Registration and imaging polarimetry of the Fe 6374 angstrom red coronal line during the 2017 total solar eclipse
文献类型:期刊论文
作者 | Liang Y(梁昱)1,2; Qu ZQ(屈中权)1,2; Chen, Y. J.3; Zhong Y(钟悦)2; Song ZM(宋智明)2; Li SY(李少英)2 |
刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY |
出版日期 | 2021-06-01 |
卷号 | 503期号:4页码:5715-5729 |
ISSN号 | 0035-8711 |
关键词 | techniques: polarimetric techniques: image processing Sun: corona Sun: magnetic fields |
DOI | 10.1093/mnras/stab463 |
产权排序 | 第2完成单位 |
文献子类 | Article |
英文摘要 | Strict registration is critical for imaging polarimetry; a highly accurate registration approach to the coronal image and imaging polarimetry of the Fe 6374 angstrom red coronal line have been researched in this paper. In order to improve the registration accuracy, this paper proposes the idea of image enhancement based on blind deconvolution combined with noise-adaptive fuzzy equalization algorithms. After image enhancement, the cross-correlation registration algorithm achieves better results. To diagnose a low-temperature corona, the polarization brightness of the red coronal line data and the Mauna Loa Solar Observatory (MLSO)/KCor data are compared to study the structural features and polarization information of the inner corona. We found that the polarization brightness radiation of the red coronal line has overall features similar to that of the MLSO/KCor data, but it has more detailed features, such as the cavity, polar plume, and interplume characteristics. Active regions, polar plumes, and interplumes show similar performance in red coronal line intensity, polarization brightness, degree of linear polarization, K-corona, and electron density along with the radial height. An interesting finding is that the polarization brightness of the red coronal line changes drastically along with the radial height across the cavity above the solar west limb, while neither the K-corona nor the electron density changes obviously. This seems to be a piece of possible evidence indicating that the red coronal line is not unpolarized in the cavity region. |
学科主题 | 天文学 ; 太阳与太阳系 ; 太阳物理学 |
URL标识 | 查看原文 |
出版地 | GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND |
WOS关键词 | MAGNETIC-FIELD ; ELECTRON-DENSITY ; POLARIZATION ; DYNAMICS ; OUTFLOW ; HOLE |
资助项目 | National Natural Science Foundation of China[12003066] ; National Natural Science Foundation of China[11527804] ; National Natural Science Foundation of China[U1931206] ; Scientific Research Equipment Development Project of the Chinese Academy of Sciences[YJKYYQ20180056] |
WOS研究方向 | Astronomy & Astrophysics |
语种 | 英语 |
出版者 | OXFORD UNIV PRESS |
WOS记录号 | WOS:000649001600073 |
资助机构 | National Natural Science Foundation of China[12003066, 11527804, U1931206] ; Scientific Research Equipment Development Project of the Chinese Academy of Sciences[YJKYYQ20180056] |
源URL | [http://ir.ynao.ac.cn/handle/114a53/24383] |
专题 | 云南天文台_光纤阵列太阳光学望远镜研究组 |
通讯作者 | Liang Y(梁昱) |
作者单位 | 1.University of Chinese Academy of Sciences, Beijing 100049, China 2.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650011, China 3.School of Earth and Space Sciences, Peking University, Beijing 100871, China |
推荐引用方式 GB/T 7714 | Liang Y,Qu ZQ,Chen, Y. J.,et al. Registration and imaging polarimetry of the Fe 6374 angstrom red coronal line during the 2017 total solar eclipse[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2021,503(4):5715-5729. |
APA | Liang Y,Qu ZQ,Chen, Y. J.,Zhong Y,Song ZM,&Li SY.(2021).Registration and imaging polarimetry of the Fe 6374 angstrom red coronal line during the 2017 total solar eclipse.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,503(4),5715-5729. |
MLA | Liang Y,et al."Registration and imaging polarimetry of the Fe 6374 angstrom red coronal line during the 2017 total solar eclipse".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 503.4(2021):5715-5729. |
入库方式: OAI收割
来源:云南天文台
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