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Study on Two Methods for Nonlinear Force-Free Extrapolation Based on Semi-Analytical Field
Liu, S.1; Zhang, H. Q.1; Su, J. T.1; Song, M. T.2
2011-03-01
发表期刊SOLAR PHYSICS
卷号269期号:1页码:41-57
摘要In this paper, two semi-analytical solutions of force-free fields (Low and Lou, Astrophys. J. 352, 343, 1990) have been used to test two nonlinear force-free extrapolation methods. One is the boundary integral equation (BIE) method developed by Yan and Sakurai (Solar Phys. 195, 89, 2000), and the other is the approximate vertical integration (AVI) method developed by Song et al. (Astrophys. J. 649, 1084, 2006). Some improvements have been made to the AVI method to avoid the singular points in the process of calculation. It is found that the correlation coefficients between the first semi-analytical field and extrapolated field using the BIE method, and also that obtained by the improved AVI method, are greater than 90% below a height 10 of the 64 x 64 lower boundary. For the second semi-analytical field, these correlation coefficients are greater than 80% below the same relative height. Although differences between the semi-analytical solutions and the extrapolated fields exist for both the BIE and AVI methods, these two methods can give reliable results for heights of about 15% of the extent of the lower boundary.
关键词Active Regions Magnetic Fields Photosphere
DOI10.1007/s11207-010-9691-4
收录类别SCI
语种英语
WOS记录号WOS:000288626700003
引用统计
被引频次:11[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/114a11/7922
专题太阳物理研究部
作者单位1.Chinese Acad Sci, Natl Astron Observ, Key Lab Solar Act, Beijing, Peoples R China
2.Chinese Acad Sci, Purple Mt Observ, Nanjing, Peoples R China
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GB/T 7714
Liu, S.,Zhang, H. Q.,Su, J. T.,et al. Study on Two Methods for Nonlinear Force-Free Extrapolation Based on Semi-Analytical Field[J]. SOLAR PHYSICS,2011,269(1):41-57.
APA Liu, S.,Zhang, H. Q.,Su, J. T.,&Song, M. T..(2011).Study on Two Methods for Nonlinear Force-Free Extrapolation Based on Semi-Analytical Field.SOLAR PHYSICS,269(1),41-57.
MLA Liu, S.,et al."Study on Two Methods for Nonlinear Force-Free Extrapolation Based on Semi-Analytical Field".SOLAR PHYSICS 269.1(2011):41-57.
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