We present the results of an analysis of the east-west asymmetry in the solar flare distribution, observed during the years from 1976 to 1985. We conclude that flare events, all type of He flares, are not uniformly spread in heliolongitude over the solar disc when considering events with heliolongit
The distribution of solar flares for the time period 1967–1985
✍ Scribed by Basil Petropoulos; C. Poulakos
- Publisher
- Springer Netherlands
- Year
- 1989
- Tongue
- English
- Weight
- 748 KB
- Volume
- 46
- Category
- Article
- ISSN
- 1573-0794
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✦ Synopsis
The distribution of monthly counts of grouped solar flares Nr has been studied for the time period 1967-1985 and they have been compared to other solar activity index R,, FzgoO, and F3,50 i.e. intensities of solar radio flux at 2800 MH, and 3750 MH,. Seasonal variations have been found in the monthly distribution of solar flares.
We have also studied the variation of the correlation coefficient for every year between NF and R, for the time period 1967-1985. The distribution of monthly counts of grouped solar flares N, has also been compared to the number at high velocity solar-wind streamers for the same period.
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We have compared the monthly distribution of the total number of flares to the monthly mortality from cardiovascular and myocardial infarctions for the time period 1974-1983, and computed correlation coefficients. Periodicities of 3 and 5 months (150 days) have been found in both distributions.
Scanning spectrometer measurements in the range 1310-270/~, observed from the satellite OSO 3, are reported for the solar flare of 2114 UT March 27, 1967. This flare was a long lasting sequence of bursts with EUV spectra consisting of enhanced lines and recombination continua normally emitted from t