Influence of the height and surface magnetic field inhomogeneity on the Stokes parameters of the magnetically sensitive Fe I line λ525.02 nm

Details Influence of the height and surface magnetic field inhomogeneity on the Stokes parameters of the magnetically sensitive Fe I line λ525.02 nm Influence of the height and surface magnetic field inhomogeneity on the Stokes parameters of the magnetically sensitive Fe I line λ525.02 nm

May 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995kfnt...11d..60l&link_type=abstract

Kinematika i Fizika Nebesnykh Tel, vol.11, no.4, p. 60-70.

Physics

Sun: Photosphere, Sun: Magnetic Fields, Spectral Line: Profiles

Scientific paper

On the basis of the Stokes parameters calculations for the Holweger-Muller model atmosphere, the Fe I λ 525.02 nm line sensitivity to some types of the height and surface magnetic field inhomogeneity has been investigated. It has been shown that for the height gradient of 0.4 mT/km, which is characteristic of some theoretical flux tube models the noticeable V-parameter peak asymmetry appears, which is the most considerable when a pure longitudinal magnetic field and a low macroturbulent velocity are the case. There is the analogous effect in Q-profiles for non-longitudinal fields. The Fe I λ 525.02 nm line is sensitive to the subtelescopic fields of the mixed polarity like those discovered by Stenflo (1993) from observations in IR lines. The assumption is argued that due to the Wilson depression in the small-scale flux tubes, the strong field areas with heliocentric angles larger than 60-65° are not visible because of their screening by surroundings with weaker magnetic fields.

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