Correlation analysis between vector magnetograms measured by S3T and MSFC

Details Correlation analysis between vector magnetograms measured by S3T and MSFC Correlation analysis between vector magnetograms measured by S3T and MSFC

Aug 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007newa...12..497l&link_type=abstract

New Astronomy, Volume 12, Issue 6, p. 497-506.

Astronomy and Astrophysics

Astronomy

Atomic And Molecular Data, Spectra, And Spectral Parameters, Electric And Magnetic Fields, Solar Magnetism, Radiation Mechanisms, Polarization

Scientific paper

By quantitative analysis of AR NOAA10484 two-dimensional Stokes spectra obtained from the Solar Stokes Spectral Telescope (S3T) at the Yunnan Observatory, we have derived three components, the flux intensity B, the inclination γ and the azimuth χ of the vector magnetic fields in the AR. The contours of the flux intensity B have a basic agreement to the morphological configuration of the sunspot group in white-light. Comparing the vector magnetograms obtained by S3T and by the NASA/Marshall Space Flight Center (MSFC), basic agreement on the longitudinal and transverse components between the S3T and MSFC magnetograms is found, resulting in correlation coefficients ρ=0.904, ρBt = 0.749 and ρaz = 0.941. There is a split of 241 mÅ between the two σ lines of Fe I 6302.5 Å which implies the field flux intensity near the center of the west umbra is 2600 G. This value is consistent with the result obtained by fitting the Stokes profiles.

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