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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.
发表期刊ASTROPHYSICAL JOURNAL
2012-07-01
卷号753期号:1
DOI10.1088/0004-637X/753/1/53
产权排序第1完成单位
收录类别SCI
关键词Sun: Activity Sun: Corona Sun: Coronal Mass Ejections (Cmes) Sun: Flares Sun: Oscillations
摘要On 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.
项目资助者Natural Science Foundation of China [10933003, 11078004, 11073050] ; National Key Research Science Foundation [2011CB811400]
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN0004-637X
URL查看原文
归档日期2012-07-02
WOS记录号WOS:000305632500053
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]SLOW 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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被引频次:42[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/114a53/7183
专题选址与日冕观测组
通讯作者Shen, YD (reprint author), Chinese Acad Sci, Yunnan Astron Observ, POB 110, Kunming 650011, Peoples R China.
作者单位1.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
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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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