中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Investigating high-frequency quasi-periodic oscillations in the 6374 Å red coronal line observed during the total solar eclipse on August 21, 2017

文献类型:期刊论文

作者Liang Y(梁昱)1,2
刊名ASTRONOMY & ASTROPHYSICS
出版日期2024-10-22
卷号690
关键词Sun: corona Sun: oscillations
ISSN号0004-6361
DOI10.1051/0004-6361/202348823
产权排序第2完成单位
文献子类Article
英文摘要

Context. We present the results of the search for high-frequency quasi-periodic oscillations (HFQPOs) in the 6374-& Aring; red line emission from the solar corona during the 2017 total solar eclipse (TSE). Aims. The existence of HFQPOs of coronal intensity remains unclear. Motivated by previous observations, this paper focuses on searching for the HFQPOs (> 0.1 Hz) during the 2017 TSE. Methods. Wavelet analysis tools were used to analyze the radiation intensity oscillations in different height layers, local regions of interest (such as the east coronal loop, west cavity, etc.), and coronal feature points as well as changes in oscillations along coronal feature structures and the kinematic wobble of the coronal magnetic features. Results. We have observed oscillatory signals at multiple spatial locations, which reveal the existence of quasi-periodic slow magnetoacoustic waves. These signals display periods ranging from approximately 3 to 9 seconds, with a notable focus on periods around 4 seconds. Conclusions. High-frequency quasi-periodic slow magnetoacoustic oscillations (with periods less than 9.63 seconds) have been identified in the inner corona (at heights less than 1.4 R-circle dot) in the 6374 & Aring; red coronal line radiation.

学科主题天文学 ; 太阳与太阳系
URL标识查看原文
出版地17, AVE DU HOGGAR, PA COURTABOEUF, BP 112, F-91944 LES ULIS CEDEX A, FRANCE
WOS关键词WAVES ; REGISTRATION ; SEARCH ; NANOFLARES ; ENERGY ; SECIS ; HEAT
资助项目national natural science fund of China[12003066] ; National Natural Science Foundation of China
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:001340368800010
出版者EDP SCIENCES S A
资助机构national natural science fund of China[12003066] ; National Natural Science Foundation of China
版本出版稿
源URL[http://ir.ynao.ac.cn/handle/114a53/27667]  
专题云南天文台_光纤阵列太阳光学望远镜研究组
作者单位1.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650011, China
2.Shanghai Astronomical Observatory, Chinese Academy of Sciences, Shanghai 200030, China;
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GB/T 7714
Liang Y. Investigating high-frequency quasi-periodic oscillations in the 6374 Å red coronal line observed during the total solar eclipse on August 21, 2017[J]. ASTRONOMY & ASTROPHYSICS,2024,690.
APA Liang Y.(2024).Investigating high-frequency quasi-periodic oscillations in the 6374 Å red coronal line observed during the total solar eclipse on August 21, 2017.ASTRONOMY & ASTROPHYSICS,690.
MLA Liang Y."Investigating high-frequency quasi-periodic oscillations in the 6374 Å red coronal line observed during the total solar eclipse on August 21, 2017".ASTRONOMY & ASTROPHYSICS 690(2024).

入库方式: OAI收割

来源:云南天文台

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