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FORCED FIELD EXTRAPOLATION OF THE MAGNETIC STRUCTURE OF THE Hα FIBRILS IN THE SOLAR CHROMOSPHERE
Zhu,Xiaoshuai; Wang,Huaning; Du,Zhanle; He,Han
2016-07-20
Source PublicationThe Astrophysical Journal
ISSN0004-637X
Volume826Issue:1
AbstractABSTRACT We present a careful assessment of forced field extrapolation using the Solar Dynamics Observatory/Helioseismic and Magnetic Imager magnetogram. We use several metrics to check the convergence property. The extrapolated field lines below 3600 km appear to be aligned with most of the Hα fibrils observed by the New Vacuum Solar Telescope. In the region where magnetic energy is far larger than potential energy, the field lines computed by forced field extrapolation are still consistent with the patterns of Hα fibrils while the nonlinear force-free field results show a large misalignment. The horizontal average of the lorentz force ratio shows that the forced region where the force-free assumption fails can reach heights of 1400–1800 km. The non-force-free state of the chromosphere is also confirmed based on recent radiation magnetohydrodynamics simulations.
Keywordmagnetic fields magnetohydrodynamics (MHD) methods: numerical Sun: chromosphere
DOI10.3847/0004-637X/826/1/51
Language英语
WOS IDIOP:0004-637X-826-1-51
PublisherThe American Astronomical Society
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Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/36073
Collection中国科学院国家天文台
AffiliationKey Laboratory of Solar Activity, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China; xszhu@bao.ac.cn
First Author AffilicationNational Astronomical Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Zhu,Xiaoshuai,Wang,Huaning,Du,Zhanle,et al. FORCED FIELD EXTRAPOLATION OF THE MAGNETIC STRUCTURE OF THE Hα FIBRILS IN THE SOLAR CHROMOSPHERE[J]. The Astrophysical Journal,2016,826(1).
APA Zhu,Xiaoshuai,Wang,Huaning,Du,Zhanle,&He,Han.(2016).FORCED FIELD EXTRAPOLATION OF THE MAGNETIC STRUCTURE OF THE Hα FIBRILS IN THE SOLAR CHROMOSPHERE.The Astrophysical Journal,826(1).
MLA Zhu,Xiaoshuai,et al."FORCED FIELD EXTRAPOLATION OF THE MAGNETIC STRUCTURE OF THE Hα FIBRILS IN THE SOLAR CHROMOSPHERE".The Astrophysical Journal 826.1(2016).
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