Elsevier

Physics Letters A

Volume 137, Issue 9, 5 June 1989, Pages 471-474
Physics Letters A

Fluctuating dynamo models

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Abstract

A modification of mean-field type models for dynamo action in helical turbulent fluids by the inclusion of local fluctuations of the growth rate of the unstable large scale magnetic field modes exhibits an intermittent temporal behaviour of the magnetic field. The fluctuating dynamo models offer a possible explanation of the various periods of minimal activity of the sun's magnetic field as a result of the very nature of its turbulent generation mechanism.

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Cited by (0)

1

I thank Professor H. Haken for critically reading the manuscript. I gratefully acknowledge helpful discussions with A. Wunderlin and wish to thank the Deutsche Forschungsgemeinschaft as well as the Volkswagenwerkfoundation (Hannover) for financial support.

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