RECONSTRUCTION OF THE CORONAL MAGNETIC FIELD USING THE CESE-MHD METHOD

被引：36

作者：

Jiang, Chaowei ^{[1
,2
]}

Feng, Xueshang ^{[1
]}

Fan, Yuliang ^{[3
,4
]}

Xiang, Changqing ^{[1
]}

机构：

[1] Chinese Acad Sci, Ctr Space Sci & Appl Res, State Key Lab Space Weather, SIGMA Weather Grp, Beijing 100190, Peoples R China

[2] Chinese Acad Sci, Grad Univ, Coll Earth Sci, Beijing 100049, Peoples R China

[3] Chinese Acad Sci, Natl Astron Observ, Key Lab Solar Act, Beijing 100012, Peoples R China

[4] Chinese Acad Sci, Coll Phys, Grad Univ, Beijing 100049, Peoples R China

来源：

ASTROPHYSICAL JOURNAL | 2011年 / 727卷 / 02期

基金：

中国国家自然科学基金;

关键词：

magnetic fields; magnetohydrodynamics (MHD); methods: numerical; Sun: corona; BOUNDARY-CONDITIONS; SOLAR CORONA; SCHEME; MODEL; EXTRAPOLATION; FORMULATION; SIMULATION; ELEMENT; SPACE; CODE;

D O I：

10.1088/0004-637X/727/2/101

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present a new implementation of the MHD relaxation method for reconstruction of the nearly force-free coronal magnetic field from a photospheric vector magnetogram. A new numerical MHD scheme is proposed to solve the full MHD equations by using the spacetime conservation-element and solution-element method. The bottom boundary condition is prescribed in a similar way as in the stress-and-relax method, by changing the transverse field incrementally to match the magnetogram, and other boundaries of the computational box are set by the nonreflecting boundary conditions. Applications to the well-known benchmarks for nonlinear force-free-field reconstruction, the Low & Lou force-free equilibria, validate the method and confirm its capability for future practical application, with observed magnetograms as inputs.

引用

页数：11

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