Abstract
We present the results of 3D magnetohydrodynamical simulations of the flow structure in a close binary system whose parameters correspond to those of the asynchronous polar BY Cam. The calculations’ results are given for 10 phases of the beat cycle between the white dwarf spin and the orbital frequencies. Our model takes account of the white dwarf’s magnetic field that is a combination of dipole and quadrupole components with non-coaxial axes, inclined with respect to the spin rotation axis of the accretor. We have found that this model allows us to easily choose the mutual orientation of the dipole and quadrupole components’ axes to produce not only two but three and even four accretion spots. We also discuss the main properties of the obtained numerical solution and its possible observational manifestations.
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