51 citations · 273 across the 29 of their papers we have counts for
14 papers · 1 filter
Quasi-periodic oscillations in Letelier black holes within Kalb-Ramond gravity embedded in a uniform external magnetic field
Ahmad Al-Badawi, Shokhzod Jumaniyozov
We investigate the dynamics of charged test particles around a Letelier black hole, i.e. a black hole surrounded by a cloud of strings (CoS), in Kalb-Ramond (KR) gravity, immersed…
Simpson-Visser regularization of the quantum Oppenheimer-Snyder-Datt black hole
Faizuddin Ahmed, Ahmad Al-Badawi, İzzet Sakallı
We study the spherical geometry from the Simpson-Visser prescription to the quantum Oppenheimer-Snyder-Datt (qOSD) black hole of loop quantum cosmology, whose…
Horizon Structure and Geodesic Properties of Simpson-Visser Black Holes in Einstein-Euler-Heisenberg Theory
Ahmad Al-Badawi
We investigate a regularized charged black hole (BH) spacetime constructed by applying the Simpson-Visser (SV) prescription to a BH in Einstein-Euler-Heisenberg (EEH) theory. The r…
Particle Dynamics and Thermodynamics of a Charged-Like Hairy Black Hole in Extended Gravitational Decoupling
M. Zeeshan Gul, Ahmad Al-Badawi, J. Andrade +1
This work focuses on the analysis of particle dynamics and the thermodynamic properties associated with a particular branch of hairy black hole solutions. These solutions are obtai…
Geodesics and thermodynamics of a -deformed anti-de Sitter black hole surrounded by a quintessence field
Faizuddin Ahmed, Ahmad Al-Badawi, Izzet Sakalli +1
We investigate the geodesic structure and thermodynamics of a -deformed Schwarzschild-anti-de Sitter black hole in a Kiselev quintessence field, where dynamics are governed by a…
An exact dyonic black hole at the integrable locus of quadratic nonlinear electrodynamics
Faizuddin Ahmed, Ahmad Al-Badawi, Izzet Sakalli
We obtain an exact dyonic black-hole solution in quadratic nonlinear electrodynamics defined by on the special locus . At this locus, the radial dependenc…
Particle dynamics and quasi-periodic oscillations of a Reissner--Nordström-like black hole in Kalb--Ramond gravity under an external magnetic test field
Faizuddin Ahmed, Ahmad Al-Badawi, Sardor Murodov +2
We investigate the dynamics of charged test particles and quasi-periodic oscillations around a Reissner--Nordström-like black hole in Kalb--Ramond (KR) gravity in the presence of a…
MCMC Constraints on Dyonic Kalb-Ramond Black Holes with a Cloud of Strings from Twin-Peak QPOs and EHT Shadows
Faizuddin Ahmed, Ahmad Al-Badawi, İzzet Sakallı
We study a dyonic black hole in a Lorentz-violating gravity that carries a background Kalb--Ramond field and is pierced by a cloud of strings. The resulting metric reduces to the r…
Are Petrov type-N and D spacetimes admitting CTCs valid in gravity?
Faizuddin Ahmed, Ahmad Al-Badawi, İzzet Sakallı
We ask whether two classical time-machine geometries, the Ori (2005) compact-vacuum-core metric and the Ahmed (2018) four-dimensional generalisation of Misner space, remain admissi…
Transfer observables of rotating acoustic black holes from ray tracing: shadow centroid, redshift asymmetry and flux imbalance
Faizuddin Ahmed, Ahmad Al-Badawi, Fernando M. Belchior +1
We construct an impact-parameter-resolved transfer framework for null acoustic rays in the rotating draining-bathtub spacetime. The formalism separates the source-independent ray g…
Particle Dynamics, Shadow and Hawking Sparsity of a Kalb-Ramond Black Hole Coupled to Nonlinear Electrodynamics
Faizuddin Ahmed, Ahmad Al-Badawi, İzzet Sakallı
We study the timelike and null geodesic structure of a static, spherically symmetric black hole sourced by a Kalb--Ramond (KR) field coupled to nonlinear electrodynamics (NED). The…
Thermodynamics and optical aspects of ModMax black holes in higher order curvature gravity with quintessence dark energy
Ahmad Al-Badawi, Usman Zafar, Abdul Jawad +1
In this work, we derive an exact black hole solution in higher-order curvature gravity by coupling an electromagnetic sector formulated within the ModMax framework to a quintessenc…
Astrophysical signatures of Kerr-Bertotti-Robinson black holes in a cloud of strings: ISCO, microquasar QPOs, and Bondi-Hoyle-Lyttleton accretion
Faizuddin Ahmed, Orhan Donmez, Ahmad Al-Badawi +1
We study test-particle dynamics in the equatorial plane of a Kerr-Bertotti-Robinson black hole (BH) immersed in a cloud of strings (CS), with mass M , rotation a, magnetic paramete…
Thermodynamics and shadow of Simpson-Visser black hole with phantom global monopoles
Ahmad Al-Badawi
We investigate the thermodynamics and shadow of a non-rotating Simpson Visser black hole with a phantom global monopole. The model is governed by three parameters: the coupling con…