Physics
Scientific paper
Jun 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980soph...66..333a&link_type=abstract
Solar Physics, vol. 66, June 1980, p. 333-346.
Physics
5
Decametric Waves, Radiation Spectra, Solar Storms, Spectroscopic Analysis, Type 3 Bursts, Drift Rate, Particle Beams, Plasma Frequencies, Plasma Oscillations, Radiometers, Solar Atmosphere, Solar Corona, Solar Wind, Spectrographs, Time Dependence
Scientific paper
An analysis has been made of type III bursts recorded during a decametric solar storm with a dynamic spectrograph and radiometers at 25.0, 20.0, 16.7 and 12.5 MHz. Sudden changes in drift rates and burst durations were found; increased values of type III burst durations at 25.0 MHz observed at the beginning and end of the storm coincided with the burst durations at 12.5 MHz measured at the time of the highest drift rates and least durations. It is concluded that during the middle stage of the storm the 25.0-12.5 MHz type III bursts were recorded at the fundamental plasma frequency, while at the initial and the final stages emission was received at the frequency of the second harmonic of plasma oscillations (12.5-6.25 MHz) excited in the higher layers of the corona.
Abranin Edward P.
Bazelian L. L.
Rapoport V. O.
Tsybko Ia. G.
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