Full non-LTE spectral line formation - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Astronomy and Astrophysics - A&A Année : 2023

Full non-LTE spectral line formation

Résumé

In this article we discuss a method for obtaining a numerical solution to the so-called full nonlocal thermodynamic equilibrium (non-LTE) radiation transfer problem. More specifically, the usual numerical iterative methods for non-LTE radiation transfer are coupled with that formalism and new numerical additions are explained in detail. We benchmarked the whole process with the standard non-LTE transfer problem for a two-level atom with Hummer’s R I − A partial frequency redistribution function. Finally, we present new quantities, such as the spatial distribution of the velocity distribution function of excited atoms, which can only be accessed by adopting a more general frame for non-LTE radiation transfer, such as the one we propose here.
Fichier principal
Vignette du fichier
aa44908-22.pdf (395.76 Ko) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-04037542 , version 1 (20-03-2023)

Licence

Paternité - Pas d'utilisation commerciale

Identifiants

Citer

Frederic Paletou, M. Sampoorna, C. Peymirat. Full non-LTE spectral line formation: II. Two-distribution radiation transfer with coherent scattering in the atom’s frame. Astronomy and Astrophysics - A&A, 2023, 671, pp.A93. ⟨10.1051/0004-6361/202244908⟩. ⟨hal-04037542⟩
18 Consultations
15 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More