Eclipse on the Coral Sea: Cycle 24 Ascending | |
The state of nonlinear force-free magnetic field extrapolation | |
物理学;天文学 | |
Wheatland, M.S.^1 ; Gilchrist, S.A.^1 | |
Sydney Institute for Astronomy, School of Physics, University of Sydney, NSW 2006, Australia^1 | |
关键词: Active regions; Boundary data; Computational task; Coronal magnetic fields; Magnetic field extrapolations; Model solution; Nonlinear force; Present status; | |
Others : https://iopscience.iop.org/article/10.1088/1742-6596/440/1/012037/pdf DOI : 10.1088/1742-6596/440/1/012037 |
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学科分类:天文学(综合) | |
来源: IOP | |
【 摘 要 】
Magnetic field extrapolation is the construction of a model solution for the coronal magnetic field in active regions from magnetic boundary data originating close to the Sun's surface. The nonlinear force-free model (in which the electric current density is parallel to the magnetic field) is often adopted to describe the coronal field. The solution of the nonlinear force-free equations is a challenging computational task, and the application of codes to available boundary data has revealed a number of significant problems with nonlinear force-free extrapolation. This paper summarises the present status of coronal field extrapolation, and describes some recent developments.
【 预 览 】
Files | Size | Format | View |
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The state of nonlinear force-free magnetic field extrapolation | 833KB | download |