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Vertical Oscillation of a Coronal Cavity Triggered by an EUV Wave
Zhang, Q. M.1,2; Ji, H. S.1
2018-06-20
Source PublicationASTROPHYSICAL JOURNAL
ISSN0004-637X
Volume860Issue:2Pages:10
Corresponding AuthorZhang, Q. M.(zhangqm@pmo.ac.cn)
AbstractIn this paper, we report our multiwavelength observations of the vertical oscillation of a coronal cavity on 2011 March 16. The elliptical cavity with an underlying horn-like quiescent prominence was observed by the Atmospheric Imaging Assembly on board the Solar Dynamics Observatory. The width and height of the cavity are 150 '' and 240 '', and the centroid of cavity is 128 '' above the solar surface. At similar to 17: 50 UT, a C3.8 two-ribbon flare took place in active region 11169 close to the solar western limb. Meanwhile, a partial halo coronal mass ejection erupted and propagated at a linear speed of similar to 682 km s(-1). Associated with the eruption, a coronal extremeultraviolet (EUV) wave was generated and propagated in the northeast direction at a speed of similar to 120 km s(-1). Once the EUV wave arrived at the cavity from the top, it pushed the large-scale overlying magnetic field lines downward before bouncing back. At the same time, the cavity started to oscillate coherently in the vertical direction and lasted for similar to 2 cycles before disappearing. The amplitude, period, and damping time are 2.4-3.5 Mm, 29-37 minutes, and 26-78 minutes, respectively. The vertical oscillation of the cavity is explained by a global standing MHD wave of fast kink mode. To estimate the magnetic field strength of the cavity, we use two independent methods of prominence seismology. It is found that the magnetic field strength is only a few Gauss and less than 10 G.
KeywordSun: coronal mass ejections (CMEs) Sun: filaments, prominences Sun: flares Sun: oscillations
DOI10.3847/1538-4357/aac37e
WOS KeywordDYNAMICS-OBSERVATORY SDO ; SOLAR PROMINENCE ; QUIESCENT PROMINENCE ; MAGNETOHYDRODYNAMIC WAVES ; MAGNETIC-STRUCTURE ; MORETON WAVE ; FLUX ROPE ; FILAMENT ; ERUPTION ; EIT
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000435654900003
PublisherIOP PUBLISHING LTD
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/21840
Collection中国科学院紫金山天文台
Corresponding AuthorZhang, Q. M.
Affiliation1.Chinese Acad Sci, Purple Mt Observ, Key Lab Dark Matter & Space Sci, Nanjing 210034, Jiangsu, Peoples R China
2.Natl Astron Observ, CAS Key Lab Solar Act, Beijing 100012, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Q. M.,Ji, H. S.. Vertical Oscillation of a Coronal Cavity Triggered by an EUV Wave[J]. ASTROPHYSICAL JOURNAL,2018,860(2):10.
APA Zhang, Q. M.,&Ji, H. S..(2018).Vertical Oscillation of a Coronal Cavity Triggered by an EUV Wave.ASTROPHYSICAL JOURNAL,860(2),10.
MLA Zhang, Q. M.,et al."Vertical Oscillation of a Coronal Cavity Triggered by an EUV Wave".ASTROPHYSICAL JOURNAL 860.2(2018):10.
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