Variations of the 3-D coronal magnetic field associated with the X3.4-class solar flare event of AR 10930
文献类型：期刊论文
| 作者 | He, Han1,2 ; Wang, Huaning1; Yan, Yihua1; Chen, P. F.2,3; Fang, Cheng2,3
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| 刊名 | JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
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| 出版日期 | 2014-05-01 |
| 卷号 | 119期号:5页码:3286-3315 |
| 关键词 | coronal magnetic field magnetic connectivity flare initial eruption AR 10930 NLFFF model magnetic reconnection |
| 英文摘要 | The variations of the 3-D coronal magnetic fields associated with the X3.4-class flare of active region 10930 are studied in this paper. The coronal magnetic field data are reconstructed from the photospheric vector magnetograms obtained by the Hinode satellite and using the nonlinear force-free field extrapolation method developed in our previous work (He et al., 2011). The 3-D force-free factor , 3-D current density, and 3-D magnetic energy density are employed to analyze the coronal data. The distributions of and current density reveal a prominent magnetic connectivity with strong negative values and strong current density before the flare. This magnetic connectivity extends along the main polarity inversion line and is found to be totally broken after the flare. The distribution variation of magnetic energy density reveals the redistribution of magnetic energy before and after the flare. In the lower space of the modeling volume the increase of magnetic energy dominates, and in the higher space the decrease of energy dominates. The comparison with the flare onset imaging observation exhibits that the breaking site of the magnetic connectivity and site with the highest values of energy density increase coincide with the location of flare initial eruption. We conclude that a cramped positive region appearing in the photosphere causes the breaking of the magnetic connectivity. A scenario for flare initial eruption is proposed in which the Lorentz force acting on the isolated electric current at the magnetic connectivity breaking site lifts the associated plasmas and causes the initial ejection. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000337622100007 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/6543]  |
| 专题 | 国家天文台_太阳物理研究部 |
| 作者单位 | 1.Chinese Acad Sci, Natl Astron Observ, Key Lab Solar Act, Beijing, Peoples R China 2.Nanjing Univ, Minist Educ, Key Lab Modern Astron & Astrophys, Nanjing 210008, Jiangsu, Peoples R China 3.Nanjing Univ, Dept Astron, Nanjing 210008, Jiangsu, Peoples R China |
| 推荐引用方式 GB/T 7714 | He, Han,Wang, Huaning,Yan, Yihua,et al. Variations of the 3-D coronal magnetic field associated with the X3.4-class solar flare event of AR 10930[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,2014,119(5):3286-3315. |
| APA | He, Han,Wang, Huaning,Yan, Yihua,Chen, P. F.,&Fang, Cheng.(2014).Variations of the 3-D coronal magnetic field associated with the X3.4-class solar flare event of AR 10930.JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,119(5),3286-3315. |
| MLA | He, Han,et al."Variations of the 3-D coronal magnetic field associated with the X3.4-class solar flare event of AR 10930".JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 119.5(2014):3286-3315. |
入库方式： OAI收割
来源：国家天文台
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