SLIPPING MAGNETIC RECONNECTION OF FLUX-ROPE STRUCTURES AS A PRECURSOR TO AN ERUPTIVE X-CLASS SOLAR FLARE
文献类型：期刊论文
| 作者 | Li, Ting1,2 ; Yang, Kai3,4; Hou, Yijun1,2; Zhang, Jun1,2; Zhang,Jun; Li,Ting
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| 刊名 | ASTROPHYSICAL JOURNAL
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| 出版日期 | 2016-10-20 |
| 卷号 | 830期号:2 |
| 关键词 | magnetic reconnection Sun: flares Sun: transition region Sun: UV radiation |
| 英文摘要 | We present the quasi-periodic slipping motion of flux-rope structures prior to the onset of an eruptive X-class flare on 2015 March 11, obtained by the Interface Region Imaging Spectrograph and the Solar Dynamics Observatory. The slipping motion occurred at the north part of the flux rope and seemed to successively peel off the flux rope. The speed of the slippage was 30-40 km s(-1), with an average period of 130 +/- 30 s. The Si IV lambda 1402.77 line showed a redshift of 10-30 km s(-1) and a line width of 50-120 km s(-1) at the west legs of slipping structures, indicative of reconnection downflow. The slipping motion lasted about 40 minutes, and the flux rope started to rise up slowly at the late stage of the slippage. Then an X2.1 flare was initiated, and the flux rope was impulsively accelerated. One of the flare ribbons swept across a negative-polarity sunspot, and the penumbral segments of the sunspot decayed rapidly after the flare. We studied the magnetic topology at the flaring region, and the results showed the existence of a twisted flux rope, together with quasi-separatrix layer (QSL) structures binding the flux rope. Our observations imply that quasi-periodic slipping magnetic reconnection occurs along the flux-rope-related QSLs in the preflare stage, which drives the later eruption of the flux rope and the associated flare. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | REGION-IMAGING-SPECTROGRAPH ; QUASI-SEPARATRIX LAYERS ; DYNAMICS-OBSERVATORY SDO ; CORONAL MASS EJECTIONS ; ACTIVE-REGION ; CHROMOSPHERIC EVAPORATION ; RUNNING RECONNECTION ; NULL POINTS ; FILAMENT ; TOPOLOGY |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000386583400004 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/6877]  |
| 专题 | 国家天文台_太阳物理研究部 |
| 作者单位 | 1.Chinese Acad Sci, Key Lab Solar Act, Natl Astron Observ, Beijing 100012, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Nanjing Univ, Sch Astron & Space Sci, Nanjing 210023, Jiangsu, Peoples R China 4.Nanjing Univ, Minist Educ, Key Lab Modern Astron & Astrophys, Nanjing 210023, Jiangsu, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Ting,Yang, Kai,Hou, Yijun,et al. SLIPPING MAGNETIC RECONNECTION OF FLUX-ROPE STRUCTURES AS A PRECURSOR TO AN ERUPTIVE X-CLASS SOLAR FLARE[J]. ASTROPHYSICAL JOURNAL,2016,830(2). |
| APA | Li, Ting,Yang, Kai,Hou, Yijun,Zhang, Jun,Zhang,Jun,&Li,Ting.(2016).SLIPPING MAGNETIC RECONNECTION OF FLUX-ROPE STRUCTURES AS A PRECURSOR TO AN ERUPTIVE X-CLASS SOLAR FLARE.ASTROPHYSICAL JOURNAL,830(2). |
| MLA | Li, Ting,et al."SLIPPING MAGNETIC RECONNECTION OF FLUX-ROPE STRUCTURES AS A PRECURSOR TO AN ERUPTIVE X-CLASS SOLAR FLARE".ASTROPHYSICAL JOURNAL 830.2(2016). |
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来源：国家天文台
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