Physics
Scientific paper
Aug 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994soph..153..115d&link_type=abstract
Solar Physics (ISSN 0038-0938), vol. 153, no. 1-2, p. 115-129
Physics
1
Iron, Line Shape, Line Spectra, Magnetic Field Configurations, Solar Magnetic Field, Solar Spectra, Sun, Variations, Calcium, Charge Coupled Devices, H Alpha Line, Magnetic Signatures, Photometers, Solar Observatories, Spectrographs, Telescopes
Scientific paper
This paper examines the question of the influence of the lambda 525.02 nm Fe I line profile (slope of its wings) variations over the solar disk upon observations of large-scale magnetic fields (LSMF) made in this line. The study has shown that depending on the position on the disk (`center-limb' effect) and magnetic field parameters at the place of the observation, values of magnetic field strengths determined with proper account of the real line profile and in the usual way (by calibration using the line profile at the center of the solar disk only) can differ by 25% or more, which is of crucial importance. Observations at the Solar Telescope for Operative Predictions (STOP) of the Sayan Observatory have been used to accomplish this work.
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