The polarization of continuum radiation in sunspots. I - Rayleigh and Thomson scattering

Details The polarization of continuum radiation in sunspots. I - Rayleigh and Thomson scattering The polarization of continuum radiation in sunspots. I - Rayleigh and Thomson scattering

Nov 1974

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1974soph...39...91f&link_type=abstract

Solar Physics, vol. 39, Nov. 1974, p. 91-106.

Physics

4

Continuous Radiation, Polarized Electromagnetic Radiation, Rayleigh Scattering, Stokes Law Of Radiation, Sunspots, Thomson Scattering, Astronomical Models, Circular Polarization, Electron Scattering, Light Scattering

Scientific paper

Expressions are derived for the Stokes parameters of light scattered by a layer of free electrons and hydrogen atoms in a sunspot. A physically reasonable sunspot model was found so that the direction of the calculated linear polarization agrees reasonably with observations. The magnitude of the calculated values of the linear polarization agrees generally with values observed in the continuum at 5830 A. Circular polarization in the continuum also accompanies electron scattering in spot regions; however for commonly accepted values of the longitudinal magnetic field, the predicted circular polarization is much smaller than observed.

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