Line formation in accretion disks. 3D comoving frame calculations

Details Line formation in accretion disks. 3D comoving frame calculations Line formation in accretion disks. 3D comoving frame calculations

Oct 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994stin...9672001p&link_type=abstract

Technical Report, Heidelberg Univ. Heidelberg, Germany Inst. für Theoretische Astrophysik

Other

Accretion Disks, Radiative Transfer, Line Spectra, Active Galactic Nuclei, Cataclysmic Variables, Three Dimensional Models, Mathematical Models, Velocity Distribution, Convergence, Method Of Characteristics

Scientific paper

The 3D radiative transfer equation is written in O(nu/c) in the comoving frame and solved by a short characteristics method for a two-level atom with complete redistribution. An Approximate-LAMBDA operator and various other acceleration techniques are applied to improve the rate of convergence. Line profiles and source functions are calculated for accretion disk models of cataclysmic variables (CV) and active galactic nuclei (AGN) homogeneous in density and temperature. We find that the velocity gradient in the disks makes it necessary for line transfer problems to use the full 3D radiative transfer equation.

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