Astronomy and Astrophysics – Astrophysics
Scientific paper
2007-10-29
Published in 1999 in the book Solar Polarization, edited by K.N. Nagendra and J.O. Stenflo. Kluwer Academic Publishers, 1999.
Astronomy and Astrophysics
Astrophysics
14 pages and 5 figures
Scientific paper
This paper addresses the problem of scattering line polarization and the Hanle effect in one-dimensional (1D), two-dimensional (2D) and three-dimensional (3D) media for the case of a two-level model atom without lower-level polarization and assuming complete frequency redistribution. The theoretical framework chosen for its formulation is the QED theory of Landi Degl'Innocenti (1983), which specifies the excitation state of the atoms in terms of the irreducible tensor components of the atomic density matrix. The self-consistent values of these density-matrix elements is to be determined by solving jointly the kinetic and radiative transfer equations for the Stokes parameters. We show how to achieve this by generalizing to Non-LTE polarization transfer the Jacobi-based ALI method of Olson et al. (1986) and the iterative schemes based on Gauss-Seidel iteration of Trujillo Bueno and Fabiani Bendicho (1995). These methods essentially maintain the simplicity of the Lambda-iteration method, but their convergence rate is extremely high. Finally, some 1D and 2D model calculations are presented that illustrate the effect of horizontal atmospheric inhomogeneities on magnetic and non-magnetic resonance line polarization signals.
Manso Sainz Rafael
Trujillo Bueno Javier
No associations
LandOfFree
The Hanle Effect in 1D, 2D and 3D does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The Hanle Effect in 1D, 2D and 3D, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Hanle Effect in 1D, 2D and 3D will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-19270