A numerical model for accretion in intermediate polars with dipolar magnetic fields

作者：Isakova P B^*; Zhilkin A G; Bisikalo D V

来源：Astronomy Reports, 2015, 59(9): 843-850.

DOI：10.1134/S106377291509005X

A three-dimensional numerical model for accretion in the magnetosphere of a white dwarf in a magnetic cataclysmic variable is developed. Themodel assumes that the white dwarf has a dipolar magnetic field with its symmetry axis misaligned with the rotation axis. The model is based on the equations of modified MHD, which describe the mean flow parameters in wave MHD turbulence. Diffusion of the magnetic field and radiative heating and cooling are taken into account. The suitability of the model is confirmed by modeling the accretion in a typical intermediate polar. The computations show that a magnetosphere forms around the accretor, with the accretion occurring via columns. The accretion columns have a curtain-like shape, and arc-shaped zones of energy release form on the surface of the white dwarf as a result of the matter infall.

• 出版日期2015-9