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Comparison of Nonlinear Force-Free Field and Potential Field in the Quiet Sun
Liu, S.; Zhang, H. Q.; Su, J. T.
2011-05-01
发表期刊SOLAR PHYSICS
卷号270期号:1页码:89-107
摘要In this paper, a potential field extrapolation and three nonlinear force-free (NLFF) field extrapolations (optimization, direct boundary integral (DBIE), and approximate vertical integration (AVI) methods) are used to study the spatial configuration of magnetic field in the quiet Sun. It is found that differences in the computed field strengths among the three NLFF and potential fields exist in the low layers. However, they tend to disappear as the height increases, and the differences are of the order of 0.1 gauss when the height exceeds approximate to 2000 km above the photosphere. The difference in azimuth angles between each NLFF field model and the potential field is as follows: for the optimization field, it decreases evidently as the height increases; for the DBIE field, it almost stays constant and shows no significant change as the height increases; for the AVI field, it increases slowly as the height increases. Our analysis shows that the reconstructed NLFF fields deviate significantly from the potential field in the quiet Sun.
关键词Chromosphere Magnetic Field Quiet Sun
DOI10.1007/s11207-011-9741-6
收录类别SCI
语种英语
WOS记录号WOS:000290447400007
引用统计
被引频次:14[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/114a11/7924
专题射电天文研究部
作者单位Chinese Acad Sci, Natl Astron Observ, Key Lab Solar Act, Beijing, Peoples R China
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Liu, S.,Zhang, H. Q.,Su, J. T.. Comparison of Nonlinear Force-Free Field and Potential Field in the Quiet Sun[J]. SOLAR PHYSICS,2011,270(1):89-107.
APA Liu, S.,Zhang, H. Q.,&Su, J. T..(2011).Comparison of Nonlinear Force-Free Field and Potential Field in the Quiet Sun.SOLAR PHYSICS,270(1),89-107.
MLA Liu, S.,et al."Comparison of Nonlinear Force-Free Field and Potential Field in the Quiet Sun".SOLAR PHYSICS 270.1(2011):89-107.
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