On the persistence of the 22 Y solar cycle

Details On the persistence of the 22 Y solar cycle On the persistence of the 22 Y solar cycle

Feb 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990soph..125..389a&link_type=abstract

Solar Physics (ISSN 0038-0938), vol. 125, Feb. 1990, p. 389-398.

Physics

10

Solar Cycles, Solar Oscillations, Solar Terrestrial Interactions, Auroras, Magnetohydrodynamics, Oscillator Strengths, Radioactive Age Determination, Solar Activity Effects, Torsional Vibration

Scientific paper

The existence is discussed of precise periodicities of the Hale cycle (about 22 yr), the Gleissberg cycle (about 88 yr), and the approximately 132 yr cycle in various direct and indirect indicators of solar activity. The behavior of the 11 yr cycle and its first harmonic in modern sunspot series is also considered. It appears that the frequencies of approximately 1 c/88 yr and about 1 c/132 yr might be two subharmonics of the Hale cycle. The results support the hypothesis that the sun behaves as a nonlinear system forced by an oscillator having the Hale frequency. The forcing element inside the sun can be identified with a magnetofluid torsional oscillator.

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