ENHANCED TEMPERATURE REGIONS IN THE POLAR ZONES OF THE SUN

Some aspects of regions with enhanced temperature in the polar zones o f the Sun are studied in this paper, using data from Metsahovi Radio R esearch station in Finland. In addition to low latitude sources, measu rements at 36.8 GHz have also revealed the existence of apparently sep arate class of sources with enhanced temperatures at latitudes above 4 0 degrees. The motions of these regions have been used to determine th e solar differential rotation rate at high latitudes. We also study bo th the spatial and the temporal distributions of the enhanced regions. The activity of the low latitude component follows the sunspot activi ty over a solar cycle. The high latitude component is of unknown origi n, but our data indicates a possible connection between these regions and polar faculae.