118 citations · 636 across the 63 of their papers we have counts for
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Self-gravitational collapse of polytropic mass-losing gaseous discs: effects of outer boundary condition dictated by parent cloud
Erfan Nourbakhsh, Mohsen Shadmehri, Shahram Abbassi
Given the fact that accretion discs are associated with their parent molecular cloud, we studied its effects as a constraint on the outer boundary of the viscous-resistive polytrop…
Viscous accretion of a polytropic self-gravitating disk in the presence of wind
Shahram Abbassi, Erfan Nourbakhsh, Mohsen Shadmehri
Self-similar and semi-analytical solutions are found for the height-averaged equations govern the dynamical behavior of a polytropic, self-gravitating disk under the effects of win…
The role of Hall diffusion in the magnetically threaded thin accretion discs
Mohsen Shadmehri
We study role of the Hall diffusion in the magnetic star-disc interaction. In a simplified steady state configuration, the total torque is calculated in terms of the fastness param…
Thermal instability in ionized plasma
Mohsen Shadmehri, Mohsen Nejad-Asghar, Alireza Khesali
We study magnetothermal instability in the ionized plasmas including the effects of Ohmic, ambipolar and Hall diffusion. Magnetic field in the single fluid approximation does not a…
Thermal instability with the effect of cosmic-ray diffusion
Mohsen Shadmehri
We study dynamical effects of cosmics rays (CRs) on the thermal instability in the linear regime. CRs and the thermal plasma are treated as two different interacting fluids, in whi…