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题名:
Fine-scale structures and material flows of quiescent filaments observed by the New Vacuum Solar Telescope
作者: Yan XL(闫晓理)1,2; Xue ZK(薛志科)1; Xiang YY(向永源)1; Yang LH(杨丽恒)1
刊名: RESEARCH IN ASTRONOMY AND ASTROPHYSICS
出版日期: 2015-10
卷号: 15, 期号:10, 页码:1725-1734
DOI: 10.1088/1674-4527/15/10/009
学科分类: Astronomy & Astrophysics
产权排序: 第1完成单位
收录类别: SCI
通讯作者: Yan, XL (reprint author), Chinese Acad Sci, Yunnan Observ, Kunming 650011, Peoples R China.
关键词: Sun: filaments, prominences ; Sun: activity ; Sun: corona
英文摘要: Study of the small-scale structures and material flows associated with solar quiescent filaments is very important for understanding the formation and equilibrium of solar filaments. Using high resolution H alpha data observed by the New Vacuum Solar Telescope, we present the structures of barbs and material flows along the threads across the spine in two quiescent filaments on 2013 September 29 and on 2012 November 2, respectively. During the evolution of the filament barb, several parallel tube-shaped structures formed and the width of the structures ranged from about 2.3 Mm to 3.3Mm. The parallel tube-shaped structures merged together accompanied by material flows from the spine to the barb. Moreover, the boundary between the barb and surrounding atmosphere was very neat. The counter-streaming flows were not found to appear alternately in the adjacent threads of the filament. However, the large-scale patchy counter-streaming flows were detected in the filament. The flows in one patch of the filament have the same direction but flows in the adjacent patch have opposite direction. The patches of two opposite flows with a size of about 10'' were alternately exhibited along the spine of the filament. The velocity of these material flows ranged from 5.6 km s(-1) to 15.0 km s(-1). The material flows along the threads of the filament did not change their direction for about two hours and fourteen minutes during the evolution of the filament. Our results confirm that the large-scale counter-streaming flows with a certain width along the threads of solar filaments exist and are coaligned well with the threads.
项目资助者: National Natural Science Foundation of China (NSFC) [11373066, 11373065, 11203077] ; Yunnan Science Foundation of China [2013FB086] ; Talent Project of Western Light of Chinese Academy of Sciences ; National Basic Research Program of China (973 program) [G2011CB811400] ; Key Laboratory of Solar Activity of CAS [KLSA 201303, KLSA 201412, KLSA 201407]
语种: 英语
原文出处: 查看原文
ISSN号: 1674-4527
文章类型: Article
归档日期: 2015-09-15
WOS标题词: Science & Technology ; Physical Sciences
研究领域[WOS]: Astronomy & Astrophysics
类目[WOS]: Astronomy & Astrophysics
关键词[WOS]: MAGNETIC-STRUCTURE ; SPECKLE MASKING ; PROMINENCE ; DYNAMICS ; THREADS ; OSCILLATIONS ; HINODE/SOT ; ERUPTION
WOS记录号: WOS:000362825700009
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内容类型: 期刊论文
URI标识: http://ir.ynao.ac.cn/handle/114a53/4712
Appears in Collections:抚仙湖太阳观测站_期刊论文

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作者单位: 1.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650011, China
2.Key Laboratory of Solar Activity, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China

Recommended Citation:
Yan XL,Xue ZK,Xiang YY,et al. Fine-scale structures and material flows of quiescent filaments observed by the New Vacuum Solar Telescope[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2015,15(10):1725-1734.
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