NAOC Open IR
Infrared diagnostics of the solar magnetic field with Mg I 12 mu m lines: forward-model results
Li, Xin1,2; Song, Yongliang1; Uitenbroek, H.3; Yang, Xiao1; Bai, Xianyong1,2; Deng, Yuanyong1,2
2021-02-10
Source PublicationASTRONOMY & ASTROPHYSICS
ISSN0004-6361
Volume646Pages:12
AbstractContext. The Mg I 12.32 and 12.22 mu m lines are a pair of emission lines that present a great advantage for accurate solar magnetic field measurement. They potentially contribute to the diagnosis of solar atmospheric parameters through their high magnetic sensitivity.Aims. The goal of this study is to understand the radiation transfer process of these lines in detail and explore the ability of magnetic field diagnosis in the infrared.Methods. We calculated the Stokes profiles and response functions of the two Mg I 12 mu m lines based on one-dimensional solar atmospheric models using the Rybicki-Hummer (RH) radiative transfer code. The integration of these profiles with respect to the wavelength was used to generate calibration curves related to the longitudinal and transverse fields. The traditional single-wavelength calibration curve based on the weak-field approximation was also tested to determine if it is suitable for the infrared.Results. The 12.32 mu m line is more suitable for a magnetic field diagnosis because its relative emission intensity and polarization signal are stronger than that of the 12.22 mu m line. The result from the response functions illustrates that the derived magnetic field and velocity with 12.32 mu m line mainly originate from the height of 450 km, while that for the temperature is about 490 km. The calibration curves obtained by the wavelength-integrated method show a nonlinear distribution. For the Mg I 12.32 mu m line, the longitudinal (transverse) field can be effectively inferred from Stokes V/I (Q/I and U/I) in the linear range below similar to 600 G (similar to 3000 G) in quiet regions and below similar to 400 G (similar to 1200 G) in penumbrae. Within the given linear range, the method is a supplement to the magnetic field calibration when the Zeeman components are incompletely split.
Keywordline: profiles radiative transfer Sun: photosphere Sun: magnetic fields Sun: infrared
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Chinese Academy of Sciences ; Chinese Academy of Sciences
DOI10.1051/0004-6361/202039365
Language英语
Funding ProjectNational Natural Science Foundation of China[11427901] ; National Natural Science Foundation of China[11873062] ; National Natural Science Foundation of China[11803002] ; National Natural Science Foundation of China[11973056] ; National Natural Science Foundation of China[12003051] ; National Natural Science Foundation of China[12073040] ; National Natural Science Foundation of China[11773038] ; National Natural Science Foundation of China[U1731241] ; National Natural Science Foundation of China[11703042] ; Chinese Academy of Sciences[XDA15320102] ; Chinese Academy of Sciences[XDA15052200] ; Chinese Academy of Sciences[XDA15320302] ; Chinese Academy of Sciences[1916321TS00103201]
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Chinese Academy of Sciences ; Chinese Academy of Sciences
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000618770100005
PublisherEDP SCIENCES S A
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/79562
Collection中国科学院国家天文台
Corresponding AuthorBai, Xianyong
Affiliation1.Chinese Acad Sci, Natl Astron Observ, Key Lab Solar Act, 20 Datun Rd, Beijing 100101, Peoples R China
2.Univ Chinese Acad Sci, Sch Astron & Space Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China
3.Univ Colorado, Natl Solar Observ, 3665 Discovery Dr, Boulder, CO 80303 USA
Recommended Citation
GB/T 7714
Li, Xin,Song, Yongliang,Uitenbroek, H.,et al. Infrared diagnostics of the solar magnetic field with Mg I 12 mu m lines: forward-model results[J]. ASTRONOMY & ASTROPHYSICS,2021,646:12.
APA Li, Xin,Song, Yongliang,Uitenbroek, H.,Yang, Xiao,Bai, Xianyong,&Deng, Yuanyong.(2021).Infrared diagnostics of the solar magnetic field with Mg I 12 mu m lines: forward-model results.ASTRONOMY & ASTROPHYSICS,646,12.
MLA Li, Xin,et al."Infrared diagnostics of the solar magnetic field with Mg I 12 mu m lines: forward-model results".ASTRONOMY & ASTROPHYSICS 646(2021):12.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Li, Xin]'s Articles
[Song, Yongliang]'s Articles
[Uitenbroek, H.]'s Articles
Baidu academic
Similar articles in Baidu academic
[Li, Xin]'s Articles
[Song, Yongliang]'s Articles
[Uitenbroek, H.]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Li, Xin]'s Articles
[Song, Yongliang]'s Articles
[Uitenbroek, H.]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.