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Radiative equilibrium in rapidly expanding shellsThe equation of radiative equilibrium for rapidly expanding spherical shells including the special relativistic terms is discussed, and a temperature-correction procedure for the solution of this equation is given. The temperature-correction scheme combines a partial linearization approach with the approximate Lambda-operator iteration method. For some test problems, the temperature structures of atmospheres in radiative equilibrium in the Lagrangian frame are calculated. The effects of the velocity field on the temperature stratification and the luminosity are also discussed. We find that the temperature structure of a moving photosphere in radiative equilibrium in the Lagrangian frame differs significantly from that of a static photosphere and that, at least, all first-order terms, in particular the advection and aberration terms, have to be included consistently both in the radiative transfer and the energy equation in studies of supernovae atmospheres and other high-speed radiating flows.
Document ID
19930026599
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Hauschildt, P. H.
(Arizona State Univ. Tempe, United States)
Date Acquired
August 15, 2013
Publication Date
October 10, 1992
Publication Information
Publication: Astrophysical Journal, Part 1
Volume: 398
Issue: 1
ISSN: 0004-637X
Subject Category
Astrophysics
Accession Number
93A10596
Distribution Limits
Public
Copyright
Other

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