Physics
Scientific paper
Sep 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992acasn..33..267l&link_type=abstract
Acta Astronomica Sinica (ISSN 0001-5245), vol. 33, no. 3, p. 267-279.
Physics
2
Solar Flares, Solar Magnetic Field, Solar Physics, Proton Flux Density, Solar Protons, Solar X-Rays
Scientific paper
A comprehensive energetic flare index which can be characteristic of the X-ray and proton radiation intensity of flares is proposed. The time and spatial distributions of the 'energetic flare indices', which have been observed since Cycle of 21, are analyzed and 13 'hot spots' of energetic flares during this period are given in this article. These active zones of the 'hot spots' appear repeatedly where erupted the energetic flares accounting for 58.1 percent of the total indices. The characteristics of the hot spots of energetic flares and the relationship between the hot spots and the evolution of the large scale magnetic fields are also discussed. It is shown that the evolution of the hot spots of flares has close relation to the evolution of the large scale magnetic fields, with the former being modulated by the latter. The duration of the 13 hot spots given here is not beyond the limit of the time interval of their existence derived in this paper. On the whole and generally, the hot spots can last for two or three years or slightly longer.
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