Hostname: page-component-cd9895bd7-p9bg8 Total loading time: 0 Render date: 2024-12-27T11:34:16.291Z Has data issue: false hasContentIssue false
  • English
  • Français

RADIATIVE QUANTITIES FOR HYDRODYNAMICS

Published online by Cambridge University Press:  25 September 2002

Ph. Stee ,
R. Wehrse  and
B. Baschek
R. Wehrse
Affiliation:
Institut f. Theoret. Astrophysik, Tiergartenstr. 15, 69121 Heidelberg, Germany
B. Baschek
Affiliation:
W. v. Waldenfels, Institut f. Angewandte Mathematik, Im Neuenheimer Feld 294, 69120 Heidelberg, Germany
Get access

Abstract

Convenient and accurate expressions for the radiative flux deep inside an arbitrarily shaped, differentially moving, optically thick medium are derived. Spectral lines are included either ina deterministic way or stochastically by assuming a Poisson point process. It is shown that the lines lead to decreasing fluxes when in the medium the absolute value of the velocity gradient is increased. The flux vector needs no longer to be parallel to the temperature gradient in contrast to the radiative acceleration, which to a very good approximation is not influenced by lines. Formulae for the corresponding mean values of the opacity are presented and discussed.

Type
Research Article
Information
European Astronomical Society Publications Series , Volume 5: Radiative Transfer and Hydrodynamics in Astrophysics , 2002 , pp. 1
Copyright
© EAS, EDP Sciences, 2002

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)