Spotless flare activity |
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Authors: | Levent Altaş |
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Institution: | 1. Kandilli Observatory, Bogaz?i University, Istanbul, Turkey
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Abstract: | The distribution of spotless flares (SFs) covering the time interval between 1947 and 1990 was investigated. The (11 – 20°)
latitude zone was found as the most prolific region for the occurrence of SFs. The longitudinal distribution of SFs occurred
most frequently at six or more places on the solar surface. In addition, the asymmetry of SF activity on the solar disk was
also studied in this paper. The variation of the asymmetry was compared with other solar activity manifestations. The existence
of secondary maxima of SFs appears to be an important result of our analysis. A one-year shift was found when the number of
events was plotted versus the year. |
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Keywords: | |
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