Periodic behavior of solar flare index during solar cycles 20 and 21
作者： Atila �zg�� , Tamer Ata�
DOI: 10.1007/BF00149111
关键词:
摘要: Short-term periodicities of solar activity were studied with the flare index by using Discrete Fourier Transform for time interval 1966–1986. Two noticeable (18.5 and 5 months) have been found. The existence these comparing early findings is discussed.
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