Formation of accretion disks in close-binary systems with magnetic fields |
| |
Authors: | A G Zhilkin D V Bisikalo |
| |
Institution: | 1.Institute of Astronomy,Russian Academy of Sciences,Moscow,Russia;2.Chelyabinsk State University,Chelyabinsk,Russia |
| |
Abstract: | We have developed a three-dimensional numerical model and applied it to simulate plasma flows in semi-detached binary systems
whose accretor possesses a strong intrinsic magnetic field. The model is based on the assumption that the plasma dynamics
are determined by the slow mean flow, which forms a backdrop for the rapid propagation of MHD waves. The equations describing
the slow motion of matter were obtained by averaging over rapidly propagating pulsations. The numerical model includes the
diffusion of magnetic field by current dissipation in turbulent vortices, magnetic buoyancy, and wave MHD turbulence. A modified
three-dimensional, parallel, numerical code was used to simulate the flow structure in close binary systems with various accretor
magnetic fields, from 105 to 108 G. The conditions for the formation of the accretion disk and the criteria distinguishing the two types of flow corresponding
to intermediate polars and polars are discussed. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|