5 papers
Poloidal Field Amplification through Compression-Shear Dynamics in Schwarzschild Accretion: Pathways to MAD States
Malihe Mousapour Gharghabi, Jamshid Ghanbari, Mahboobe Moeen Moghaddas
The amplification of magnetic fields in black hole accretion flows governs key high-energy phenomena such as magnetically arrested disks and relativistic jets. We develop a semi-an…
A Study of thin relativistic magnetic accretion disk around a distorted black hole
Seyyed Masoud Hoseyni, Jamshid Ghanbari, Mahboobe Moeen Moghaddas
Accretion disks, swirling structures of matter spiraling into black holes, play a pivotal role in our understanding of binary star systems and their intricate evolutionary processe…
A Study of thin relativistic viscose accretion disk around a distorted kerr black hole (DKB)
Olya Layeghi, Jamshid Ghanbari, Mahboobe Moeen Moghaddas
In this paper, we analyze a thin disk around the distorted Kerr black hole (DKB) within the framework of general relativity using an axisymmetric solution of the Einstein equations…
Magnetic Field Evolution for Keplerian and Sub-Keplerian Flows around Non Rotating Black Hole
Malihe Mousapour Gharghabi, Jamshid Ghanbari, Mahboobe Moeen Moghaddas
The exact two-dimensional non-stationary solution for the evolution of the magnetic field during accretion with nearly spherical symmetry, using Newton's solution and considering b…
The non-linear theory of a warped accretion disc with the beta-viscosity prescription
J. Ghanbari, M. Shadmehri, F. Salehi
We study the nonlinear dynamics of a warped or twisted accretion disc, in which the viscosity coefficients are assumed to be locally proportional to the rotational velocity (beta-…