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A Scenario for Origin of Global 4 mHz Oscillations in Solar Corona

文献类型：期刊论文

作者Xue, Li2; Jiao CL(焦承亮)1,3,4; Zhang, Lixin2
刊名UNIVERSE
出版日期2025-01
卷号11期号:1
关键词hydrodynamics methods: numerical sun: atmosphere sun: corona
DOI10.3390/universe11010014
产权排序第2完成单位
文献子类Article
英文摘要We establish a spherically symmetric model of solar atmosphere, which consists of the whole chromosphere and low corona below the 1.25 solar radius. It is a hydrodynamic model with heating in the chromosphere through an artificial energy flux. We performed a series of simulations with our model and found oscillations with a peak frequency of similar to 4 mHz in the power spectrum. We confirmed that this resulted from the p-mode excited in the transition region and amplified in a resonant cavity situated in the height range similar to 4x103-2x104 km. This result is consistent with global observations of Alfv & eacute;nic waves in corona and can naturally explain the observational ubiquity of 4mHz without the difficulty of the p-mode passing through the acoustic-damping chromosphere. We also confirmed that acoustic shock waves alone cannot heat the corona to the observed temperature, and found mass upflows in the height range similar to 7x10(3)-7x10(4) km in our model, which pumped the dense and cool plasma into the corona and might be the mass supplier for solar prominences.
学科主题天文学 ; 太阳与太阳系
URL标识查看原文
出版地ST ALBAN-ANLAGE 66, CH-4052 BASEL, SWITZERLAND
WOS关键词ACOUSTIC-WAVES ; ALFVEN WAVES ; ENERGY FLUX ; ATMOSPHERE ; CHROMOSPHERE ; PROPAGATION ; FREQUENCY ; SUFFICIENT
资助项目National Key R&D Program of China; National Natural Science Foundation of China[11703083]; National Natural Science Foundation of China[12221003]; Natural Science Foundation of Fujian Province of China
WOS研究方向Astronomy & Astrophysics ; Physics
语种英语
WOS记录号WOS:001405935200001
出版者MDPI
资助机构National Key R&D Program of China ; National Natural Science Foundation of China[11703083, 12221003] ; Natural Science Foundation of Fujian Province of China[2023J01008] ; [2023YFA1607902]
版本出版稿
源URL[http://ir.ynao.ac.cn/handle/114a53/28060]  
专题云南天文台_双星与变星研究组
云南天文台_中国科学院天体结构与演化重点实验室
作者单位1.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, 396 Yangfangwang, Guandu District, Kunming 650216, China
2.Department of Astronomy, Xiamen Univesity, Xiamen 361005, China;
3.Yunnan Observatories, Chinese Academy of Sciences, 396 Yangfangwang, Guandu District, Kunming 650216, China;
4.Center for Astronomical Mega-Science, Chinese Academy of Sciences 20A Datun Road, Chaoyang District, Beijing 100012, China;
推荐引用方式
GB/T 7714		 Xue, Li,Jiao CL,Zhang, Lixin. A Scenario for Origin of Global 4 mHz Oscillations in Solar Corona[J]. UNIVERSE,2025,11(1).
APA Xue, Li,焦承亮,&Zhang, Lixin.(2025).A Scenario for Origin of Global 4 mHz Oscillations in Solar Corona.UNIVERSE,11(1).
MLA Xue, Li,et al."A Scenario for Origin of Global 4 mHz Oscillations in Solar Corona".UNIVERSE 11.1(2025).

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来源：云南天文台

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