Other
Scientific paper
Feb 1975
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975apl....16...71c&link_type=abstract
Astrophysical Letters, vol. 16, no. 2, 1975, p. 71-74.
Other
Lunar Luminescence, Solar Flux Density, Solar Radio Bursts, Brightness Temperature, Calibrating, Electron Energy, Energy Distribution, Microwave Frequencies, Spectrum Analysis
Scientific paper
The absolute flux of the sun at 15.4 GHz has been determined as 511 times 10 to the minus 22 sfu for a period of six days, using an optimum gain horn with hot-cold calibration loads. The maximum uncertainty of this measurement, considering all possible observational and system errors was calculated to be about 4%. The normal patrol measurements use the moon as a calibration source and for the corresponding period provided a flux of 518 sfu. The two sets of measurements show a consistency of 1.4%, well within the absolute accuracy calculated for the horn-derived values. Critical comments on this and other experiments are reviewed.
Castelli John P.
Guidice Donald A.
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