A.A. Boyarchuka aInstitute of Astronomy, Russian Academy of Sciences, ul. Pyatnitskaya 48, Moscow, 119017, Russian Federation bChelyabinsk State University, ul. Bratev Kashirinykh 129, Chelyabinsk, 454021, Russian Federation
The current understanding of mass exchange processes between close binary system (CBS) components is reviewed, with particular attention on the mass flow structure and accretion disk physics. Using 3D MHD calculation results, the variation of key accretion disk characteristics with the accretor magnetic field is studied and the magnetic field generation process is analyzed. In particular, it is shown that the quasi-periodic process of toroidal magnetic field generation in disks results in alternating accretion and decretion regimes in the inner regions of the disk. By treating MHD flows in CBSs self-consistently, disk formation conditions are established and a separation criterion between intermediate-polar and polar flows is found. The possibility of using MHD simulation results for explaining observations is discussed.
PT Journal Article
TI Flow structure in magnetic close binary stars
AU Zhilkin A G
FAU Zhilkin AG
AU Bisikalo D V
FAU Bisikalo DV
AU Boyarchuk A A
FAU Boyarchuk AA
DP 10 Feb, 2012
TA Phys. Usp.
SO Phys. Usp. 2012 Feb 10;55(2):115-136
Received: 17th, May 2011, revised: 14th, July 2011, accepted: 15th, July 2011