A synchronized two-dimensional α–Ω model of the solar dynamo
A synchronized two-dimensional α–Ω model of the solar dynamo
Klevs, M.; Stefani, F.; Jouve, L.
We consider a conventional α–Ω-dynamo model with meridional circulation that exhibits typical features of the solar dynamo, including a Hale-cycle period of around 20 years and a reasonable shape of the butterfly diagram. With regard to recent ideas of a tidal synchronization of the solar cycle, we complement this model by an additional time-periodic α-term that is localized in the tachocline region. It is shown that amplitudes of some decimeters per second are sufficient for this α-term to become capable of entraining the underlying dynamo. We argue that such amplitudes of α may indeed be realistic, since velocities in the range of m/s are reachable, e.g. for tidally excited magneto–Rossby waves.
Involved research facilities
- DRESDYN
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Solar Physics 298(2023), 90
DOI: 10.1007/s11207-023-02173-y
Cited 3 times in Scopus
Permalink: https://www.hzdr.de/publications/Publ-37112