Does a spin-orbit coupling between the Sun and the Jovian planets govern the solar cycle?
Article
Article Title | Does a spin-orbit coupling between the Sun and the Jovian planets govern the solar cycle? |
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ERA Journal ID | 40237 |
Article Category | Article |
Authors | Wilson, I. R. G. (Author), Carter, B. D. (Author) and Waite, I. A. (Author) |
Journal Title | Publications of the Astronomical Society of Australia |
Journal Citation | 25 (2), pp. 85-93 |
Number of Pages | 9 |
Year | 2008 |
Publisher | Cambridge University Press |
Place of Publication | Melbourne, Australia |
ISSN | 1323-3580 |
1448-6083 | |
Digital Object Identifier (DOI) | https://doi.org/10.1071/AS06018 |
Web Address (URL) | http://www.publish.csiro.au/?act=view_file&file_id=AS06018.pdf |
Abstract | We present evidence to showthat changes in the Sun’s equatorial rotation rate are synchronized with changes in its orbital motion about the barycentre of the Solar System. We propose that this synchronization is indicative of a spin–orbit coupling mechanism operating between the Jovian planets and the Sun. However, we are unable to suggest a plausible underlying physical cause for the coupling. Some researchers have proposed that it is the period of the meridional flow in the convective zone of the Sun that controls both the duration and strength of the Solar cycle. We postulate that the overall period of the meridional flow is set by the level of disruption to the flow that is caused by changes in Sun’s equatorial rotation speed. Based on our claim that changes in the Sun’s equatorial rotation rate are synchronized with changes in the Sun’s orbital motion about the barycentre, we propose that the mean period for the Sun’s meridional flow is set by a Synodic resonance between the flow period (∼22.3 yr), the overall 178.7-yr repetition period for the solar orbital motion, and the 19.86-yr synodic period of Jupiter and Saturn. |
Keywords | sun; sunspots; rotation; stars; planetary systems |
ANZSRC Field of Research 2020 | 510109. Stellar astronomy and planetary systems |
519999. Other physical sciences not elsewhere classified | |
Public Notes | File reproduced in accordance with the copyright policy of the publisher/author. |
Byline Affiliations | Department of Education, Queensland |
Centre for Astronomy, Solar Radiation and Climate |
https://research.usq.edu.au/item/9yy45/does-a-spin-orbit-coupling-between-the-sun-and-the-jovian-planets-govern-the-solar-cycle
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