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arXiv · 2309.00666

Rieger, Schwabe, Suess-de Vries: The Sunny Beats of Resonance

F. Stefani·G. M. Horstmann·M. Klevs·G. Mamatsashvili·T. Weier
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Abstract

We propose a self-consistent explanation of Rieger-type periodicities, the Schwabe cycle, and the Suess-de Vries cycle of the solar dynamo in terms of resonances of various wave phenomena with gravitational forces exerted by the orbiting planets. Starting on the high-frequency side, we show that the two-planet spring tides of Venus, Earth and Jupiter are able to excite magneto-Rossby waves which can be linked with typical Rieger-type periods. We argue then that the 11.07-year beat period of those magneto-Rossby waves synchronizes an underlying conventional $\alpha-\Omega$-dynamo, by periodically changing either the field storage capacity in the tachocline or some portion of the $\alpha$-effect therein. We also strengthen the argument that the Suess-de Vries cycle appears as an 193-year beat period between the 22.14-year Hale cycle and a spin-orbit coupling effect related with the 19.86-year rosette-like motion of the Sun around the barycenter.

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F. Stefani, G. M. Horstmann, M. Klevs, G. Mamatsashvili, T. Weier. 2023-09-01. Rieger, Schwabe, Suess-de Vries: The Sunny Beats of Resonance. https://arxiv.org/abs/2309.00666

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