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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 

References

Habbard, W.:1984, Planetary Interiors. Google Scholar
Krause, F., Rädler, K.-H.:1980, Mean-field electrodynamics and dynamo theory , Akademie-Verlag Berlin.Google Scholar
Maslov, V.P., Fedorjuk, M.V.:1981, Semi-classical approximation in quantum mechanics , D. Reidel, Dordrecht.Google Scholar
Ness, N.E., Acuna, M.H., Burlaga, L.F., Connerney, J.E.P., Lepping, P.P., Neubauer, F.M.:1986, Science 233, 85.Google Scholar
Ness, N.E., Acuna, M.H., Burlaga, L.F., Connerney, J.E.P., Lepping, P.P., Neubauer, F.M.:1989, Science 246, 1473.Google Scholar
Parker, E.N.:1979, Cosmical magnetic fields , Clarendon Press, Oxford.Google Scholar
Parker, E.N.:1988, Proc. Symp. Seismology of the Sun and Sun-like Stars , Dordrecht, D. Reidel.Google Scholar
Ruzmaikin, A.A., Starchenko, S.V.:1989, Kosmicheskie issledovaniya 27, 297.Google Scholar
Ruzmaikin, A.A., Starchenko, S.V.:1991, Icarus 93, 82.Google Scholar
Ruzmaikin, A.A., Shukurov, A.M., Sokoloff, D.D.:1988a, Magnetic fields of galaxies , Kluwer Acad. Publ., Dordrecht.CrossRefGoogle Scholar
Ruzmaikin, A.A., Sokoloff, D.D., Starchenko, S.V.: 1988b, Solar Physics 115, 5.Google Scholar
Starchenko, S.V., Shukurov, A.M.:1989, Astron. Astrophys. 214, 47.Google Scholar