Sunspots as vortex rings

A recent article explored half vortex rings in water, that showed a fairly stable pair of vortices on the surface of the water – see: Vortex – Physics – Dimensions

Sunspots are often described as pairs of vortices. Perhaps they are vortex rings in the plasma of the sun that we can observe when they intersect the surface.

GIANT SUNSPOT SET TO RETURN – A Huge Eruption of Hot Plasma Blasted Off this Region


Here is a fascinating display of vortex calculations:
The Secret Life of Vortices: Evolution and Destruction of Vortical Flows


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