Correlation analysis between image and SFT/MTK vector magnetograms Original Research Article

Three components of the vector magnetic field, flux density B, inclination image and azimuth image of the active region NOAA10507 are derived from the two-dimensional Stokes spectral data obtained by the image at the Yunnan Observatory. The distributions of the longitudinal magnetic field and the transverse magnetic field are contoured on the basis of the three components. The distributions indicate that the active region is a very complicated sunspot group which is mainly composed of five sunspots, including one of negative polarity and four positive ones. Comparing the vector magnetograms obtained by image and the SFT/MTK, it is found that there is basic agreement on the longitudinal fields of image and SFT/MTK magnetograms with a correlation coefficient image, and the two distributions of transverse magnetic field obtained by image and SFT/MTK have correlation coefficients, image and image.