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Accretion Disc Viscosity

Published online by Cambridge University Press:  12 April 2016

Christopher A. Tout
Christopher A. Tout*
Affiliation:
Institute of Astronomy, The Observatories, Madingley Road, Cambridge CB3 0HA, UK

Abstract

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We review the various physical processes that could lead to viscosity in accretion discs. A local magnetic dynamo offers the most plausible mechanism and we discuss a simple model in some detail. The dynamo operates even in partially and very weakly ionized discs without much modification.

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