4 citations · 5 across the 29 of their papers we have counts for
34 papers
Dirac oscillator in a helically twisted spacetime with axial torsion
Matheus D. Moro, Fabiano M. Andrade, Faizuddin Ahmed +1
We investigate the Dirac oscillator in a helically twisted spacetime endowed with a uniform axial torsion. Starting from an orthonormal coframe, we compute the Levi--Civita spin co…
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…
ModMax black hole surrounded by perfect-fluid dark matter in Lorentz-violating Kalb-Ramond gravity
Fernando M. Belchior, Faizuddin Ahmed, Edilberto O. Silva
We investigate a ModMax black hole surrounded by perfect-fluid dark matter within the framework of Lorentz-violating Kalb-Ramond gravity. The model combines three physically distin…
Are There Closed Timelike Curves in -Gravity?
Faizuddin Ahmed, A. F. Santos
A modified gravitational model whose action is given by an arbitrary function of the Ricci scalar, the matter Lagrangian density, a scalar field, and its kinetic term is investigat…
ModMax-black hole surrounded by cloud of strings in Bumblebee gravity
Fernando M. Belchior, Allan R. P. Moreira, Abdelmalek Bouzenada +1
In this article, we investigate the optical, thermodynamic, and scattering properties of a ModMax black hole surrounded by a cloud of strings within the framework of Einstein-bumbl…
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…
Perturbations and greybody bounds of Euler-Heisenberg black holes surrounded by perfect fluid dark matter
Fernando M. Belchior, Faizuddin Ahmed, Edilberto O. Silva
We investigate the propagation of massless fields with spins , , and in the spacetime of an Euler-Heisenberg (EH) black hole surrounded by perfect fluid dark matt…
Hawking Temperature, Sparsity and Energy Emission Rate of Regular Black Holes Supported by Primordial Dark Matter
Faizuddin Ahmed, Ahmad Al-Badawi, Edilberto O. Silva
In this paper, we investigate the thermodynamic and radiative properties of a regular black hole sourced by primordial dark matter (PDM), modeled effectively through a Dirac--Born-…
Thermodynamic and Radiative Properties of Euler-Heisenberg AdS Black Holes Surrounded by Quintessence and Dark Matter with a Cloud of Strings
Faizuddin Ahmed, Edilberto O. Silva
We investigate the thermodynamics, criticality, and selected radiative and optical properties of an Euler-Heisenberg AdS black hole surrounded by quintessence, perfect fluid dark m…
Strong-field signatures of a regular black hole in an Einasto dark matter halo
Mohsen Fathi, Faizuddin Ahmed
We investigate the strong-field phenomenology of a static and spherically symmetric regular black hole supported by an Einasto dark matter (DM) distribution. For the exponential Ei…
Hawking Temperature, Sparsity and Energy Emission Rate of Dark Matter Halo Regular Black Holes
Faizuddin Ahmed, Edilberto O. Silva
In this paper, we investigate the thermodynamic and radiative properties of a regular black hole sourced by a dark matter halo described by the Einasto density profile. The closed-…
Shadow, Quasinormal Modes, Sparsity, and Energy Emission Rate of Euler-Heisenberg Black Hole Surrounded by Perfect Fluid Dark Matter
Edilberto O. Silva, Faizuddin Ahmed
In this work, we investigate the optical, dynamical, and radiative properties of an Euler--Heisenberg black hole immersed in a perfect fluid dark matter (PFDM) background. We analy…
Black holes in general relativity coupled with NEDs surrounded by PFDM: thermodynamics, epicyclic oscillations, QPOs, and shadow
Faizuddin Ahmed, Sardor Murodov, Bekzod Rahmatov
In this work, we investigate the thermodynamics and motion of neutral test particles around a regular black hole immersed in a perfect fluid dark matter environment. We begin by ex…
Charged Black Holes in KR-gravity Surrounded by Perfect Fluid Dark Matter
Faizuddin Ahmed, Mohsen Fathi, Edilberto O. Silva
In this work, we systematically investigate the null geodesics of electrically charged black holes in a gravitational framework that incorporates Lorentz violation induced by a bac…
Thermodynamics and orbital structure of anti-de Sitter black holes in Palatini-inspired nonlinear electrodynamics
Edilberto O. Silva, João A. A. S. Reis, Faizuddin Ahmed
We construct a consistent anti-de Sitter completion of the static and spherically symmetric black-hole solution sourced by the Palatini-inspired nonlinear electrodynamics \(Y^n\) m…
Charged Black Holes in Bumblebee gravity with Global Monopole: Thermodynamics and Shadow
Faizuddin Ahmed, Shubham Kala, Edilberto O. Silva
In this paper, we perform a detailed study of the thermodynamic properties of a charged black hole in bumblebee gravity in the presence of a global monopole. We also analyze the op…
Thermodynamic Analysis of Charged AdS Black Holes with Cloud of Strings in Einstein-Bumblebee Gravity via Tsallis Entropy
Faizuddin Ahmed, Edilberto O. Silva
We investigate the thermodynamic properties of charged anti-de Sitter black holes surrounded by a cloud of strings in bumblebee gravity. In this framework, the cloud-of-strings par…
Screened Simpson-Visser Black Holes with Asymptotically de-Sitter Core
Faizuddin Ahmed, Ahmad Al-Badawi, Edilberto O. Silva
In this work, we introduce a screened Simpson-Visser regular solution and perform a comprehensive study of its physical and observational properties. We begin by analyzing the ther…
Dyonic ModMax Black Holes in Kalb-Ramond gravity with a Cloud of Strings as Source
Faizuddin Ahmed, Edilberto O. Silva
We investigate the geodesic structure, shadow, thermodynamics, and Hawking radiation from a dyonic ModMax black hole in Kalb-Ramond gravity with a cloud of strings. The combined pr…
Accelerating Bertotti-Robinson Black Holes in a Uniform Magnetic Field
Ahmad Al-Badawi, Faizuddin Ahmed, Edilberto O. Silva
We study the Hawking temperature, geodesic motion, and observable signatures of the accelerating Bertotti-Robinson (BR) spacetime, a vacuum black-hole solution deformed by a unifor…
Some phenomenological aspects of a quantum-corrected Reissner-Nordström black hole: quasi-periodic oscillations, scalar perturbations and thermal fluctuations
Faizuddin Ahmed, Ahmad Al-Badawi, Mohsen Fathi
In this work, we investigate several phenomenological aspects of a covariant quantum-corrected Reissner-Nordström black hole characterized by the mass , electric charge , and…
ModMax-AdS Black Hole with Global Monopole as Source in Kalb-Ramond Gravity
Faizuddin Ahmed, Ahmad Al-Badawi, Edilberto O. Silva
In this work, we investigate in detail the thermodynamic properties of a spherically symmetric ModMax-AdS black hole sourced by a global monopole within the Kalb-Ramond gravity. We…
Thermal Analysis, Joule-Thomson Expansion and Hawking Sparsity of Mod(A)Max-AdS Black Hole Immersed in a Cloud of Strings
Faizuddin Ahmed, Ahmad Al-Badawi, Edilberto O. Silva
We investigate the thermodynamic behavior of a spherically symmetric Anti-de Sitter black hole in Mod(A)Max electrodynamics surrounded by a cloud of strings. Within the extended ph…