Three-Dimensional Nonlinear Force-Free Field Reconstruction of Solar Active Region 11158 by Direct Boundary Integral Equation

	Three-Dimensional Nonlinear Force-Free Field Reconstruction of Solar Active Region 11158 by Direct Boundary Integral Equation
	Wang, Rui; Yan, Yihua; Tan, Baolin
刊名	SOLAR PHYSICS
	2013-12-01
卷号	288 期号:2 页码:507-529
关键词	Magnetic fields, corona Magnetic fields, extrapolation Solar active regions
英文摘要	A three-dimensional coronal magnetic field is reconstructed for the NOAA active region 11158 on 14 February 2011. A GPU-accelerated direct boundary integral equation (DBIE) method is implemented which is approximately 1000 times faster than the original DBIE used on solar non-linear force-free field modeling. Using the SDO/HMI vector magnetogram as the bottom boundary condition, the reconstructed magnetic field lines are compared with the projected EUV loop structures as observed in the front-view (SDO/AIA) and the side-view (STEREO-A/B) images for the first time; they show very good agreement three-dimensionally. A quantitative comparison with some stereoscopically reconstructed coronal loops shows that the average misalignment angles in our model are at the same order as the state-of-the-art results obtained from reconstructed coronal loops. It is found that the observed coronal loop structures can be grouped into a number of closed and open field structures with some central bright coronal loop features around the polarity inversion line. The reconstructed highly sheared magnetic field lines agree very well with the low-lying sigmoidal filament along the polarity inversion line. This central low-lying magnetic field loop system must have played a key role in powering the flare. It should be noted that while a strand-like coronal feature along the polarity inversion line may be related to the filament, one cannot simply interpret all the coronal bright features along the polarity inversion line as manifestation of the filament without any stereoscopic information.
收录类别	SCI
语种	英语
WOS记录号	WOS:000326813900004
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/5827]
专题	国家天文台_太阳物理研究部
作者单位	Chinese Acad Sci, Natl Astron Observ, Key Lab Solar Act, Beijing 100012, Peoples R China
推荐引用方式 GB/T 7714	Wang, Rui,Yan, Yihua,Tan, Baolin. Three-Dimensional Nonlinear Force-Free Field Reconstruction of Solar Active Region 11158 by Direct Boundary Integral Equation[J]. SOLAR PHYSICS,2013,288(2):507-529.
APA	Wang, Rui,Yan, Yihua,&Tan, Baolin.(2013).Three-Dimensional Nonlinear Force-Free Field Reconstruction of Solar Active Region 11158 by Direct Boundary Integral Equation.SOLAR PHYSICS,288(2),507-529.
MLA	Wang, Rui,et al."Three-Dimensional Nonlinear Force-Free Field Reconstruction of Solar Active Region 11158 by Direct Boundary Integral Equation".SOLAR PHYSICS 288.2(2013):507-529.