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Long-term evolution of radial surfaces of constant angular frequency

Published online by Cambridge University Press:  14 March 2005

Dirk K. Callebaut  and
Valentin I. Makarov
Dirk K. Callebaut
Affiliation:
Physics Department, CDE, University of Antwerp (UA), B-2610 Antwerp, Belgium, email: [email protected]
Valentin I. Makarov
Affiliation:
Main Astronomical Observatory, Pulkovo, St. Petersburg, 196140, Russia, email: [email protected]
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Abstract

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The radial surfaces of constant angular frequency may be connected with the upper rest latitude of the filament bands (or boundaries of large-scale unipolar magnetic regions) and with the separation of the sunspot region and the polar region (polar faculae, etc.). The equator-ward evolution of the rest latitudes observed since cycle 12 may be a forebode of a deep minimum.To search for other articles by the author(s) go to: http://adsabs.harvard.edu/abstract_service.html

Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 2004 , Issue IAUS223 , June 2004 , pp. 91 - 92
Copyright
© 2004 International Astronomical Union