A flux-transport dynamo with a multi-cell meridional circulation

A flux-transport dynamo with a multi-cell meridional circulation

We discuss the effect of a non‐trivial meridional circulation pattern on a flux‐transport type of solar dynamo. The critical value of the turbulent helicity and the periods are calculated as a function of the meridional flow strength. We found that the dynamo mechanism is mainly determined by the gl...

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Veröffentlicht in:Astronomische Nachrichten 2005-04, Vol.326 (3-4), p.170-173
Hauptverfasser: Bonanno, A., Elstner, D., Belvedere, G., Rüdiger, G.
Format: Artikel
Sprache:eng
Schlagworte:
magnetohydrodynamics
Sun: interior
Sun: magnetic field
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Zusammenfassung:We discuss the effect of a non‐trivial meridional circulation pattern on a flux‐transport type of solar dynamo. The critical value of the turbulent helicity and the periods are calculated as a function of the meridional flow strength. We found that the dynamo mechanism is mainly determined by the global topology of the meridional flow. In particular the equatorwards migration in the butterfly diagram can be easily obtained by the combined action of two cells of meridional circulation. (© 2005 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
ISSN:0004-6337
1521-3994
DOI:10.1002/asna.200410372