Bibcode
Sampoorna, M.; Trujillo-Bueno, J.
Bibliographical reference
The Astrophysical Journal, Volume 712, Issue 2, pp. 1331-1344 (2010).
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4
2010
Journal
Citations
15
Refereed citations
10
Description
The linearly polarized solar limb spectrum that is produced by
scattering processes contains a wealth of information on the physical
conditions and magnetic fields of the solar outer atmosphere, but the
modeling of many of its strongest spectral lines requires solving an
involved non-local thermodynamic equilibrium radiative transfer problem
accounting for partial redistribution (PRD) effects. Fast radiative
transfer methods for the numerical solution of PRD problems are also
needed for a proper treatment of hydrogen lines when aiming at realistic
time-dependent magnetohydrodynamic simulations of the solar
chromosphere. Here we show how the two-level atom PRD problem with and
without polarization can be solved accurately and efficiently via the
application of highly convergent iterative schemes based on the
Gauss-Seidel and successive overrelaxation (SOR) radiative transfer
methods that had been previously developed for the complete
redistribution case. Of particular interest is the Symmetric SOR method,
which allows us to reach the fully converged solution with an order of
magnitude of improvement in the total computational time with respect to
the Jacobi-based local accelerated lambda iteration method.
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Daniel Elías
Nóbrega Siverio