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Existence and Energy Balance of the Solar Dynamo

Published online by Cambridge University Press:  19 July 2016

J.H.G.M. van Geffen
J.H.G.M. van Geffen*
Affiliation:
Laboratory for Space Research, Sorbonnelaan 2 3584 CA Utrecht, The Netherlands Astronomical Institute, P.O. Box 80000 3508 TA Utrecht, The Netherlands

Abstract

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The idea behind the use of ensemble averaging and the finite magnetic energy method of van Geffen and Hoyng (1992) is briefly discussed. Applying this method to the solar dynamo shows that the turbulence — an essential ingredient of traditional mean field dynamo theory — poses grave problems: the turbulence makes the magnetic field so unstable that it becomes impossible to recognize any period.

Type
1. The Solar Dynamo
Information
Symposium - International Astronomical Union , Volume 157: The Cosmic Dynamo , 1993 , pp. 19 - 23
Copyright
Copyright © Kluwer 1993 

References

Hoyng, P., “Turbulent transport of magnetic fields, II. The role of fluctuations in kinematic theory,” Astron. Astrophys. 171, 357 (1987).Google Scholar
Hoyng, P., “Turbulent transport of magnetic fields, III. Stochastic excitation of global magnetic modes,” Astrophys. J. 332, 857 (1988).CrossRefGoogle Scholar
Krause, F. and Rädler, K.-H., Mean-Field Magnetohydrodynamics and Dynamo Theory , Pergamon Press, Oxford (1980).Google Scholar
Parker, E.N., Cosmical Magnetic Fields: their origin and their activity , Clarendon Press, Oxford (1979).Google Scholar
van Geffen, J.H.G.M., “Distribution of magnetic energy in αΩ-dynamos, II: a solar convection zone dynamo,” Geophys. & Astrophys. Fluid Dynamics , in press (1992a) (‘Paper II).CrossRefGoogle Scholar
van Geffen, J.H.G.M., “Distribution of magnetic energy in αΩ-dynamos, III: a localized solar dvnamo,” Astron. Astrophys. , submitted (1992b) (‘Paper III).Google Scholar
van Geffen, J.H.G.M. and Hoyng, P., “Distribution of magnetic energy in αΩ-dynamos, I: the method,” Geophys. & Astrophys. Fluid Dynamics , in press (1992) (‘Paper I).Google Scholar