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DRIVING MECHANISM AND ONSET CONDITION OF A CONFINED ERUPTION
文献类型：期刊论文
| 作者 | Guo, Y.1,2,3; Ding, M. D.1,2; Schmieder, B.3; Li, H.4 ; Toeroek, T.3,5; Wiegelmann, T.6
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| 刊名 | ASTROPHYSICAL JOURNAL LETTERS
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| 出版日期 | 2010-12-10 |
| 卷号 | 725期号:1页码:L38-L42 |
| 关键词 | Sun: corona Sun: filaments, prominences Sun: flares |
| ISSN号 | 2041-8205 |
| 产权排序 | 产权排序 |
| 合作状况 | 填入合作性质等 |
| 中文摘要 | 摘要description |
| 英文摘要 | We study a confined eruption accompanied by an M1.1 flare in solar active region (AR) NOAA 10767 on 2005 May 27, where a pre-eruptive magnetic flux rope was reported in a nonlinear force-free field (NLFFF) extrapolation. The observations show a strong writhing motion of the erupting structure, suggesting that a flux rope was indeed present and converted some of its twist into writhe in the course of the eruption. Using the NLFFF extrapolation, we calculate the twist of the pre-eruptive flux rope and find that it is in very good agreement with thresholds of the helical kink instability found in numerical simulations. We conclude that the activation and rise of the flux rope were triggered and driven by the instability. Using a potential field extrapolation, we also estimate the height distribution of the decay index of the external magnetic field in the AR 1 hr prior to the eruption. We find that the decay index stays below the threshold for the torus instability for a significant height range above the erupting flux rope. This provides a possible explanation for the confinement of the eruption to the low corona. |
| 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 MASS EJECTIONS ; UNSTABLE FLUX ROPES ; MAGNETIC-FIELD ; SOLAR-FLARES ; KINK ; PROMINENCES ; FILAMENT ; INSTABILITIES ; ACCELERATION ; SIGMOIDS |
| 收录类别 | SCI |
| 资助信息 | 国科图 |
| 语种 | 英语 |
| WOS记录号 | WOS:000284575400009 |
| 公开日期 | 2011-11-23 |
| 源URL | [http://159.226.72.40/handle/332002/1109]  |
| 专题 | 紫金山天文台_星系中的恒星形成研究团组 |
| 作者单位 | 1.Nanjing Univ, Dept Astron, Nanjing 210093, Peoples R China 2.Nanjing Univ, Minist Educ, Key Lab Modern Astron & Astrophys, Nanjing 210093, Peoples R China 3.Univ Paris Diderot, UPMC, CNRS, LESIA,Observ Paris, F-92190 Meudon, France 4.Acad Sinica, Purple Mt Observ, Nanjing 210008, Peoples R China 5.Predict Sci Inc, San Diego, CA 92121 USA 6.Max Planck Inst Sonnensyst Forsch, D-37191 Katlenburg Lindau, Germany |
| 推荐引用方式 GB/T 7714 | Guo, Y.,Ding, M. D.,Schmieder, B.,et al. DRIVING MECHANISM AND ONSET CONDITION OF A CONFINED ERUPTION[J]. ASTROPHYSICAL JOURNAL LETTERS,2010,725(1):L38-L42. |
| APA | Guo, Y.,Ding, M. D.,Schmieder, B.,Li, H.,Toeroek, T.,&Wiegelmann, T..(2010).DRIVING MECHANISM AND ONSET CONDITION OF A CONFINED ERUPTION.ASTROPHYSICAL JOURNAL LETTERS,725(1),L38-L42. |
| MLA | Guo, Y.,et al."DRIVING MECHANISM AND ONSET CONDITION OF A CONFINED ERUPTION".ASTROPHYSICAL JOURNAL LETTERS 725.1(2010):L38-L42. |
入库方式： OAI收割
来源：紫金山天文台
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