A NEW APPROXIMATE OPERATOR METHOD FOR PARTIAL FREQUENCY REDISTRIBUTION PROBLEMS

Authors
PALETOU F AUER LH
Citation
F. Paletou et Lh. Auer, A NEW APPROXIMATE OPERATOR METHOD FOR PARTIAL FREQUENCY REDISTRIBUTION PROBLEMS, Astronomy and astrophysics, 297(3), 1995, pp. 771-778
Citations number
22
Categorie Soggetti
Astronomy & Astrophysics
Journal title
Astronomy and astrophysics → ACNP
ISSN journal
00046361
Volume
297
Issue
3
Year of publication
1995
Pages
771 - 778
Database
ISI
SICI code
0004-6361(1995)297:3<771:ANAOMF>2.0.ZU;2-W
Abstract
Methods for the solution of non-LTE partial frequency redistribution ( PRD) radiative transfer problems are presented. By explicitly treating the partial frequency coherence, convergence difficulties caused by u sing a Complete Redistribution Approximation are completely overcome. A new core-wing treatment of the redistribution both avoids the explic it solution of the frequency coupled system, and permits the use of si mple Approximate Operator Iteration to solve PRD problems extremely ef ficiently.