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Non-Axisymmetric Magnetic Structure Generation in Planets Sun and Galaxies

Published online by Cambridge University Press:  19 July 2016

S.V. Starchenko
S.V. Starchenko*
Affiliation:
Geophysical observatory “Borok”, IFZ RAN, Yaroslavskaya obl. 152742, Russia

Abstract

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The problem of preferential excitation of non-axially symmetric magnetic fields in most of the observed spiral galaxies and in planets as Uranus and Neptune is studied. It is suggested that a dynamo acting in a thin conductive shell is possible in these objects.

It is shown that in this thin shell axisymmetric and non-axisymmetric magnetic field modes can be excited with equal efficiency. The preferential excitation of non-axially symmetric magnetic fields is possible, when the gradient of the angular velocity of rotation is comparatively small and has an essential component perpendicular to the shell.

Type
6. General Aspects of Dynamo Theory
Information
Symposium - International Astronomical Union , Volume 157: The Cosmic Dynamo , 1993 , pp. 263 - 267
Copyright
Copyright © Kluwer 1993 

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