15 citations · 63 across the 13 of their papers we have counts for
16 papers
Thermal and optical signatures of a magnetic AdS black hole in dark matter and quintessence
Mohsen Fathi, Marco Olivares, Carlos E. Romero-Figueroa +1
We study a static magnetic anti-de Sitter black hole surrounded by perfect-fluid dark matter and quintessence. We follow the geometry from the horizon to the observer. We first exa…
Inverse Reconstruction of Causal Nonlinear Electrodynamics: Functional Families, Spectral Constraints, and Single-Horizon Black Holes
Ariel Guzmán, Mohsen Fathi, J. R. Villanueva
Nonlinear electrodynamics (NLED) admits many causal theories, so causality alone does not provide a unique selection principle. We formulate an inverse construction in which consti…
A causal magnetic black hole with finite self-energy
Mohsen Fathi, Ariel Guzmán, J. R. Villanueva
We construct a nonlinear electrodynamics (NLED) model for a static magnetic black hole. Rather than imposing a regular center, we require a Maxwell weak-field limit, finite magneti…
Constitutive birefringence and critical curves in the rotating García--Díaz black hole
Ariel Guzmán, Mohsen Fathi, J. R. Villanueva
We study high-frequency electromagnetic propagation in the rotating García--Díaz solution of Einstein gravity coupled to NLED. In this system, light is not governed only by the nul…
Shadow of a nonlinear electromagnetic generalized Kerr-Newman-AdS black hole
Mohsen Fathi
In this work, we investigate the shadow properties of the Kerr-Newman-Anti-de Sitter black hole coupled to a nonlinear electrodynamics. We construct the shadow by employing the cel…
Cosmological evolution driven by polytropic fluids in an inhomogeneous spacetime
Gilberto Aguilar-Pérez, Miguel Cruz, Mohsen Fathi +2
Addressing the late-time accelerated expansion of the universe, known as the "dark energy problem", remains a central challenge in cosmology. While the cosmological constant is the…
Shadows aspect of rotating black holes in the Einstein-AdS SU(N)-nonlinear sigma model
Mohsen Fathi, Yassine Sekhmani
Recent observations of the supermassive black holes M87* and Sgr A* by the Event Horizon Telescope (EHT) have opened new avenues for testing gravity theories through black hole sha…
Shedding Light on Gravity: Black Hole Shadows and Lensing Signatures in Lorentz Gauge Theory
Ali Övgün, Mohsen Fathi
Recent advances, including gravitational wave detections and imaging of black hole shadows, have strongly validated general relativity. Nevertheless, ongoing cosmological observati…
Effect of primary scalar hair on black hole's strong lensing in Beyond Horndeski Gravity
Mohsen Fathi
We study the gravitational lensing effects of a static, asymptotically flat black hole with primary scalar hair in Beyond Horndeski gravity, focusing on the strong lensing regime.…
Black hole with global monopole charge in self-interacting Kalb-Ramond field
Mohsen Fathi, Ali Övgün
In this study, we explore a static, spherically symmetric black hole solution in the context of a self-interacting Kalb-Ramond field coupled with a global monopole. By incorporatin…
Shadow analysis of an approximate rotating black hole solution with weakly coupled global monopole charge
Mohsen Fathi
We investigate the shadow properties of a rotating black hole with a weakly coupled global monopole charge, using a modified Newman-Janis algorithm. This study explores how this ch…
Null geodesics around a black hole with weakly coupled global monopole charge
Mohsen Fathi, J. R. Villanueva, Thiago R. P. Caramês +1
In this paper, we study an asymptotically flat black hole spacetime with weakly nonminimally coupled monopole charge. We analytically and numerically investigate light ray propagat…
Thermodynamic and observational constraints on black holes with primary hair in Beyond Horndeski Gravity: Stability and shadows
Cristian Erices, Mohsen Fathi
In this paper, we find that unlike in General Relativity, the shift-symmetric subclass of Beyond Horndeski theories permits black holes with primary hair that are thermodynamically…
Black hole in a generalized Chaplygin-Jacobi dark fluid: shadow and light deflection angle
Mohsen Fathi, J. R. Villanueva, Gilberto Aguilar-Pérez +1
We investigate a generalized Chaplygin-like gas with an anisotropic equation of state, characterizing a dark fluid within which a static spherically symmetric black hole is assumed…
Orbits of particles with magnetic dipole moment around magnetized Schwarzschild black holes: Applications to S2 star orbit
Uktamjon Uktamov, Mohsen Fathi, Javlon Rayimbaev +1
This study provides a comprehensive analytical investigation of the bound and unbound motion of magnetized particles orbiting a Schwarzschild black hole immersed in an external asy…
Light propagation around a Kerr-like black hole immersed in an inhomogeneous anisotropic plasma in Rastall gravity: Analytical solutions to the equations of motion
Mohsen Fathi, Marco Olivares, José R. Villanueva +1
In this paper, we explore the behavior of light ray trajectories in the exterior geometry of a rotating black hole within the Rastall theory of gravity, which is surrounded by an i…