[1] Judge P, Centeno R. On the magnetic structure of the solar transition region[J]. The Astrophysical Journal Letters, 2008, 687(2): 1388-1397.
[2] Chae J, Litvinenko Y E. Nonlinear effects in three-minute oscillations of the solar chromosphere. I. An analytical nonlinear solution and detection of the second harmonic[J]. The Astrophysical Journal Letters, 2017, 844(2): 129-137.
[3] Chae J, Park H M, Ahn K, et al. Fast imaging solar spectrograph of the 1.6 meter new solar telescope at big bear solar observatory[J]. Solar Physics, 2013, 288(1): 1-22.
[4] Collados M, Lagg A, Díaz G A J J, et al. Tenerife infrared polarimeter II[J]. ASP Conference Series, 2007, 368: 611-616.
[5] Scharmer G B, Gudiksen B V, Dan K, et al. Dark cores in sunspot penumbral filaments[J]. Nature, 2002, 420(6912): 151-153.
[6] Liu Z, Xu J, Gu B Z, et al. New vacuum solar telescope and observations with high resolution[J]. Research in Astronomy and Astrophysics, 2014, 14(6): 705-718.
[7] Fang C, Gan W Q. Dynamics of solar flare atmosphere and its spectral diagnostics[J]. Progress in Astronomy, 1989, 7(2): 81-90.
[8] Yao B X, Rao C H, Gu N T. Polarization calibration unit design of 1.8 m Chinese large solar telescope[J]. Opto-Electronic Engineering, 2018, 45(11): 12-19.
[9] Zheng L H, Gu N T, Rao C H, et al. Study on the aberration correction method of solar grating spectrometer based on adaptive optics[J]. Acta Optica Sinica, 2015, 35(8): 129-136.
[10] Zheng L H, Rao C H, Gu N T, et al. Influence of wavefront aberration on the imaging performance of the solar grating spectrometer[J]. Optics Express, 2016, 24(1): 153-159.
[11] Cao W D, Ji K F, Song Q. Model of spectral fluxes for solar spectrograph[J]. Astronomical Research & Technology, 1999, 4: 55-61.
[12] Qu Z Q, Dun G T, Chang L, et al. Spectro-imaging polarimetry of the local corona during solar eclipse[J]. Solar Physics, 2017, 292(2): 1-23.