Physics
Scientific paper
Feb 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998ijrsp..27...30m&link_type=abstract
Indian J. Radio Space Phys., Vol. 27, No. 1, p. 30 - 34
Physics
Solar Radio Radiation: Solar Activity Cycles, Solar Radio Radiation: Variability, Solar Radio Radiation: Quiet Sun
Scientific paper
The variability of the total solar radio flux at five wavelengths, namely, 3 cm, 8 cm, 10.7 cm, 15 cm and 30 cm have been studied over 21st and 22nd solar cycles (1975 - 1991). The background component at these wavelengths has been estimated by eliminating the contribution of active regions on the measured total radio flux. This radiation is generally caused by thermal emission of the solar atmosphere and originates mostly from the chromosphere. The study of quiet Sun radiation is of considerable importance since it helps to obtain the information on the electron density and temperature for different layers of the solar atmosphere. The present results indicate that at centimetric wavelengths the 'quiet' solar flux density and temperatures at the maximum activity are higher than the corresponding values at the minimum activity.
Lokanadham B.
Muneer S.
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