Astrophysical: Radiative transfer

  • Publication
    Impact of surface dynamo magnetic fields on the solar abundance of the CNO elements
    Most studies of the solar metallicity, based on abundance determinations of the CNO elements, ignore the fact that the quiet solar photosphere is significantly...
  • Publication
    Improved near optimal angular quadratures for polarised radiative transfer in 3D MHD models
    Accurate angular quadratures are crucial for the numerical solution of three-dimensional (3D) radiative transfer problems, especially when the spectral line...
  • Publication
    Influence of Thomson Electron Scattering Redistribution on Spectral Line Polarization Formed in Spherically Symmetric Extended and Expanding Atmospheres
    Scattering of line photons by ambient electrons in thermal motion in the stellar atmosphere modifies the wings of both intensity and linear polarization...
  • Publication
    Internal reddening of H II-regions and HH-objects, with special reference to NGC 896 (W3)
    The effect of scattering by dust internal to H II regions on their spectral characteristics has been studied on the basis of simple analytical models, for...
  • Publication
    Interpolation of spectra from 3D model atmospheres
    Context. The use of 3D hydrodynamical simulations of stellar surface convection for model atmospheres is computationally expensive. Although these models have...
  • Publication
    Inversion of Stokes profiles
    An inversion code of Stokes line profiles is presented. It allows the recovery of the stratification of the temperature, the magnetic field vector, and the line...
  • Publication
    Inversion of Stokes Profiles from Solar Magnetic Elements
    We describe a new LTE inversion code for the analysis of Stokes profiles emerging from unresolved magnetic elements. It has been specifically designed to obtain...
  • Publication
    Isotropic inelastic and superelastic collisional rates in a multiterm atom
    The spectral line polarization of the radiation emerging from a magnetized astrophysical plasma depends on the state of the atoms within the medium, whose...
  • Publication
    Isotropic Inelastic Collisions in a Multiterm Atom with Hyperfine Structure
    A correct modeling of the scattering polarization profiles observed in some spectral lines of diagnostic interest, the sodium doublet being one of the most...