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Data reduction and calibration of the FMG onboard ASO-S
Su, Jiang-Tao1,2; Bai, Xian-Yong1,2; Chen, Jie1; Guo, Jing-Jing1; Liu, Suo1; Wang, Xiao-Fan1; Xu, Hai-Qing1; Yang, Xiao1; Song, Yong-Liang1; Deng, Yuan-Yong1,2; Ji, Kai-Fan3; Deng, Lei4; Huang, Yu5; Li, Hui5; Gan, Wei-Qun5
2019-11-01
Source PublicationRESEARCH IN ASTRONOMY AND ASTROPHYSICS
ISSN1674-4527
Volume19Issue:11Pages:16
Corresponding AuthorBai, Xian-Yong(xybai@bao.ac.cn)
AbstractThe Full-disk vector MagnetoGraph (FMG) instrument will carry out polarization observations at one wavelength position of the Fe I 5324.179 angstrom spectral line. This paper describes how to choose this single wavelength position, the relevant data-processing and the magnetic field calibrations based on the measured polarization signals at one single wavelength position. It is found that solar radial Doppler velocity, which can cause the spectral line to shift, is a disadvantageous factor for the linear calibration at one wavelength position. Observations at two symmetric wavelength positions may significantly reduce the wavelength shift effect (similar to 75%), but simulations show that such polarization signals located at the solar limbs (e.g., beyond the longitude range of +/- 30 degrees) are not free from the effect completely. In future work, we plan to apply machine learning techniques to calibrate vector magnetic fields, or employ full Stokes parameter profile inversion techniques to obtain accurate vector magnetic fields, in order to complement the linear calibration at the single wavelength position.
KeywordSun: photosphere Sun: magnetic fields Sun: calibration
DOI10.1088/1674-4527/19/11/161
WOS KeywordVECTOR MAGNETIC-FIELDS ; FARADAY-ROTATION ; MAGNETOGRAPH ; TELESCOPE ; AMBIGUITY ; REGION ; SPACE ; TESTS
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000507468400007
PublisherNATL ASTRONOMICAL OBSERVATORIES, CHIN ACAD SCIENCES
Citation statistics
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/35553
Collection中国科学院紫金山天文台
Corresponding AuthorBai, Xian-Yong
Affiliation1.Chinese Acad Sci, Natl Astron Observ, Key Lab Solar Act, Beijing 100101, Peoples R China
2.Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Yunnan Observ, Kunming 650216, Yunnan, Peoples R China
4.Chinese Acad Sci, Innovat Acad Microsatellites, Shanghai 201203, Peoples R China
5.Chinese Acad Sci, Purple Mt Observ, Key Lab Dark Matter & Space Astron, Nanjing 210008, Peoples R China
Recommended Citation
GB/T 7714
Su, Jiang-Tao,Bai, Xian-Yong,Chen, Jie,et al. Data reduction and calibration of the FMG onboard ASO-S[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2019,19(11):16.
APA Su, Jiang-Tao.,Bai, Xian-Yong.,Chen, Jie.,Guo, Jing-Jing.,Liu, Suo.,...&Gan, Wei-Qun.(2019).Data reduction and calibration of the FMG onboard ASO-S.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,19(11),16.
MLA Su, Jiang-Tao,et al."Data reduction and calibration of the FMG onboard ASO-S".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 19.11(2019):16.
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