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A new method of identifying 3D null points in solar vector magnetic fields
Zhao, H; Wang, JX; Zhang, J; Xiao, CJ
2005
发表期刊CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS
卷号5期号:5页码:443-447
摘要Employing the Poincare index of isolated null-points in a vector field, we worked out a mathematical method of searching for 3D null-points in coronal magnetic fields. After introducing the relevant differential topology, we test the method by using the analytical model of Brown & Priest. The location of null-point identified by our method coincides precisely with the analytical solution. Finally we apply the method to the 3D coronal magnetic fields reconstructed from an observed MDI magnetogram of a super-active region (NOAA 10488). We find that the 3D null-point seems to be a key element in the magnetic topology associated with flare occurrence.
关键词Sun : Flares Sun : Corona Sun : Magnetic Fields
收录类别SCI
语种英语
WOS记录号WOS:000232872000001
引用统计
被引频次:18[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.bao.ac.cn/handle/114a11/8957
专题太阳物理研究部
作者单位Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
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GB/T 7714
Zhao, H,Wang, JX,Zhang, J,et al. A new method of identifying 3D null points in solar vector magnetic fields[J]. CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS,2005,5(5):443-447.
APA Zhao, H,Wang, JX,Zhang, J,&Xiao, CJ.(2005).A new method of identifying 3D null points in solar vector magnetic fields.CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS,5(5),443-447.
MLA Zhao, H,et al."A new method of identifying 3D null points in solar vector magnetic fields".CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS 5.5(2005):443-447.
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