Détail du document
Identifiant
oai:arXiv.org:2411.03040
Sujet
Astrophysics - Instrumentation and...Auteur
Ceulemans, Thomas De Ceuster, Frederik Decin, Leen Yates, JeremyCatégorie
sciences : astrophysique
Année
2024
Date de référencement
13/11/2024
Mots clés
softwareRésumé
Spectral line observations are an indispensable tool to remotely probe the physical and chemical conditions throughout the universe.
Modelling their behaviour is a computational challenge that requires dedicated software.
In this paper, we present the first long-term stable release of Magritte, an open-source software library for line radiative transfer.
First, we establish its necessity with two applications.
Then, we introduce the overall design strategy and the application/programmer interface (API).
Finally, we present three key improvements over previous versions: (1) an improved re-meshing algorithm to efficiently coarsen the spatial discretisation of a model; (2) a variation on Ng-acceleration, a popular acceleration-of-convergence method for non-LTE line transfer; and, (3) a semi-analytic approximation for line optical depths in the presence of large velocity gradients.
;Comment: 12 pages, 9 figures
Ceulemans, Thomas,De Ceuster, Frederik,Decin, Leen,Yates, Jeremy, 2024, Magritte, a modern software library for spectral line radiative transfer
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