Solar-planetary cycles in Jupiter's great red spot darkness |
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| Authors: | I. Liritzis B. Petropoulos C. Banos E. Sarris |
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| Affiliation: | (1) Research Center for Astronomy and Applied Mathematics, Academy of Athens, 14 Anagnostopoulou str., 106 73 Athens, Greece;(2) National Observatory of Athens, Astronomical Institute, Athens, Thission |
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| Abstract: | The change in the darkness of the Great Red Spot (GRS) of Jupiter (1894–1974) has been analysed with Fourier (FFT), Maximum Entropy and Power spectrum (Blackman-Tukey window) (PSA) methods of spectrum analysis. Significance, non-randomness and stationarity tests assigned high variance to periodicities of 33 ± 4, 13–15, about 11, 9 and 3 yrs. The highest correlation between solar activity and GRS darkness was found for the 14th and 16th solar cycle. The periodicities obtained are interpreted as the combined eftects of solar activity, planetary resonances and internal jovian mechanisms. |
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