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Properties of the boundary integral equation for solar non-constant-alpha force-free magnetic fields
Li, ZH; Yan, YH; Song, GX
2004-02-01
发表期刊MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
卷号347期号:4页码:1255-1265
摘要A boundary integral equation representation for the non-constant-force-free field in space outside the Sun was investigated by Yan &Sakurai, who introduced a local parameter instead of the force-free factor which should satisfy a proposed condition. Then the field at any point in space can be represented by the boundary integral equation, which is determined by the field and its normal derivative over the boundary. In the present paper, it is justified that, for a closed-form non-constant- force-free field problem with finite energy content in free space around the Sun, as in Low & Lou, such real solutions do exist. Using numerical integration, it is found that the values that satisfy the condition at some point are not unique. However, this non-uniqueness of the solutions does not influence the computation of the field at that location, as demonstrated by numerical results. This is remarkable because the new parameter has a local property at each position. Therefore, the calculation of at one point has no influence on that of at another point. The distributions of B-x, B-y and B-z have the same symmetrical or antisymmetrical features as B-x, B-y and B-z, respectively. These properties of the boundary integral equation for a non-constant- force-free field will promote the application of the integral technique for practical solar magnetic field problems.
关键词Mhd Sun : Atmosphere Sun : Corona Sun : Magnetic Fields
收录类别SCI
语种英语
WOS记录号WOS:000188305300025
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文献类型期刊论文
条目标识符http://ir.bao.ac.cn/handle/114a11/8110
专题太阳物理研究部
作者单位1.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
2.Xidian Univ, Dept Appl Math, Xian 710071, Peoples R China
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GB/T 7714
Li, ZH,Yan, YH,Song, GX. Properties of the boundary integral equation for solar non-constant-alpha force-free magnetic fields[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2004,347(4):1255-1265.
APA Li, ZH,Yan, YH,&Song, GX.(2004).Properties of the boundary integral equation for solar non-constant-alpha force-free magnetic fields.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,347(4),1255-1265.
MLA Li, ZH,et al."Properties of the boundary integral equation for solar non-constant-alpha force-free magnetic fields".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 347.4(2004):1255-1265.
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