Why Do Chromospheric Oscillations in Sunspot Umbrae Appear to Propagate Downward?
Umbral oscillations constitute the most noticeable chromospheric feature of sunspot umbrae—large-amplitude oscillations of intensity (umbral flashes, if very strong) and line-of-sight velocity, with periods of about 3 minutes. These umbral oscillations are usually interpreted as acoustic waves propa...
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| Principais autores: | , , , , , , |
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| 格式: | Artigo |
| 語言: | Inglês |
| 出版: |
IOP Publishing
2023-01-01
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| 叢編: | The Astrophysical Journal Letters |
| 主題: | |
| 在線閱讀: | https://doi.org/10.3847/2041-8213/acba7d |
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