EVIDENCE FOR A PRE-ERUPTIVE TWISTED FLUX ROPE USING THE THEMIS VECTOR MAGNETOGRAPH
文献类型：期刊论文
| 作者 | Canou, A.1; Amari, T.1; Bommier, V.2; Schmieder, B.3; Aulanier, G.3; Li, H.4
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| 刊名 | ASTROPHYSICAL JOURNAL LETTERS
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| 出版日期 | 2009-03-01 |
| 卷号 | 693期号:1页码:L27-L30 |
| 关键词 | MHD Sun: corona Sun: magnetic fields |
| 英文摘要 | Although there is evidence that twisted structures form during large-scale eruptive events, it is not yet clear whether these exist in the pre-eruptive phase as twisted flux ropes (TFRs) in equilibrium. This question has become a major issue since several theoretical mechanisms can lead to the formation of TFRs. These models consider either the evolution of a coronal configuration driven by photospheric changes or the emergence of TFR from the convection zone. We consider as a target for addressing this issue the active region NOAA AR 10808 known at the origin of several large-scale eruptive phenomena, and associated with the emergence of a delta-spot. Using the THEMIS vector magnetogram as photospheric boundary conditions for our nonlinear force-free reconstruction model of the low corona and without any other assumption, we show that the resulting preeruptive configuration exhibits a TFR above the neutral line of the emerging delta-spot. In addition, the free magnetic energy of this configuration could even be large enough to explain such resulting large-scale eruptive events. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 学科主题 | Astronomy & Astrophysics |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | CORONAL MAGNETIC-FIELD ; ACTIVE-REGION ; SOLAR ATMOSPHERE ; MASS EJECTIONS ; EMERGENCE ; TUBE ; EVOLUTION ; FILAMENT ; FLARE ; MODEL |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000263382600007 |
| 公开日期 | 2011-12-08 |
| 源URL | [http://159.226.72.40/handle/332002/1505]  |
| 专题 | 紫金山天文台_太阳高能及相关物理过程研究团组 |
| 作者单位 | 1.Ecole Polytech, CNRS, Ctr Phys Theor, F-91128 Palaiseau, France 2.Observ Paris, LERMA, F-92190 Meudon, France 3.Observ Paris, LESIA, F-92190 Meudon, France 4.Acad Sinica, Purple Mt Observ, Nanjing 210008, Peoples R China |
| 推荐引用方式 GB/T 7714 | Canou, A.,Amari, T.,Bommier, V.,et al. EVIDENCE FOR A PRE-ERUPTIVE TWISTED FLUX ROPE USING THE THEMIS VECTOR MAGNETOGRAPH[J]. ASTROPHYSICAL JOURNAL LETTERS,2009,693(1):L27-L30. |
| APA | Canou, A.,Amari, T.,Bommier, V.,Schmieder, B.,Aulanier, G.,&Li, H..(2009).EVIDENCE FOR A PRE-ERUPTIVE TWISTED FLUX ROPE USING THE THEMIS VECTOR MAGNETOGRAPH.ASTROPHYSICAL JOURNAL LETTERS,693(1),L27-L30. |
| MLA | Canou, A.,et al."EVIDENCE FOR A PRE-ERUPTIVE TWISTED FLUX ROPE USING THE THEMIS VECTOR MAGNETOGRAPH".ASTROPHYSICAL JOURNAL LETTERS 693.1(2009):L27-L30. |
入库方式： OAI收割
来源：紫金山天文台
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