Three-dimensional Radiative Transfer with Multilevel Atoms

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dc.creatorBendicho, P. Fabiani
dc.creatorBueno, J. Trujillo
dc.date2007-10-29
dc.date.accessioned2026-07-07T08:39:13Z
dc.date.available2026-07-07T08:39:13Z
dc.descriptionThe efficient numerical solution of Non-LTE multilevel transfer problems requires the combination of highly convergent iterative schemes with fast and accurate formal solution methods of the radiative transfer (RT) equation. This contribution begins presenting a method for the formal solution of the RT equation in three-dimensional (3D) media with horizontal periodic boundary conditions. This formal solver is suitable for both, unpolarized and polarized 3D radiative transfer and it can be easily combined with the iterative schemes for solving non-LTE multilevel transfer problems that we have developed over the last few years. We demonstrate this by showing some schematic 3D multilevel calculations that illustrate the physical effects of horizontal radiative transfer. These Non-LTE calculations have been carried out with our code MUGA 3D, a 3D multilevel Non-LTE code based on the Gauss-Seidel iterative scheme that Trujillo Bueno and Fabiani Bendicho (1995) developed for RT applications.
dc.description12 pages and 6 figures
dc.identifierhttps://arxiv.org/abs/0710.5427
dc.identifierhttp://arxiv.org/abs/0710.5427
dc.identifierPublished in 1999 in the book Solar Polarization, edited by K.N. Nagendra and J.O. Stenflo. Kluwer Academic Publishers, 1999. (Astrophysics and Space Science Library ; Vol. 243), p. 219-230
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/140998
dc.subjectAstrophysics
dc.titleThree-dimensional Radiative Transfer with Multilevel Atoms
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