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OBSERVATIONAL STUDY OF THE QUASI-PERIODIC FAST-PROPAGATING MAGNETOSONIC WAVES AND THE ASSOCIATED FLARE ON 2011 MAY 30
Shen YD(申远灯)1,2; Liu Y(刘煜)1; Shen, YD (reprint author), Chinese Acad Sci, Yunnan Astron Observ, POB 110, Kunming 650011, Peoples R China.
Source PublicationASTROPHYSICAL JOURNAL
2012-07-01
Volume753Issue:1
DOI10.1088/0004-637X/753/1/53
Contribution Rank第1完成单位
Indexed BySCI
KeywordSun: Activity Sun: Corona Sun: Coronal Mass Ejections (Cmes) Sun: Flares Sun: Oscillations
AbstractOn 2011 May 30, quasi-periodic fast-propagating (QFP) magnetosonic waves accompanied by a C2.8 flare were directly imaged by the Atmospheric Imaging Assembly instrument on board the Solar Dynamics Observatory. The QFP waves successively emanated from the flare kernel, they propagated along a cluster of open coronal loops with a phase speed of similar to 834 km s(-1) during the flare's rising phase, and the multiple arc-shaped wave trains can be fitted with a series of concentric circles. We generate the k-omega diagram of the Fourier power and find a straight ridge that represents the dispersion relation of the waves. Along the ridge, we find a lot of prominent nodes which represent the available frequencies of the QFP waves. On the other hand, the frequencies of the flare are also obtained by analyzing the flare light curves using the wavelet technique. The results indicate that almost all the main frequencies of the flare are consistent with those of the QFP waves. This suggests that the flare and the QFP waves were possibly excited by a common physical origin. On the other hand, a few low frequencies (e.g., 2.5 mHz (400 s) and 0.7 mHz (1428 s)) revealed by the k-omega diagram cannot be found in the accompanying flare. We propose that these low frequencies were possibly due to the leakage of the pressure-driven p-mode oscillations from the photosphere into the low corona, which should be a noticeable mechanism for driving the QFP waves observed in the corona.
Funding OrganizationNatural Science Foundation of China [10933003, 11078004, 11073050] ; National Key Research Science Foundation [2011CB811400]
Language英语
Subject AreaAstronomy & Astrophysics
SubtypeArticle
ISSN0004-637X
URL查看原文
Archive Date2012-07-02
WOS IDWOS:000305632500053
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordSLOW MAGNETOACOUSTIC WAVES ; CORONAL MASS EJECTION ; SOLAR ACTIVE-REGION ; X-RAY PULSATIONS ; TRANSITION-REGION ; ALFVEN WAVES ; LOOP OSCILLATIONS ; EIT WAVES ; MAGNETOHYDRODYNAMIC OSCILLATIONS ; PHOTOSPHERIC OSCILLATIONS
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Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/7183
Collection选址与日冕观测组
Corresponding AuthorShen, YD (reprint author), Chinese Acad Sci, Yunnan Astron Observ, POB 110, Kunming 650011, Peoples R China.
Affiliation1.Yunnan Astronomical Observatory, Chinese Academy of Sciences, P.O. Box 110, Kunming 650011, China
2.Graduate University of Chinese Academy of Sciences, Beijing 100049, China
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Shen YD,Liu Y,Shen, YD . OBSERVATIONAL STUDY OF THE QUASI-PERIODIC FAST-PROPAGATING MAGNETOSONIC WAVES AND THE ASSOCIATED FLARE ON 2011 MAY 30[J]. ASTROPHYSICAL JOURNAL,2012,753(1).
APA Shen YD,Liu Y,&Shen, YD .(2012).OBSERVATIONAL STUDY OF THE QUASI-PERIODIC FAST-PROPAGATING MAGNETOSONIC WAVES AND THE ASSOCIATED FLARE ON 2011 MAY 30.ASTROPHYSICAL JOURNAL,753(1).
MLA Shen YD,et al."OBSERVATIONAL STUDY OF THE QUASI-PERIODIC FAST-PROPAGATING MAGNETOSONIC WAVES AND THE ASSOCIATED FLARE ON 2011 MAY 30".ASTROPHYSICAL JOURNAL 753.1(2012).
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