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

Mar 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995a%26a...295..551p&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 295, no. 2, p. 551-564

Astronomy and Astrophysics

Astrophysics

9

Accretion Disks, Active Galactic Nuclei, Astronomical Models, Cataclysmic Variables, Line Spectra, Radiative Transfer, Three Dimensional Models, Velocity Distribution, Computerized Simulation, Conjugate Gradient Method, Hydrodynamics, Interpolation, Mathematical Models

Scientific paper

The 3D radiative transfer equation is written in O(v/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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