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
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出版日期 | 2024-10-22 |
卷号 | 690 |
关键词 | Sun: corona Sun: oscillations |
ISSN号 | 0004-6361 |
DOI | 10.1051/0004-6361/202348823 |
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; |
推荐引用方式 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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