Two Kinds of Dynamic Behavior in a Quiescent Prominence Observed by the NVST
文献类型：期刊论文
| 作者 | Li, Dong1,2,3; Shen, Yuandeng2,4; Ning, Zongjun1; Zhang, Qingmin1,3; Zhou, Tuanhui1 |
| 刊名 | ASTROPHYSICAL JOURNAL
 |
| 出版日期 | 2018-08-20 |
| 卷号 | 863期号:2页码:11 |
| ISSN号 | 0004-637X |
| 关键词 | instabilities magnetohydrodynamics (MHD) Sun: chromosphere Sun: filaments, prominences Sun: oscillations |
| DOI | 10.3847/1538-4357/aad33f |
| 英文摘要 | We present high-resolution observations of two kinds of dynamic behavior in a quiescent prominence using the New Vacuum Solar Telescope, i.e., Kelvin-Helmholtz instabilities (KHIs) and small-scale oscillations. The KHIs were identified as rapidly developed vortex-like structures with counterclockwise/clockwise rotations in the Ha red-wing images at +0.3 angstrom, which were produced by the strong shear-flow motions on the surface/interface of prominence plumes. The KHI growth rates are estimated to be similar to 0.0135 +/- 0.0004 and similar to 0.0138 +/- 0.0004. Our observational results further suggest that the shear velocities (i.e., supersonic) of the mass flows are fast enough to produce the strong deformation of the boundary and overcome the restraining surface tension force. This flowdriven instability might play a significant role in the process of plasma transfer in solar prominences. The smallscale oscillations perpendicular to the prominence threads are observed in the Ha line-center images. The oscillatory periods changed nonmonotonically and showed two changing patterns, in which one first decreased slowly and then started to increase, while the other grew fast at the beginning and then started to decrease. Both of these thread oscillations with changing periods were observed to be unstable for an entire cycle, and they were local in nature. All our findings indicate that the small-scale thread oscillations could be magnetohydrodynamic waves in the solar corona. |
| WOS关键词 | KELVIN-HELMHOLTZ INSTABILITY ; VACUUM SOLAR TELESCOPE ; HIGH-RESOLUTION ; FILAMENT ERUPTIONS ; FINE-STRUCTURES ; OSCILLATIONS ; THREADS ; WAVES ; HINODE/SOT ; MOTION |
| 资助项目 | NSFC[11603077] ; NSFC[11573072] ; NSFC[11773079] ; NSFC[11773068] ; NSFC[11790302] ; NSFC[11790300] ; NSFC[11729301] ; NSFC[11333009] ; CRP[KLSA201708] ; Youth Fund of Jiangsu[BK20161095] ; Youth Fund of Jiangsu[BK20171108] ; National Natural Science Foundation of China[U1731241] ; Strategic Priority Research Program on Space Science, CAS[XDA15052200] ; Strategic Priority Research Program on Space Science, CAS[XDA15320301] ; Youth Innovation Promotion Association of Chinese Academy of Sciences[2014047] ; Specialized Research Fund for State Key Laboratories ; ISSI-BJ |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| 出版者 | IOP PUBLISHING LTD |
| WOS记录号 | WOS:000442628400028 |
| 资助机构 | NSFC ; NSFC ; CRP ; CRP ; Youth Fund of Jiangsu ; Youth Fund of Jiangsu ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program on Space Science, CAS ; Strategic Priority Research Program on Space Science, CAS ; Youth Innovation Promotion Association of Chinese Academy of Sciences ; Youth Innovation Promotion Association of Chinese Academy of Sciences ; Specialized Research Fund for State Key Laboratories ; Specialized Research Fund for State Key Laboratories ; ISSI-BJ ; ISSI-BJ ; NSFC ; NSFC ; CRP ; CRP ; Youth Fund of Jiangsu ; Youth Fund of Jiangsu ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program on Space Science, CAS ; Strategic Priority Research Program on Space Science, CAS ; Youth Innovation Promotion Association of Chinese Academy of Sciences ; Youth Innovation Promotion Association of Chinese Academy of Sciences ; Specialized Research Fund for State Key Laboratories ; Specialized Research Fund for State Key Laboratories ; ISSI-BJ ; ISSI-BJ ; NSFC ; NSFC ; CRP ; CRP ; Youth Fund of Jiangsu ; Youth Fund of Jiangsu ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program on Space Science, CAS ; Strategic Priority Research Program on Space Science, CAS ; Youth Innovation Promotion Association of Chinese Academy of Sciences ; Youth Innovation Promotion Association of Chinese Academy of Sciences ; Specialized Research Fund for State Key Laboratories ; Specialized Research Fund for State Key Laboratories ; ISSI-BJ ; ISSI-BJ ; NSFC ; NSFC ; CRP ; CRP ; Youth Fund of Jiangsu ; Youth Fund of Jiangsu ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program on Space Science, CAS ; Strategic Priority Research Program on Space Science, CAS ; Youth Innovation Promotion Association of Chinese Academy of Sciences ; Youth Innovation Promotion Association of Chinese Academy of Sciences ; Specialized Research Fund for State Key Laboratories ; Specialized Research Fund for State Key Laboratories ; ISSI-BJ ; ISSI-BJ |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/22494]  |
| 专题 | 中国科学院国家天文台 |
| 通讯作者 | Li, Dong |
| 作者单位 | 1.Chinese Acad Sci, Purple Mt Observ, Key Lab Dark Matter & Space Astron, Nanjing 210034, Jiangsu, Peoples R China 2.Chinese Acad Sci, State Key Lab Space Weather, Beijing 100190, Peoples R China 3.Natl Astron Observ, CAS Key Lab Solar Act, Beijing 100012, Peoples R China 4.Chinese Acad Sci, Yunnan Observ, Kunming 650216, Yunnan, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Dong,Shen, Yuandeng,Ning, Zongjun,et al. Two Kinds of Dynamic Behavior in a Quiescent Prominence Observed by the NVST[J]. ASTROPHYSICAL JOURNAL,2018,863(2):11. |
| APA | Li, Dong,Shen, Yuandeng,Ning, Zongjun,Zhang, Qingmin,&Zhou, Tuanhui.(2018).Two Kinds of Dynamic Behavior in a Quiescent Prominence Observed by the NVST.ASTROPHYSICAL JOURNAL,863(2),11. |
| MLA | Li, Dong,et al."Two Kinds of Dynamic Behavior in a Quiescent Prominence Observed by the NVST".ASTROPHYSICAL JOURNAL 863.2(2018):11. |
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来源：国家天文台
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