Large Scale B-Field in Stationary Accretion Disks

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Bisnovatyi-Kogan, G. S.
Lovelace, R. V. E.
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Abstract
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We reconsider the problem of the formation of a large-scale magnetic field in the accretion disks around black holes. In contrast with previous work we take into account the nonuniform vertical structure of the disk. The high electrical conductivity of the outer layers of the disk prevents the outward diffusion of the magnetic field. This implies a stationary state with a strong magnetic field in the inner parts of the accretion disk close to the black hole.
Comment: 5 pages, 2 figures
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Astrophysics
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