[Title] Comparison of the Coronal Green-line Intensities with the EUV Measurements from SDO/AIA

• Impact Factor:2.8
• DOI number:10.1088/1674-4527/ac712e
• Teaching and Research Group:天体物理
• Journal:Research in Astronomy and Astrophysics
• Key Words:Sun: corona;Sun: magnetic fields;stars: coronae
• Abstract:The intensity of the green line (Fe XIV 5303 Å) is the strongest in the visible spectrum of the solar corona and has long been used as a powerful diagnostic tool for coronal configurations and plasma dynamics. Using coronal green-line data from the Lijiang YOGIS Lyot coronagraph together with EUV observations from the Solar Dynamics Observatory/Atmospheric Imaging Assembly,this study performs direct comparisons of intensity distributions for different coronal structures. Two algorithms are developed to extract features in the low corona. The results show that,among the EUV wavelengths analyzed,the intensity correlation between the green line and the 211 Å channel is consistently the strongest for different structures and limb locations,with correlation coefficients ranging from 0.89 to 0.99. This finding provides a promising way to link ground-based coronal green-line observations with space-based EUV measurements.
• Co-author:Liu Y,Zhao MY,Liu JH,Elmhamdi A,Song TF,Li ZH,Li HB,Sha FY,Wang JX,Li XB,Shen YD,Liu SQ,Liang HF,Al-Shammari RM
• First Author:Zhang XF
• Document Code:035
• Discipline:Science
• First-Level Discipline:Astronomy
• Volume:22
• Issue:7
• Page Number:id.075012, 15 pp.
• ISSN No.:1674-4527
• Translation or Not:no
• Date of Publication:2022-07-14