物理
磁流体驱动
波前
日冕(行星地质学)
磁流体力学
日冕物质抛射
天体物理学
计算物理学
光学
等离子体
太阳风
量子力学
天体生物学
维纳斯
作者
Xinping Zhou,Yuandeng Shen,Ding Yuan,Rony Keppens,Xiaozhou Zhao,Lin Fu,Zehao Tang,Jiaoyang Wang,Chen Zhou
标识
DOI:10.1038/s41467-024-46846-z
摘要
Abstract Electromagnetic wave lensing, a common physical phenomenon recognized in visible light for centuries, finds extensive applications in manipulating light in optical systems such as telescopes and cameras. Magnetohydrodynamic wave is a common perturbation phenomenon in the corona. By using high spatio-temporal resolution observations from the Solar Dynamics Observatory, here, we report the observation of a magnetohydrodynamic wave lensing in the highly ionized and magnetized coronal plasma, where quasi-periodic wavefronts emanated from a flare converged at a specific point after traversing a coronal hole. The entire process resembles an electromagnetic wave lensing from the source to the focus. Meanwhile, the magnetohydrodynamic wave lensing is well reproduced through a magnetohydrodynamic numerical simulation with full spatio-temporal resolution. We further investigate potential applications for coronal seismology, as the lensing process encodes information on the Alfvén speed, in conjunction with favorable geometric and density variations.
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