3 papers
astro-ph.HE2026
Finite-Field QED Corrections to Vacuum Birefringence and Magnetar Polarization Transport
S. Abbassi, F. A. Chishtie, S. R. Valluri
We study low-energy photon propagation in a constant magnetic field within the finite-field one-loop Heisenberg--Euler framework and apply the resulting mode-dependent refractive i…
astro-ph.HE2025
Bondi-like Accretion Flow Dynamics: The Role of Gravitational Potential
Razieh Ranjbar, Héctor R. Olivares-Sánchez, Shahram Abbassi
The formation of massive black holes and their coevolution with host galaxies are pivotal areas of modern astrophysics. Spherical accretion onto a central point mass serves as a fo…
astro-ph.HE2025
Thermal instability of thin disk in the presence of wind and corona
Arezoo Tajmohamadi, Shahram Abbassi
This study investigates the thermal stability of thin accretion disks in high-energy astrophysical systems, incorporating the effects of magnetic fields, winds, and coronae. We ana…