Su Jiangtao1; Bai Xianyong1; Chen Jie1; Guo Jingjing1; Liu Suo1; Wang Xiaofan1; Xu Haiqing1; Yang Xiao1; Song Yongliang1; Deng Yuanyong1; Ji Kaifan2; Deng Lei3; Huang Yu4; Li Hui4; Gan Weiqun4
Source Publicationresearchinastronomyandastrophysics
AbstractThe Full-disk vectorMagnetoGraph(FMG)instrument will carry out polarization observations at one wavelength position of the Fe I 5324.179 °A 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 positionsmay significantly reduce the wavelength shift effect(~ 75%), but simulations show that such polarization signals located at the solar limbs(e.g., beyond the longitude range of ±30?)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.
Document Type期刊论文
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GB/T 7714
Su Jiangtao,Bai Xianyong,Chen Jie,et al. datareductionandcalibrationofthefmgonboardasos[J]. researchinastronomyandastrophysics,2019,19(11).
APA Su Jiangtao.,Bai Xianyong.,Chen Jie.,Guo Jingjing.,Liu Suo.,...&Gan Weiqun.(2019).datareductionandcalibrationofthefmgonboardasos.researchinastronomyandastrophysics,19(11).
MLA Su Jiangtao,et al."datareductionandcalibrationofthefmgonboardasos".researchinastronomyandastrophysics 19.11(2019).
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