Quantum interference with angle-dependent partial frequency redistribution: solution of the polarized line transfer in the non-magnetic case

Angle-dependent partial frequency redistribution (PRD) matrices represent the physical redistribution in the process of light scattering on atoms. For the purpose of numerical simplicity, it is a common practice in astrophysical literature to use the angle-averaged versions of these matrices, in the...

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Bibliographic Details
Published inMonthly notices of the Royal Astronomical Society Vol. 429; no. 1; pp. 275 - 280
Main Authors Supriya, H. D., Smitha, H. N., Nagendra, K. N., Ravindra, B., Sampoorna, M.
Format Journal Article
LanguageEnglish
Published London Oxford University Press 11.02.2013
Subjects
Astrophysics
Frequency distribution
Quantum physics
Scattering
Sun: atmosphere
polarization
line: formation
scattering
methods: numerical
radiative transfer
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Summary:Angle-dependent partial frequency redistribution (PRD) matrices represent the physical redistribution in the process of light scattering on atoms. For the purpose of numerical simplicity, it is a common practice in astrophysical literature to use the angle-averaged versions of these matrices, in the line transfer computations. The aim of this paper is to study the combined effects of angle-dependent PRD and the quantum interference phenomena arising either between the fine structure (J) states of a two-term atom or between the hyperfine structure (F) states of a two-level atom. We restrict our attention to the case of non-magnetic and collisionless line scattering on atoms. A rapid method of solution based on Neumann series expansion is developed to solve the angle-dependent PRD problem including quantum interference in an atomic system. We discuss the differences that occur in the Stokes profiles when angle-dependent PRD mechanism is taken into account.
ISSN:0035-8711
1365-2966
DOI:10.1093/mnras/sts335