Line formation in accretion disks

Details Line formation in accretion disks Line formation in accretion disks

Dec 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990a%26a...240..541a&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 240, no. 2, Dec. 1990, p. 541-550.

Astronomy and Astrophysics

Astrophysics

23

Accretion Disks, Finite Volume Method, Line Spectra, Radiative Transfer, Stellar Atmospheres, Active Galaxies, Atomic Energy Levels, Cataclysmic Variables, Doppler Effect, Light Scattering, Stark Effect

Scientific paper

A finite volume method is applied to the three-dimensional radiative line transfer in accretion disks. The two-level-atom approximation with complete redistribution is used. It is assumed that the disks are homogeneous in temperature and pressure. Monochromatic images of the intensity distribution on the surface of disks are given for several assumptions on the scattering and the disk thickness. In the LTE case, earlier results are confirmed. However, for scattering conditions a rather different intensity pattern is obtained. In a parameter study for geometrically thin and thick disks, obtain in a variety of line profile shapes is obtained.

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