Data Analysis with Imaging Vector Magnetograph (IVM)

Details Data Analysis with Imaging Vector Magnetograph (IVM) Data Analysis with Imaging Vector Magnetograph (IVM)

May 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...210.2407l&link_type=abstract

American Astronomical Society Meeting 210, #24.07; Bulletin of the American Astronomical Society, Vol. 39, p.129

Astronomy and Astrophysics

Astronomy

Scientific paper

We discuss a practical data procedure by choosing the best quality of data sets taken by Imaging Vector Magnetograph (IVM) at Mees Solar Observatory. We point out that three quantities which cannot be removed by the regular IVM data reduction, affect the quality of the data. They are seeing condition, air mass and the wavelength shifts probably due to the change of Fabry-Perot's transparent plate. The first two quantities are known, and have been discussed before. The third quantity results in the distortion of the spectral line profiles that further affects the magnetic field derived from fitting all line profiles in four Stokes parameters. The best quality of data sets are chosen by avoiding the worst of all three quantities. The IVM data can be used to construct non-linear force free field models of the solar atmosphere. Initial results from this work will be presented.

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