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1 results

  • Multidimensional and inhomogeneity effects on scattering polarization in solar prominences

  • Ivan Milić, Marianne Faurobert
  • Journal:
    Proceedings of the International Astronomical Union / Volume 8 / Issue S300 / June 2013
    Published online by Cambridge University Press:
    06 January 2014, pp. 453-455
    Print publication:
    June 2013
    • Article
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  • Measurements of magnetic fields in solar prominences via Hanle effect usually assume either single scattering approximation or simple, one-dimensional, slab model in order to perform an inversion and find the unknown magnitude and the orientation of the magnetic field from spectropolarimetric observations. Here we perform self-consistent NLTE modeling of scattering polarization in inhomogeneous 2D slab, illuminated from its sides by the solar continuum radiation. We show that even in the absence of a magnetic field, in the non-optically thin regime, significant non-zero Stokes U is to be expected. Neglecting these effects, in principle, could cause systematic errors in spectropolarimetric inversions, in the case when the prominence is optically thick.