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The ratio of the radio and optical diameters of the sun at centimeter wavelenghts
T K DAS, H SARKAR, A K SEN
Published in Springer Netherlands
2000
Volume: 194
   
Issue: 1
Pages: 155 - 163
Abstract
The ratios of radio to optical diameter of the solar disc at 10.7 and 3 cm wavelengths are examined. The radio observations are daily east-west scans of the solar disc, made over the period 1975-1992, which includes almost two complete solar cycles. We find that the apparent disc diameter is slightly greater at solar minimum than it is at solar maximum, suggesting that the radio diameter varies over the cycle. Moreover, the ratio is smaller at 3 cm wavelength than it is at 10.7 cm, at both solar maximum and minimum.
About the journal
JournalData powered by TypesetSolar Physics
PublisherData powered by TypesetSpringer Netherlands
ISSN0038-0938