Flow structure in magnetic close binary stars

A.G. Zhilkin^a, b, D.V. Bisikalo^a, A.A. Boyarchuk^a
^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.

PACS: 52.30.−q, 97.10.Gz, 97.80.−d (all)
DOI: 10.3367/UFNe.0182.201202a.0121
URL: https://ufn.ru/en/articles/2012/2/a/
Web of Science

000304186400001
Scopus

2-s2.0-84862104834
ADS NASA

2012PhyU...55..115Z
Citation: Zhilkin A G, Bisikalo D V, Boyarchuk A A "Flow structure in magnetic close binary stars" Phys. Usp. 55 115–136 (2012)

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Received: 17th, May 2011, revised: 14th, July 2011, accepted: 15th, July 2011

Оригинал: Жилкин А Г, Бисикало Д В, Боярчук А А «Структура течения в тесных двойных звёздах с учётом магнитного поля» УФН 182 121–145 (2012); DOI: 10.3367/UFNr.0182.201202a.0121

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