Long-term evolution of radial surfaces of constant angular frequency
Abstract
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.
- Publication:
-
Multi-Wavelength Investigations of Solar Activity
- Pub Date:
- 2004
- DOI:
- 10.1017/S1743921304005198
- Bibcode:
- 2004IAUS..223...91C