Fast multilevel radiative transfer
نویسندگان
چکیده
The vast majority of recent advances in the field of numerical radiative transfer relies on approximate operator methods better known in astrophysics as Accelerated Lambda-Iteration (ALI). A superior class of iterative schemes, in term of rates of convergence, such as Gauss-Seidel and Successive Overrelaxation methods were therefore quite naturally introduced in the field of radiative transfer by Trujillo Bueno & Fabiani Bendicho[1]; it was thoroughly described for the non–LTE two-level atom case. We describe hereafter in details how such methods can be generalized when dealing with non–LTE unpolarised radiation transfer with multilevel atomic models, in monodimensional geometry.
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