Authors: Axel Brandenburg
Publish Date: 2009/02/21
Volume: 144, Issue: 1-4, Pages: 87-104
Abstract
Recent analytical and computational advances in the theory of largescale dynamos are reviewed The importance of the magnetic helicity constraint is apparent even without invoking meanfield theory The tau approximation yields expressions that show how the magnetic helicity gets incorporated into meanfield theory The testfield method allows an accurate numerical determination of turbulent transport coefficients in linear and nonlinear regimes Finally some critical views on the solar dynamo are being offered and targets for future research are highlighted
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