The polarization-free (POF) approximation (Trujillo Bueno and Landi Degl'Innocenti, 1996) is capable of accounting for the approximate influence of the magnetic...
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PublicationThe Polarization-Free Approximation Applied to Multi-Level Non-LTE Radiative Transfer
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PublicationThe Potential of the Wavelength-integrated Scattering Polarization of the Hydrogen Lyα Line for Probing the Solar Chromosphere
The intensity and the linear scattering polarization profiles of the hydrogen Lyα line encode valuable information on the thermodynamic and magnetic structure...
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PublicationThe Scattering Polarization of the Lyα Lines of H I and He II Taking into Account Partial Frequency Redistribution and J-state Interference Effects
Recent theoretical investigations have pointed out that the cores of the Lyα lines of H I and He II should show measurable scattering polarization signals when...
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PublicationThe Scattering Polarization of the Sr I λ4607 Line at the Diffraction Limit Resolution of a 1 m Telescope
One of the greatest challenges in solar and stellar physics in the coming years will be to observe the second solar spectrum with a spatial resolution...
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PublicationThe Second Stellar Spectrum and the non-LTE Problem of the 2nd Kind
This paper presents an overview of the radiative transfer problem of calculating the spectral line intensity and polarization that emerges from a (generally...
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PublicationThe solar Ba{II} 4554 Å line as a Doppler diagnostic: NLTE analysis in 3D hydrodynamical model
Aims: The aim of this paper is to analyse the validity of the Dopplergram and λ-meter techniques for the Doppler diagnostics of solar photospheric velocities...
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PublicationThe Stellar Atmosphere Physical System I. Phenomenological Definition and Representation of a Stellar Atmosphere
This paper is the first in a series of two that deals with the physical and numerical grounds of stellar atmospheres modelling. After a phenomenological...
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PublicationThe Stellar Atmosphere Physical System II. An Operative Sequential Algorithm to Solve the Stellar Atmosphere Problem
In this paper, the second and the last of the series, we present a sequential algorithm to solve the stellar atmosphere problem that may serve as a paradigm for...
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PublicationThe transfer of polarized radiation in resonance lines with partial frequency redistribution, J-state interference, and arbitrary magnetic fields. A radiative transfer code and useful approximations
Aims: We present the theoretical framework and numerical methods we have implemented to solve the problem of the generation and transfer of polarized radiation...