Physics
Scientific paper
Oct 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991a%26as...90...83v&link_type=abstract
Astronomy and Astrophysics Supplement Series (ISSN 0365-0138), vol. 90, no. 1, Oct. 1991, p. 83-87.
Physics
8
Periodic Variations, Power Spectra, Solar Flares, Solar Radio Bursts, Spectrum Analysis, Radio Spectra, Solar Physics
Scientific paper
A power spectrum analysis of the daily number of solar flares producing type I, II, III, IV, and V radio bursts has been carried out for the period 1980-1984. The analysis shows that type II and IV radio bursts confirm the existence of a 152-158 days periodicity in the rate of occurrence, while type I, III and V radio bursts do not show this 152-158 days periodicity. It is concluded that only type II and IV radio bursts should be used as a parameter which indicates the solar activity.
Joshi Girish C.
Paliwal D. C.
Uddin Wahab
Verma V. K.
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