9 papers
Epicyclic oscillations and accretion disk around a special Buchdahl-inspired spacetime
Mirzabek Alloqulov, Mubasher Jamil, Sanjar Shaymatov +2
In this paper, we consider the Buchdahl-inspired spacetime metric and investigate its aspects using the quasiperiodic oscillations and the accretion disk due to the accreting matte…
Two-sided NED black-hole, naked-singularity, and soliton solutions
Mustapha Azreg-Aïnou
We consider non-linear electrodynamics (NED) minimally coupled to general relativity. We derive novel electrically charged, spherically symmetric, black-hole solutions having, for…
Spin precession frequencies of a test gyroscope around a naked singularity and quasi-periodic oscillations
Tehreem Zahra, Mubasher Jamil, Mustapha Azreg-Aïnou
Various studies show that the gravitational collapse of inhomogeneous matter clouds leads to naked singularity formation. We investigate here the spin precession frequency of a tes…
Thermodynamic Topological Classes of Family of Black Holes with NUT-Charge
Mustapha Azreg-Aïnou, Muhammad Rizwan
{We introduce new analytical methods for treating black-hole thermodynamic topology, and thus depart from the usual treatment known in the literature. As application we investigate…
Gravitational Lensing by a Dark Compact Object in Modified Gravity and Observational Constraints from Einstein Rings
Nagina Rehman, Zoe C. S. Chan, Mubasher Jamil +1
In this manuscript, we provide a comprehensive study of gravitational lensing by dark compact objects predicted by a Modified Gravity (MOG) based on the Scalar-Vector-Tensor action…
Periodic orbits and their gravitational wave radiations around the Schwarzschild-MOG black hole
Oreeda Shabbir, Mubasher Jamil, Mustapha Azreg-Aïnou
This article explores the motion of massive particles in the gravitational field of a modified gravity (MOG) black hole (BH), characterized by the parameter . Using the Hamilto…