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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
Source PublicationSOLAR PHYSICS
Volume270Issue:1Pages:89-107
AbstractIn 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.
KeywordChromosphere Magnetic Field Quiet Sun
DOI10.1007/s11207-011-9741-6
Indexed BySCI
Language英语
WOS IDWOS:000290447400007
Citation statistics
Cited Times:14[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/7924
Collection射电天文研究部
AffiliationChinese Acad Sci, Natl Astron Observ, Key Lab Solar Act, Beijing, Peoples R China
Recommended Citation
GB/T 7714
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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