Unprecedented Sun Images Reveal Swirling Vortices

Scientists have captured the most detailed images yet of the Sun's visible surface, revealing a dynamic landscape of "feathered structures and small whirlwinds." The unprecedented views, obtained using the U.S. National Science Foundation's Daniel K. Inouye Solar Telescope in Hawaii, show swirling patterns at the edges of magnetic regions.

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It reminds me of famous paintings, like the swirling skies of Van Gogh's 'Starry Night.'

Researchers described the phenomenon as resembling "swirling skies" in famous paintings, comparing it to the "Starry Night" by Van Gogh. The study, published in the journal Nature, attributes these undulations to the Kelvin-Helmholtz instability, a physical process observed when two fluids slide past each other at different speeds, creating waves similar to those on the sea.

While this instability has been seen in Earth's lakes and the atmospheres of planets like Jupiter and Saturn, "it had never been detected at this level on the solar surface," said co-author Friedrich Wöger of the National Solar Observatory. The observations precisely matched computer simulations, which show vortices forming as the Sun's constant boiling collides with its magnetic fields, twisting their lines of force.

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it had never been detected at this level on the solar surface.

This finding is significant not only for understanding how the Sun transports energy to heat its outer atmosphere, the corona, to extreme temperatures. It also sheds light on how these vortices act as "engines" of magnetic energy, which is crucial for more accurate solar storm predictions. Such storms can disrupt GPS communications and create spectacular polar auroras when they impact Earth.

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The discovery of the Kelvin-Helmholtz instability in the solar photosphere, supported by the analysis of numerical simulations, represents a major step forward in our understanding of the dynamics and evolution of solar and stellar plasma, and will serve as a basis for future discoveries.