Polarized line formation by resonance scattering: Lorentz profile

Details Polarized line formation by resonance scattering: Lorentz profile Polarized line formation by resonance scattering: Lorentz profile

Apr 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007ap.....50..157l&link_type=abstract

Astrophysics, Volume 50, Issue 2, pp.157-174

Astronomy and Astrophysics

Astrophysics

1

Radiative Transfer, Polarization, Spectral Lines

Scientific paper

Multiple resonance scattering of spectral line radiation is examined in atmospheres with uniformly distributed sources of unpolarized radiation. It is assumed that the profile of the absorption coefficient is lorentzian and that scattering involves complete frequency redistribution. The polarization characteristics of the emerging radiation are determined by iterative solution of a nonlinear Ambartsumyan-Chandrasekhar matrix integral equation. In particular, it is found that for pure scattering the maximum polarization at the limb of the disk is 5.421%. The polarization characteristics of the emerging radiation are compared for three different absorption profiles: Lorentz, Doppler, and rectangular (monochromatic radiation).

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