Mathematics – Logic
Scientific paper
Jun 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991baicz..42..144v&link_type=abstract
Astronomical Institutes of Czechoslovakia, Bulletin (ISSN 0004-6248), vol. 42, no. 3, June 1991, p. 144-157.
Mathematics
Logic
4
H Alpha Line, Solar Cycles, Solar Flares, Annual Variations, Solar Corona, Sunspots
Scientific paper
The temporal behavior of H-alpha grouped flares and LDE-type flares is examined to determine whether the LDE-types are more prevalent in certain phases of the solar cycle. A chronological account of solar activity is presented, and observational data are listed for flare characteristics. Mathematical analyses of annual and monthly flares are presented with attention given to the north-south asymmetry and significant short-term pulses of the LDE flares. The LDE (M-X) flare occurrence conforms to a parabola as does the 10.8-cm radio flux. Correlation of these parameters with the coronal density is considered, and it is noted that the higher number of LDE flares in the Northern Hemisphere is compensated by increased Southern Hemisphere activity in the decline phase.
Antalová Anna
Viktorinova B.
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