最新最清晰的太阳图像揭示了太阳的不稳定性
(原标题: New Sharpest Image of the Sun Uncovers Instability)
2026-08-06
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太阳最清晰的新图像显示了什么？不稳定。更明确地说，是一种叫做开尔文-亥姆霍兹不稳定性（KHI）的相互作用过程。当两股流相互流过时，这种不稳定性会产生波浪和漩涡——在这种情况下，太阳磁等离子体的可变流。长期以来的假设是发生在太阳表面，KHI条纹和漩涡在最近由美国夏威夷的井上太阳望远镜拍摄的刚刚发布的高分辨率图像中得到了证实。这张特色的假黄色图像实际上是以深蓝色拍摄的，是迄今为止在可见光下分辨率最高的太阳图像。它的跨度大约是地球的半径，但其最精细的细节是城市大小。可见的是几个光滑的顶部变化的太阳颗粒，而在花状结构的边缘已经发现了多个KHI漩涡。未来的研究可能会调查KHI如何帮助能量、磁场移动，甚至可能加热周围的日冕。
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What does the new sharpest image of our Sun show? Instability. To be clear, a certain kind of interactive process called the Kelvin-Helmholtz instability (KHI). This instability can create waves and swirls when two streams flow past each other -- in this case variable streams of solar magnetic plasma. Long hypothesized to occur on the Sun's surface, KHI streaks and swirls were confirmed in just-released dramatic high-resolution images taken recently by the Inouye Solar Telescope in Hawaii, USA. The featured false-yellow image, actually taken in deep blue, is the highest resolution image yet of the Sun in visible light. It spans about the radius of the Earth, but its finest details are city sized. Visible are several smooth tops of changing solar granules, while the edges of the flower-like structures have been found to harbor multiple KHI swirls. Future research may investigate how the KHI helps move energy, magnetic fields, and may even heat the surrounding solar corona.