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Oscillatory motions in the sun corresponding to the solar cycle
Author(s) -
Tuominen I.,
Virtanen H.
Publication year - 1984
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.2113050504
Subject(s) - dynamo , physics , sunspot , solar dynamo , dynamo theory , convection zone , oscillation (cell signaling) , solar cycle , convection , astrophysics , lorentz force , mechanics , classical mechanics , magnetic field , quantum mechanics , biology , solar wind , genetics
The mean velocities derived from the proper motions of sunspot groups show a similar behaviour as the torsional oscillation found by H OWARD and L ABONTE (1980), and the mean velocities have also a meridional component which changes according to the solar cycle. Calculation of the Lorentz force from a kinematical mean‐field dynamo shows that both of these components are a natural consequence of an α–ω dynamo acting in the solar convection zone.