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Radiative transfer in an expanding spherical medium

  • W. Kalkofen
  • R. Wehrse
5. Post-Main Sequence Stars
Part of the Lecture Notes in Physics book series (LNP, volume 193)

Abstract

We describe a method for solving the transfer equation of a spectral line in statistical equilibrium with a background continuum; the atmosphere may be static or expanding and have plane or spherical symmetry. The method permits the rapid and accurate solution of line transfer problems in media with given gross structure. The basic approach is to separate the calculation into two parts: the accurate determination of the error with which an assumed, or an iterated, solution satisfies the conservation equations of statistical equilibrium; and the calculation of corrections by means of an approximate operator. The method combines differential as well as integral equations.

Keywords

Integral Operator Conservation Equation Radiative Transfer Integrate Intensity Transfer Equation 
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References

  1. Auer, L. H., 1976. J. Quant. Spear. Rad. Transf., 16, 931.CrossRefGoogle Scholar
  2. — 1983. Methods in Radiative Transfer, W. Kalkofen, editor; Cambridge University Press, Chapter 9.Google Scholar
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  4. — 1983. Methods in Radiative Transfer, Chapter 6.Google Scholar
  5. — Kalkofen, W., 1983. Methods in Radiative Transfer, Chapter 15.Google Scholar
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  11. Wehrse, R. & Kalkofen, W., 1984, in preparation.Google Scholar

Copyright information

© Springer-Verlag 1984

Authors and Affiliations

  • W. Kalkofen
    • 1
  • R. Wehrse
    • 2
  1. 1.Harvard-Smithsonian Center for AstrophysicsHarvardUSA
  2. 2.Institut für Theoretische Astrophysik der Universität HeidelbergHeidelbergUSA

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