Effect of cross-redistribution on the resonance scattering polarization of O i line at 1302 \,
Abstract
Oxygen is the most abundant element on the Sun after Hydrogen and Helium. The intensity spectrum of resonance lines of neutral Oxygen namely O i (1302, 1305 and 1306 \,) has been studied in the literature for chromospheric diagnostics. In this paper we study the resonance scattering polarization in the O i line at 1302 \, using two-dimensional radiative transfer in a composite atmosphere constructed using a two-dimensional magneto-hydrodynamical snapshot in the photosphere and columns of the one-dimensional FALC atmosphere in the chromosphere. The methods developed by us recently in a series of papers to solve multi-dimensional polarized radiative transfer have been incorporated in our new code POLY2D which we use for our analysis. We find that multi-dimensional radiative transfer including XRD effects is important in reproducing the amplitude and shape of scattering polarization signals of the O i line at 1302 \,.
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