Rotation suppresses giant-scale solar convection
Abstract
The entire Sun completes a full rotation in roughly 28 d. Within the outer 30% of the solar interior, turbulent thermal convection powers fluid outward. Rotation deflects the fluid and determines the morphology of eddies and large-scale shear. Such flows are the ultimate agents of astrophysical and planetary magnetic field generation, one of the most important open problems in all of science. Our results make theoretical predictions regarding the Sun's internal flow structure and rotational constraint. We predict tall and slender vortices persisting throughout much of the convection zone under the sway of strong rotation. We also clarify previous observational discrepancies and explain why such structures have been hard to reproduce in numerical simulations.
- Publication:
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Proceedings of the National Academy of Science
- Pub Date:
- August 2021
- DOI:
- Bibcode:
- 2021PNAS..11822518V
- Keywords:
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- solar convection;
- Rossby number;
- rapid rotation;
- differential rotation