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学科：天体物理. 空间物理学. 等离子体物理
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[Title] On the Relation Between Coronal Green Line Brightness and Magnetic Fields Intensity
影响因子：2.8
DOI码：10.1088/1674-4527/ac6fb8
教研室：天体物理
发表刊物：Research in Astronomy and Astrophysics
关键字：Sun: magnetic fields;Sun: corona;Stars: coronae;Sun: activity;Sun: atmosphere;Sun: coronal mass ejections (CMEs);Sun: fundamental parameters;Sun: heliosphere;Sun: UV radiation
摘要：Two-dimensional solar coronal magnetic fields are difficult to be measured directly. Using coronal green-line (Fe XIV 5303 Å) images obtained by the Yunnan Observatories Green-line Imaging System (YOGIS) of the 10 cm Lijiang coronagraph and coronal magnetic field maps extrapolated from SDO/HMI magnetograms with the PFSS model,this work investigates the relationship between coronal green-line brightness and magnetic field intensity. Coronal loop structures are identified and two-dimensional magnetic field intensity maps in the plane of the sky are constructed. Correlation coefficients between coronal brightness and magnetic field intensity are derived at different heights. The results show that the correlation reaches a maximum value of about 0.82 near 1.1 solar radii,corresponding to the tops of closed coronal loops,indicating a close relationship between green-line emission and coronal magnetic fields.
合写作者：Liu Y,Zhao MY,Song TF,Wang JX,Li XB,Li ZH
第一作者：Zhang XF
论文编号：036
学科门类：理学
一级学科：天文学
卷号：22
期号：7
页面范围：id.075007, 11 pp.
ISSN号：1674-4527
是否译文：否
发表时间：2022-07-14