Frequency distributions and correlations of solar X-ray flare parameters

Details Frequency distributions and correlations of solar X-ray flare parameters Frequency distributions and correlations of solar X-ray flare parameters

Feb 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993soph..143..275c&link_type=abstract

Solar Physics (ISSN 0038-0938), vol. 143, no. 2, p. 275-299.

Physics

241

Frequency Distribution, Solar Flares, Solar X-Rays, Correlation, Solar Electrons, Solar Physics

Scientific paper

Frequency distributions of flare parameters are determined from over 12,000 solar flares. The flare duration, the peak counting rate, the peak hard X-ray flux, the total energy in electrons, and the peak energy flux in electrons are among the parameters studied. Linear regression fits, as well as the slopes of the frequency distributions, are used to determine the correlations between these parameters. The relationship between the variations of the frequency distributions and the solar activity cycle is also investigated. Theoretical models for the frequency distribution of flare parameters are dependent on the probability of flaring and the temporal evolution of the flare energy build-up. The results of this study are consistent with stochastic flaring and exponential energy build-up. The average build-up time constant is found to be 0.5 times the mean time between flares.

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