Comparative analysis of perturbed f (R) gravity and perturbed rastall gravity models in describing cosmic evolution from early to late universe relative to the ΛCDM …

M Yarahmadi, A Salehi, H Mousavi - Physica Scripta, 2024 - iopscience.iop.org
This study conducts a meticulous examination of the cosmological implications inherent in
Rastall gravity and f (R) gravity models, assessing their efficacy across distinct cosmic …