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Fundamental and Harmonic Oscillations in Neighboring Coronal Loops
Li HB(李洪波)1,2,3; Liu Y(刘煜)1,2; Tam, Kuan Vai4; Li, Hongbo(Chinese Acad Sci, Yunnan Observ, Kunming 650011, Peoples R China)
发表期刊ASTROPHYSICAL JOURNAL
2017-06-20
卷号842期号:2
DOI10.3847/1538-4357/aa7677
产权排序第1完成单位
收录类别SCI
关键词Sun: Activity Sun: Corona Sun: Oscillations
摘要We present observations of multimode (fundamental and harmonic) oscillations in a loop system, which appear to be simultaneously excited by a GOES C-class flare. Analysis of the periodic oscillations reveals that (1) the primary loop with a period of P-a approximate to 4 minutes and a secondary loop with two periods of Pa approximate to 4 minutes and Pb approximate to 2 minutes are detected simultaneously in closely spaced loop strands; (2) both oscillation components have their peak amplitudes near the loop apex, while in the second loop the low-frequency component Pa dominates in a loop segment that is two times larger than the high-frequency component Pb; (3) the harmonic mode Pb shows the largest deviation from a sinusoidal loop shape at the loop apex. We conclude that multiple harmonic modes with different displacement profiles can be excited simultaneously even in closely spaced strands, similar to the overtones of a violin string.
项目资助者National Scientific Foundation of China(NSFC 11533009) ; Key Laboratory of Geospace Environment, CAS, University of Science & Technology of China ; Macao Science and Technology Development Fund(FDCT-16-003-SSI)
语种英语
学科领域天文学
文章类型Article
ISSN0004-637X
URL查看原文
WOS记录号WOS:000403775600001
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]DYNAMICS-OBSERVATORY SDO ; TRANSVERSE OSCILLATIONS ; PROMINENCE ; SEISMOLOGY ; FIBRILS ; SDO/AIA ; SYSTEM ; ARCADE ; MODES ; FLARE
引用统计
被引频次:3[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/10142
专题选址与日冕观测组
通讯作者Li, Hongbo(Chinese Acad Sci, Yunnan Observ, Kunming 650011, Peoples R China)
作者单位1.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650011, China
2.Key Laboratory of Geospace Environment, Chinese Academy of Sciences, University of Science & Technology of China, Hefei 230026, China
3.University of Chinese Academy of Sciences, Beijing 100049, China
4.Space Science Institute, Macau University of Science and Technology, Avenida Wai Long, Taipa, Macau, China
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GB/T 7714
Li HB,Liu Y,Tam, Kuan Vai,et al. Fundamental and Harmonic Oscillations in Neighboring Coronal Loops[J]. ASTROPHYSICAL JOURNAL,2017,842(2).
APA Li HB,Liu Y,Tam, Kuan Vai,&Li, Hongbo.(2017).Fundamental and Harmonic Oscillations in Neighboring Coronal Loops.ASTROPHYSICAL JOURNAL,842(2).
MLA Li HB,et al."Fundamental and Harmonic Oscillations in Neighboring Coronal Loops".ASTROPHYSICAL JOURNAL 842.2(2017).
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