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Alpha-Quenched Alpha-Lambda Dynamos and the Excitation of Nonaxisymmetric Magnetic Fields

Published online by Cambridge University Press:  19 July 2016

Dale M. Barker  and
David Moss
Dale M. Barker
Affiliation:
Department of Mathematics, University of Manchester, Manchester M13 9PL, UK
David Moss
Affiliation:
Department of Mathematics, University of Manchester, Manchester M13 9PL, UK

Abstract

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We present calculations showing how stable nonaxisymmetric magnetic fields may be excited in an alpha-quenched mean field dynamo in a deep spherical shell. The large scale velocity fields (differential rotation, meridional circulation) are determined by solving the axisymmetric Navier-Stokes equation, neglecting the Lorentz force but including a term parameterizing the turbulent Reynolds stresses.

Keywords

Lambda EffectNonlinear DynamosNonaxisymmetric FieldsActive Giants
Type
4. Late-Type and Other Stars
Information
Symposium - International Astronomical Union , Volume 157: The Cosmic Dynamo , 1993 , pp. 147 - 151
Copyright
Copyright © Kluwer 1993 

References

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