Correlation analysis between ST and SFT/MTK vector magnetograms

Details Correlation analysis between ST and SFT/MTK vector magnetograms Correlation analysis between ST and SFT/MTK vector magnetograms

Jul 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008adspr..42...96l&link_type=abstract

Advances in Space Research, Volume 42, Issue 1, p. 96-102.

Computer Science

Scientific paper

Three components of the vector magnetic field, flux density B, inclination γ and azimuth χ of the active region NOAA10507 are derived from the two-dimensional Stokes spectral data obtained by the ST 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 ST and the SFT/MTK, it is found that there is basic agreement on the longitudinal fields of ST and SFT/MTK magnetograms with a correlation coefficient ρ=0.842, and the two distributions of transverse magnetic field obtained by ST and SFT/MTK have correlation coefficients, ρ=0.423 and ρ=0.72.

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