A model for quasi-spherical magnetized accretion flow

A quasi-spherical inner accretion flow in Seyfert galaxies ?

We study a phenomenological model for the continuum emission of Seyfert galaxies. In this quasi-spherical accretion scenario, the central X-ray source is constituted by a hot spherical plasma region surrounded by spherically distributed cold dense clouds. The cold material is radiatively coupled with the hot thermal plasma. Assuming energy balance, we compute the hard X-ray spectral slope Γ and...

Dynamics of magnetized spherical accretion flows

Transonic accretion flow with self-consistent treatment of the magnetic field is presented. My website http://www.cfa.harvard.edu/~rshcherb/.

Time-dependent quasi-spherical accretion

Differentially rotating, ‘advection-dominated’ accretion flows are considered in which the heat generated by viscous dissipation is retained in the fluid. The equations of time-dependent quasi-spherical accretion are solved in a simplified one-dimensional model that neglects the latitudinal dependence of the flow. A self-similar solution is presented that has finite size, mass, angular momentum...

The study of Hydrodynamical wind on the observational properties of magnetized accretion flow with thermal conduction

Gravitational Collapse of Magnetized Clouds I. Ideal Mhd Accretion Flow

We study the self-similar collapse of an isothermal magnetized rotating cloud in the ideal magnetohydrodynamic (MHD) regime. In the limit of small distance from the accreting protostar we find an analytic solution that corresponds to free-fall onto a central mass point. The density distribution is not spherically symmetric but depends on the mass loading of magnetic field lines, which can be ob...