Unshifted, asymmetric Stokes V-profiles - Possible solution of a riddle
Abstract
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.
- Publication:
-
Astronomy and Astrophysics
- Pub Date:
- November 1988
- Bibcode:
- 1988A&A...206L..37G
- Keywords:
-
- Solar Atmosphere;
- Solar Magnetic Field;
- Asymmetry;
- Fourier Transformation;
- Magnetic Flux;
- Magnetohydrodynamics;
- Photosphere;
- Polarized Radiation;
- Stokes Law Of Radiation;
- Velocity Distribution;
- Solar Physics