4 papers
Application of the coherent structure tracking to solar Doppler maps to determine horizontal velocity fields at the Sun's surface
M. Sampoorna, T. Roudier, F. Paletou
Coherent Structure Tracking (CST) is a technique for determining the solar surface horizontal flows at high spatial and temporal resolution by tracking the proper motion of granule…
Full non-LTE multi-level radiative transfer II. The case of a 5-level Ca ii atom with broadened excited levels
T. Lagache, M. Sampoorna, F. Paletou
The so-called full non-local thermodynamic equilibrium (FNLTE) radiative transfer problem allows us to take into account not only deviations of the radiation field from the Plancki…
Full non-LTE multi-level radiative transfer I. An atom with three bound infinitely sharp levels
Tristan Lagache, Frédéric Paletou, Malali Sampoorna
The standard nonlocal thermodynamic equilibrium (non-LTE) multi-level radiative transfer problem only takes into account the deviation of the radiation field and atomic populations…
Full non-LTE spectral line formation III. The case of a two-level atom with broadened upper level
M. Sampoorna, F. Paletou, V. Bommier +1
In the present paper we consider the full nonlocal thermodynamic equilibrium (non-LTE) radiation transfer problem. This formalism allows us to account for deviation from equilibriu…