Astronomy and Astrophysics – Astrophysics
Scientific paper
Nov 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988a%26a...206l..37g&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 206, no. 2, Nov. 1988, p. L37-L39.
Astronomy and Astrophysics
Astrophysics
72
Solar Atmosphere, Solar Magnetic Field, Asymmetry, Fourier Transformation, Magnetic Flux, Magnetohydrodynamics, Photosphere, Polarized Radiation, Stokes Law Of Radiation, Velocity Distribution
Scientific paper
We show that Stokes V-profiles originating in an atmosphere in which a magnetic field and a systematic velocity field are spatially separated along the line of sight are asymmetric with unshifted zero-crossings. Such a configuration is probably realized in the peripheral parts of magnetic flux concentrations in the solar photosphere: Since the magnetic field flares out with height, the line of sight traverses both a static magnetic region and a downdraft in the non-magnetic surroundings. V-profiles formed in these parts of the flux concentation will be strongly asymmetric but unshifted while the V-profiles from the central parts are symmetric and unshifted. The resulting mean V-profiles show the characteristics of the observed profiles, i.e. they are unshifted and asymmetric.
Grossmann-Doerth Ulrich
Schuessler Manfred
Solanki Sami K.
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