Radiative transfer in the broad emission line regions of quasi-stellar objects
Journal Article
·
· Astrophys. J.; (United States)
The accuracy of the simplifying approximations usually made to avoid solving in detail the equations of radiative transfer from broad emission line regions of quasi-stellar objects is examined. Starting with a pure hydrogen model, the effects are considered of including heavy-element cooling, helium and X-ray opacity, X-ray heating, Lyman continuum transfer replacing on-the-spot approximation, and line transfer with Lyman-alpha partial redistribution replacing escape probabilities. The hydrogen statistical equilibrium equations are solved in detail. 40 references.
- Research Organization:
- Harvard-Smithsonian Center for Astrophysics, Cambridge, MA (USA)
- OSTI ID:
- 6744049
- Journal Information:
- Astrophys. J.; (United States), Journal Name: Astrophys. J.; (United States) Vol. 331; ISSN ASJOA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
640102* -- Astrophysics & Cosmology-- Stars & Quasi-Stellar
Radio & X-Ray Sources
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
COOLING
COSMIC GASES
COSMIC RADIO SOURCES
ELECTROMAGNETIC RADIATION
ELEMENTS
EMISSION SPECTRA
FLUIDS
GASES
HYDROGEN
IONIZING RADIATIONS
MATHEMATICAL MODELS
NONMETALS
QUASARS
RADIATION TRANSPORT
RADIATIONS
SPECTRA
X RADIATION
Radio & X-Ray Sources
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
COOLING
COSMIC GASES
COSMIC RADIO SOURCES
ELECTROMAGNETIC RADIATION
ELEMENTS
EMISSION SPECTRA
FLUIDS
GASES
HYDROGEN
IONIZING RADIATIONS
MATHEMATICAL MODELS
NONMETALS
QUASARS
RADIATION TRANSPORT
RADIATIONS
SPECTRA
X RADIATION