Astrofísicas: Transferencia radiativa

  • Publicación
    Iterative Methods for the Non-LTE Transfer of Polarized Radiation: Resonance Line Polarization in One-dimensional Atmospheres
    This paper shows how to generalize to non-LTE polarization transfer some operator splitting methods that were originally developed for solving unpolarized...
  • Noticia
    JO PULS: “Uno de los retos de los modelos de transporte radiativo es la evolución de los sistemas binarios masivos”
    Su interés por el transporte radiativo surgió a raíz de un congreso sobre atmósferas estelares al que asistió cuando aún cursaba sus estudios en Física...
  • Publicación
    Lagrangian and Eulerian Stratifications of Acoustic Oscillations through the Solar Photosphere
    We evaluate the stratification of acoustic oscillations in the solar photosphere in both the Lagrangian (comoving) frame of reference and the Eulerian (inertial...
  • Publicación
    Line Asymmetries and the Microstructure of Photospheric Magnetic Fields
    A systematic structuring of magnetic fields over scales much smaller than the mean free path of photospheric photons may be responsible for the observed...
  • Publicación
    Line formation in solar granulation. I. Fe line shapes, shifts and asymmetries
    Realistic ab-initio 3D, radiative-hydrodynamical convection simulations of the solar granulation have been applied to Fe i and Fe ii line formation. In contrast...
  • Publicación
    Linear Polarization due to Lower Level Depopulation Pumping in Stellar Atmospheres
    The possible generation of linear polarization in spectral lines due to depopulation-pumping processes in stellar atmospheres is investigated within the...
  • Publicación
    Linearization versus Preconditioning: Which Approach Is Best for Solving Multilevel Transfer Problems?
    We present a critical analysis of linearization and preconditioning, the two most used approaches proposed for achieving the required linearity in the iterative...
  • Publicación
    Long Characteristics versus Short Characteristics in 3D Radiative Transfer Simulations of Polarized Radiation
    We compare maps of scattering polarization signals obtained from three-dimensional (3D) radiation transfer calculations in a magnetoconvection model of the...
  • Publicación
    Magnetic field diagnostics of prominences with the Mg II k line 3D Stokes inversions versus traditional methods
    The Mg II k resonance line is commonly used for diagnosing the solar chromosphere. We theoretically investigated its intensity and polarization in solar...