Non-LTE polarized radiative transfer in intermediate magnetic fields: Numerical problems and results |
| |
| Authors: | V Bommier E Landi Degl'Innocenti |
| |
| Institution: | (1) Section de Meudon, Laboratoire  Atomes et Molécules en Astrophysique , CNRS URA 812 - DAMAp, Observatoire de Paris, F-92195 Meudon Cedex, France;(2) Instituto de Astrofísica de Canarias, E-38200 La Laguna, Tenerife, España |
| |
| Abstract: | This paper presents some numerical results relative to a solution, based on the density matrix formalism, of the non-LTE, polarized radiative transfer problem for a two-level atom. The results concern the atomic upper level population and alignment, and the emergent radiation Stokes profiles, for a plane-parallel, static, isothermal atmosphere embedded in a magnetic field of intermediate strength, such that the Zeeman splitting has to be taken into account in the line profile. Zeeman coherences are neglected, whereas magneto-optical effects are taken into account, resulting in a full 4×4 absorption matrix. Induced emission is neglected and complete frequency redistribution, in the rest and laboratory frames, is assumed. Pure Doppler absorption profile (gaussian shape) has also been assumed. The presentation of the results is preceded by a brief discussion of their accuracy and of the numerical difficulties that were met in the solution of the problem.On leave from the Dipartimento di Astronomia e Scienza dello Spazio, Università di Firenze, Largo E. Fermi 5, I-50125 Firenze, Italia |
| |
| Keywords: | Density Matrix Stokes Profiles Polarized Radiative Transfer Intermediate Magnetic Fields |
| 本文献已被 SpringerLink 等数据库收录！ |
|
