From the 1 of 8 linked papers with an AI index.
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Thermal Stability of Radiation-Pressure-Dominated Accretion Disks Threaded by Net Vertical Magnetic Flux
Shahram Abbassi, Armin Memarian, Samik Mitra
The classical radiation-pressure instability predicts strong thermal variability in luminous black-hole accretion disks, whereas most disk-dominated X-ray binary soft states remain…
Braking indices as probes of r-mode spin-down in young pulsars
Shahram Abbassi, Armin Memarian, Evelyn Sophia Guest +1
The paper develops a timing-based framework using a four‑torque spin‑down model to interpret braking‑index measurements of young pulsars and to constrain possible r‑mode (current‑q…
The Role of r-Modes in Pulsar Spin-down, Pulsar Timing, and Gravitational Waves
Xiyuan Li, Shahram Abbassi, Varenya Upadhyaya +2
We investigate the role of r-mode oscillations in pulsar spin-down and their implications for gravitational wave emission and pulsar timing analysis. Using a non-linear differentia…