PMO OpenIR
Large-amplitude Longitudinal Oscillations in a Solar Filament
Zhang, Q. M.1,2; Li, T.2,3; Zheng, R. S.4; Su, Y. N.1; Ji, H. S.1
2017-06-10
Source PublicationASTROPHYSICAL JOURNAL
ISSN0004-637X
Volume842Issue:1Pages:14
Corresponding AuthorZhang, Q. M.(zhangqm@pmo.ac.cn)
AbstractIn this paper, we report our multiwavelength observations of the large-amplitude longitudinal oscillations of a filament observed. on 2015 May 3. Located next to active region 12335, the sigmoidal filament was observed by the ground-based H alpha telescopes from the Global Oscillation Network Group and by the Atmospheric Imaging Assembly instrument on. board the Solar Dynamics Observatory. The filament oscillations were most probably triggered by the magnetic reconnection in the filament channel, which is characterized by the bidirectional flows, brightenings in EUV and soft X-ray, and magnetic cancellation in the photosphere. The directions of oscillations have angles of 4 degrees-36 degrees with respect to the filament axis. The whole filament did not oscillate in phase as a rigid body. Meanwhile, the oscillation. periods (3100-4400 s). have a spatial dependence, implying that the curvature radii (R) of the magnetic dips are different at different positions. The values of R are estimated to be 69.4-133.9 Mm, and the minimum transverse magnetic field of the dips is estimated to be 15 G. The amplitudes of S5-S8 grew with time, while the amplitudes of S9-S14 damped with time. The oscillation. amplitudes. range from a few to ten Mm, and the maximum. velocity can reach 30 km s(-1). Interestingly, the filament experienced mass drainage southward. at a speed of similar to 27 km s(-1). The oscillations continued after the mass drainage and lasted for more than 11 hr. After the mass drainage, the oscillation. phases. did not change much. The periods of S5-S8 decreased, while the periods of S9-S14 increased. The amplitudes of S5-S8 damped with time, while the amplitudes of S9-S14 grew. Most of the damping (growing) ratios are between -9 and 14. We offer. a schematic cartoon to explain the complex behaviors of oscillations by introducing thread-thread interaction.
KeywordSun: filaments, prominences Sun: oscillations Sun: magnetic fields Supporting material: animations
DOI10.3847/1538-4357/aa73d2
WOS KeywordEXTREME-ULTRAVIOLET WAVE ; MAGNETIC-FIELD GEOMETRY ; POLAR CROWN PROMINENCE ; ACTIVE-REGION FILAMENT ; TRANSVERSE OSCILLATIONS ; MORETON WAVE ; PERIODIC MOTION ; CORONAL WAVES ; DYNAMICS ; FLARE
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000403205400012
PublisherIOP PUBLISHING LTD
Citation statistics
Cited Times:8[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/22968
Collection中国科学院紫金山天文台
Corresponding AuthorZhang, Q. M.
Affiliation1.Chinese Acad Sci, Key Lab Dark Matter & Space Sci, Purple Mt Observ, Nanjing 210008, Jiangsu, Peoples R China
2.Natl Astron Observ, CAS Key Lab Solar Act, Beijing 100012, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Shandong Univ, Inst Space Sci, Weihai 264209, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Q. M.,Li, T.,Zheng, R. S.,et al. Large-amplitude Longitudinal Oscillations in a Solar Filament[J]. ASTROPHYSICAL JOURNAL,2017,842(1):14.
APA Zhang, Q. M.,Li, T.,Zheng, R. S.,Su, Y. N.,&Ji, H. S..(2017).Large-amplitude Longitudinal Oscillations in a Solar Filament.ASTROPHYSICAL JOURNAL,842(1),14.
MLA Zhang, Q. M.,et al."Large-amplitude Longitudinal Oscillations in a Solar Filament".ASTROPHYSICAL JOURNAL 842.1(2017):14.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Zhang, Q. M.]'s Articles
[Li, T.]'s Articles
[Zheng, R. S.]'s Articles
Baidu academic
Similar articles in Baidu academic
[Zhang, Q. M.]'s Articles
[Li, T.]'s Articles
[Zheng, R. S.]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Zhang, Q. M.]'s Articles
[Li, T.]'s Articles
[Zheng, R. S.]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.