Resolved magnetohydrodynamic wave lensing in the solar corona
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arXiv
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| Format: | Preprint |
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2024
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| author | Zhou, Xinping Shen, Yuandeng Yuan, Ding Keppens, Rony Zhao, Xiaozhou Fu, Libo Tang, Zehao Wang, Jiaoyang Zhou, Chengrui |
| author_facet | Zhou, Xinping Shen, Yuandeng Yuan, Ding Keppens, Rony Zhao, Xiaozhou Fu, Libo Tang, Zehao Wang, Jiaoyang Zhou, Chengrui |
| contents | 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. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2404_12044 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Resolved magnetohydrodynamic wave lensing in the solar corona Zhou, Xinping Shen, Yuandeng Yuan, Ding Keppens, Rony Zhao, Xiaozhou Fu, Libo Tang, Zehao Wang, Jiaoyang Zhou, Chengrui Solar and Stellar Astrophysics Astrophysics of Galaxies 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. |
| title | Resolved magnetohydrodynamic wave lensing in the solar corona |
| topic | Solar and Stellar Astrophysics Astrophysics of Galaxies |
| url | https://arxiv.org/abs/2404.12044 |