The quiet sun brightness temperature at 127 MHz

Details The quiet sun brightness temperature at 127 MHz The quiet sun brightness temperature at 127 MHz

Dec 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982soph...81..207b&link_type=abstract

Solar Physics, vol. 81, Dec. 1982, p. 207-215.

Physics

3

Brightness Temperature, Coronal Holes, Decametric Waves, Solar Radio Emission, Coronal Loops, Radio Spectra, Solar Activity, Solar Flux Density

Scientific paper

New results for the meter and decameter wavelengths range spectrum of the quiet sun are reported for the long-lasting routine solar observations at 127 MHz carried out in Torun. It is determined that the flux densities fall well within the error limits of the spectra prepared by other authors. The respective peak brightness temperatures of the sun were inferred and found to be in accord with available results. A comparison with the Nancay measurements at 169 MHz is made, and it is calculated that the minimum quiet sun component of the flux at 127 MHz is 3.1 + or -0.4 sfu, which corresponds to the brightness temperature of 7.3 + or -1.4 x 10 to the 5th K. This parameter is attributed to the coronal hole. These derivations are extended to arrive at the brightness temperature of the solar quiet region of 8.9 x 10 to the 5th K.

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