Computer Science
Scientific paper
Oct 1977
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977ge%26ae..17..332g&link_type=abstract
(Geomagnetizm i Aeronomiia, vol. 17, Mar.-Apr. 1977, p. 332, 333.) Geomagnetism and Aeronomy, vol. 17, Oct. 1977, p. 221, 222. T
Computer Science
Satellite Observation, Solar Corona, Solar Radio Emission, Centimeter Waves, Electron Flux Density, Low Frequencies, Periodic Variations, Proton Flux Density, Radiant Flux Density, Solar Flares
Scientific paper
Quasi-periodic fluctuations of radio emission with periods ranging from 6 sec to 2 hours in the solar corona have been observed. These fluctuations were observed in more than 60% of the data collected by Prognoz 1 on solar radio emission in the period April to September 1972; the amplitude of the fluctuations exceeded the mean level of radio emission by 10-15 dB; computer analysis revealed the following periods of fluctuations: 29 plus or minus 2, 57.5 plus or minus 5 and 118 plus or minus 20 min. Results are presented of fast Fourier analysis of radio emission observations for July 5, 1972. The coefficient of oscillations (defined by the relation K = (Pmax - Pmin)/Pav, where Pmax, Pmin and Pav, respectively, are the maximum, minimum and average levels of the received signal over one hour) is used as a quantitative criterion to determine the level of fluctuations.
Grigor'eva V. P.
Pugacheva Galina I.
Shestopalov I. P.
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