How can  α  2‐dynamos generate axisymmetric magnetic fields? | Zendy

Elstner D. | Zendy; Rüdiger G. | Zendy

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How can α 2‐dynamos generate axisymmetric magnetic fields?

Author(s) -

Elstner D.,

Rüdiger G.

Publication year - 2007

Publication title -

astronomische nachrichten

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.394

H-Index - 63

eISSN - 1521-3994

pISSN - 0004-6337

DOI - 10.1002/asna.200710864

Subject(s) - dynamo , rotational symmetry , anisotropy , physics , thermal diffusivity , magnetic diffusivity , dynamo theory , magnetic field , convection , convective flow , field (mathematics) , mechanics , classical mechanics , astrophysics , optics , thermodynamics , mathematics , quantum mechanics , pure mathematics

Inspired by a recently observed axisymmetric field in a fully convective star we investigate the influence of an anisotropic diffusivity on the dynamo. We find that with reasonable assumptions for the anisotropy of the diffusivity and the α ‐effect the preference of axisymmetric modes is achieved. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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