Historic Telescope Images Reveal Unprecedented Solar Surface Vortices

Scientists have captured groundbreaking images of the sun's surface, revealing intricate details never before seen. Using the Daniel K. Inouye Solar Telescope in Hawaii, researchers focused on a magnetically active region near a sunspot, providing an unprecedented look at the sun's photosphere.

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The sun is the source of this energy and all those space weather events. To figure out and eventually predict space weather, we need to understand solar physics at the smallest scales.

The high-resolution images and accelerated videos offer a glimpse into the complex and dynamic nature of the sun's visible surface. This layer is shaped by magnetic fields and flows of hot plasma. By combining these visual observations with computer simulations, scientists have made a significant physical discovery: small vortices on the solar surface.

These vortices, identified as Kelvin-Helmholtz instability (KHI), could be the key to understanding long-standing solar mysteries, such as why the sun's outer atmosphere, the corona, is significantly hotter than its surface. The research, published in Nature, explains that KHI occurs when fluids moving at different speeds interact, creating spiral-shaped vortices.

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Although theoretical models predicted that conditions suitable for Kelvin-Helmholtz instability could form in the photosphere, seeing these structures, so widespread across the surface, was a huge surprise.

While KHI has been observed in Earth's oceans and atmospheres of gas giants, its widespread presence on the sun's surface was a major surprise. Scientists believe these structures are driven by the magnetic field, which is distorted and moved by hot gas. Understanding these smallest-scale solar physics phenomena is crucial for predicting and mitigating the effects of space weather, which can disrupt power grids, satellite operations, and even pose risks to astronauts.

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The formation of vortex structures in the sun has long been one of the main questions in solar physics. And now, for the first time, we have managed to determine both their origin and their mechanism of action.