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Solar and stellar dynamos -- latest developments

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arxiv astro-ph/0207393 v1 pith:FWNELBC6 submitted 2002-07-18 astro-ph

classification astro-ph
keywords theorysolarstellarbehaviordescribedevelopmentsdynamosmagnetic
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Recent progress in the theory of solar and stellar dynamos is reviewed. Particular emphasis is placed on the mean-field theory which tries to describe the collective behavior of the magnetic field. In order to understand solar and stellar activity, a quantitatively reliable theory is necessary. Much of the new developments center around magnetic helicity conservation which is seen to be important in numerical simulations. Only a dynamical, explicitly time dependent theory of alpha-quenching is able to describe this behavior correctly.

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  1. Connecting mean-field theory with dynamo simulations

    astro-ph.SR 2025-07 unverdicted novelty 1.0 of 10

    Mean-field dynamo models reproduce the large-scale magnetic modes of 3D simulations at least qualitatively, but quantitative closure remains incomplete because transport coefficients are hard to measure and non-locali...

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