1 citations · 1 across the 12 of their papers we have counts for
13 papers
Dark matter deformations of photon-ring echoes in horizon-scale interferometry
Mohsen Fathi
Strong lensing around a rotating black hole produces delayed and rotated higher-order images even in Kerr. We ask how a dark matter (DM) environment changes these photon-ring echoe…
A dark-matter-sensitive orientation clock near rotating black holes
Mohsen Fathi
A coherent triaxial structure has an intrinsic orientation clock because rotation about its intermediate principal axis is unstable. I ask how this clock changes when the structure…
Dark matter environments and safeguards for spacetime inference from horizon scale interferometry
Mohsen Fathi
Horizon scale interferometry can test a black hole spacetime only when the data, source model, and numerical response are reliable. We study this requirement with the public 2017 M…
Finite-source magnification residuals from a cNFW-inspired perturbation of an effective spinning black hole binary lens
Mohsen Fathi
We ask whether a cored-NFW-inspired radial perturbation leaves a finite-source magnification residual after refitting the best effective spinning vacuum binary. We compute the sour…
Adaptive ray tracing, image diagnostics, and photon ring signatures of rotating dark-matter-dressed black holes
Mohsen Fathi
We study the optical appearance of rotating black holes embedded in dark matter environments using a phenomenological ray tracing framework. Rather than focusing on a single geomet…
Strong-lensing degeneracies of black holes embedded in self-interacting scalar field dark matter halos
Mohsen Fathi, Gabriel Gómez
In this paper, we explore the strong gravitational lensing properties of black holes embedded in self-interacting scalar field dark matter halos, together with NFW-type configurati…
Maximal extension of Schwarzschild-like spacetimes in Lorentz gauge theory
Mohsen Fathi
We study the maximal analytic extension of the Schwarzschild-like black hole solution in Lorentz gauge theory. The lapse function is $f(r)=A_0^{-2}-2\m/r$, so the horizon is locate…
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…
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…
Black hole solutions surrounded by an anisotropic fluid in a Kalb--Ramond two--form background
Y. Sekhmani, A. Al-Badawi, Mohsen Fathi +2
We investigate static, spherically symmetric black hole spacetimes induced by the spontaneous Lorentz--symmetry breaking of a Kalb--Ramond (KR) two--form field, non--minimally coup…
Observational imprints and quasi-Periodic oscillations of magnetically charged anti-de Sitter black holes
Faizuddin Ahmed, Mohsen Fathi, Ahmad Al-Badawi
In this work, we investigate observable signatures of a magnetically charged Anti-de Sitter black hole in string-inspired Euler-Heisenberg theory. We analyze photon trajectories, t…
Quasinormal modes of a static black hole in nonlinear electrodynamics
Mohsen Fathi, Ariel Guzmán, J. R. Villanueva
We investigate the axial electromagnetic quasinormal modes of a static, asymptotically Anti--de Sitter (AdS) black hole sourced by a nonlinear electrodynamics model of Plebański ty…
Interacting Generalized Chaplygin-Jacobi gas: Thermodynamics approach
Gilberto Aguilar-Pérez, Miguel Cruz, Mohsen Fathi +1
This work investigates a cosmological model featuring an interaction between dark energy and dark matter, where the dark energy component is described by the Generalized Chaplygin-…