Astronomy and Astrophysics – Astronomy
Scientific paper
May 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011apj...733....4s&link_type=abstract
The Astrophysical Journal, Volume 733, Issue 1, article id. 4 (2011).
Astronomy and Astrophysics
Astronomy
5
Atomic Processes, Line: Profiles, Magnetic Fields, Polarization, Scattering, Sun: Atmosphere
Scientific paper
Quantum interference phenomena play a fundamental role in astrophysical spectra that are formed by coherent scattering processes. Here we derive a partial frequency redistribution (PRD) matrix that includes J-state interference in the presence of magnetic fields of arbitrary strength. The paper focuses on PRD in the collisionless regime, which in the traditional PRD terminology is referred to as Hummer's type-II scattering. By limiting the treatment to the linear Zeeman regime, for which the Zeeman splitting is much smaller than the fine-structure splitting, it is possible to formulate analytical expressions for the PRD matrices. In the special case of non-magnetic scattering we recover the redistribution matrix derived from an independent quantum electrodynamic formulation based on the metalevel theory.
Nagendra K. N.
Sampoorna M.
Smitha H. N.
Stenflo Jan Olof
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