Enhanced temperature regions in the polar zones of the Sun

Details Enhanced temperature regions in the polar zones of the Sun Enhanced temperature regions in the polar zones of the Sun

May 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998a%26a...333..741r&link_type=abstract

Astronomy and Astrophysics, v.333, p.741-745 (1998)

Astronomy and Astrophysics

Astrophysics

16

Sun: Radio Radiation, Rotation

Scientific paper

Some aspects of regions with enhanced temperature in the polar zones of the Sun are studied in this paper, using data from Metsähovi Radio Research station in Finland. In addition to low latitude sources, measurements at 36.8GHz have also revealed the existence of apparently separate class of sources with enhanced temperatures at latitudes above 40 degrees. The motions of these regions have been used to determine the solar differential rotation rate at high latitudes. We also study both the spatial and the temporal distributions of the enhanced regions. The activity of the low latitude component follows the sunspot activity over a solar cycle. The high latitude component is of unknown origin, but our data indicates a possible connection between these regions and polar faculae.

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