Astronomy and Astrophysics – Astronomy
Scientific paper
Feb 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990azh....67..141a&link_type=abstract
Astronomicheskii Zhurnal (ISSN 0004-6299), vol. 67, Jan.-Feb. 1990, p. 141-150. In Russian.
Astronomy and Astrophysics
Astronomy
6
Drift Rate, Solar Activity, Solar Cycles, Type 3 Bursts, Electron Density (Concentration), Radio Frequencies, Radio Telescopes, Solar Corona
Scientific paper
Results are presented from measurements of the frequency drift rates for the maximum of the solar type III and IIIb-III bursts in the 25-12.5 MHz range during the period from 1973 to 1984. In the decameter wavelength range, the frequency drift rate is proportional to the value of observational frequency and has a weak dependence on the type of phase within the 11-yr solar cycle. The results are compared with results for the hectometer range, showing that the hectometer type II burst generation process generally occurs at the first harmonic. Data on the frequency dependence of the drift rates at hectometer and decameter wavelengths are consistent with the generation of type II bursts in the streamer at a burst source speed of about 0.3 s.
Abranin Edward P.
Bazelyan L. L.
Tsybko Ya. G.
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