Sunspot motions and magnetic shears as precusors of flares |
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| Authors: | L Dezső G Csepura O Gerlei Á Kovács I Nagy |
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| Institution: | Heliophysical Observatory of the Hungarian Academy of Sciences, H-4010 Debrecen, Hungary |
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| Abstract: | Using full-disc white light photoheliograms, we have studied umbrae motion and variations in sunspot areas in a large activity complex over 4 solar rotations. On the basis of the observational data we illustrate with typical examples to what extent rapid spot motions are associated with flare occurrences. |
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