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Origin of the Chromospheric Umbral Waves in Sunspots

文献类型：期刊论文

作者Zhang XS(张鑫生)4,5; Yan XL(闫晓理)3,5; Xue ZK(薛志科)3,5; Wang JC(王金成)3,5; Xu Z(徐喆)3,5; Li, Qiaoling1,2; Peng Y(彭洋)4,5; Yang LP(杨丽平)4,5
刊名SOLAR PHYSICS
出版日期2024-05
卷号299期号:5
关键词Sunspots Chromosphere Oscillations Magnetohydrodynamics
ISSN号0038-0938
DOI10.1007/s11207-024-02323-w
产权排序第1完成单位
文献子类Article
英文摘要Oscillations are ubiquitous in sunspots and the associated higher atmospheres. However, it is still unclear whether these oscillations are driven by the external acoustic waves (p-modes) or generated by the internal magnetoconvection. To obtain clues about the driving source of umbral waves in sunspots, we analyzed the spiral wave patterns (SWPs) in two sunspots registered by IRIS MgII 2796 & Aring; slit-jaw images. By tracking the motion of the SWPs, we found for the first time that two one-armed SWPs coexist in the umbra, and they can rotate either in the same or opposite directions. Furthermore, by analyzing the spatial distribution of the oscillation centers of the one-armed SWPs within the umbra (the oscillation center is defined as the location where the SWP first appears), we found that the chromospheric umbral waves repeatedly originate from the regions with high oscillation power and most of the umbral waves occur in the dark nuclei and strong magnetic field regions of the umbra. Our study results indicate that the chromospheric umbral waves are likely excited by the p-mode oscillations.
学科主题天文学 ; 太阳与太阳系
URL标识查看原文
出版地VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
WOS关键词P-MODE ABSORPTION ; MAGNETIC-FIELDS ; PENUMBRAL WAVES ; OSCILLATIONS ; SIMULATIONS ; GENERATION ; IMAGE
资助项目Strategic Priority Research Program of the Chinese Academy of Sciences
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:001235325500003
出版者SPRINGER
资助机构Strategic Priority Research Program of the Chinese Academy of Sciences
版本出版稿
源URL[http://ir.ynao.ac.cn/handle/114a53/27346]  
专题云南天文台_抚仙湖太阳观测站
云南天文台_光纤阵列太阳光学望远镜研究组
作者单位1.Department of Astronomy, Key Laboratory of Astroparticle Physics of Yunnan Province, Yunnan University, Kunming, 650091, China
2.Department of Physics, Yunnan University, Kunming, 650091, China;
3.Yunnan Key Laboratory of Solar Physics and Space Science, Kunming, 650216, China;
4.University of Chinese Academy of Sciences, Beijing, 100049, China;
5.Yunnan Observatories, Chinese Academy of Sciences, Kunming, 650216, China;
推荐引用方式
GB/T 7714		 Zhang XS,Yan XL,Xue ZK,et al. Origin of the Chromospheric Umbral Waves in Sunspots[J]. SOLAR PHYSICS,2024,299(5).
APA 张鑫生.,闫晓理.,薛志科.,王金成.,徐喆.,...&杨丽平.(2024).Origin of the Chromospheric Umbral Waves in Sunspots.SOLAR PHYSICS,299(5).
MLA 张鑫生,et al."Origin of the Chromospheric Umbral Waves in Sunspots".SOLAR PHYSICS 299.5(2024).

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来源：云南天文台

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