The diffusion of contaminant through an accretion disc

Details The diffusion of contaminant through an accretion disc The diffusion of contaminant through an accretion disc

Nov 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988mnras.235..365c&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 235, Nov. 15, 1988, p. 365-373.

Statistics

Computation

15

Accretion Disks, Computational Astrophysics, Angular Momentum, Chemical Evolution, Density Distribution, Diffusion, Radial Flow, Time Dependence, Trace Contaminants, Viscosity

Scientific paper

The authors calculate the manner in which a trace contaminant diffuses through an accretion disc. For a steady disc in which the ratio of diffusivity to viscosity, ζ, is taken to be constant through the disc and for which the surface density distribution is taken to be a power law (Σ ∝ R-α) the authors present analytic solutions to the time-dependent equations governing contaminant evolution. They calculate the amount of contaminant which can diffuse its way outwards against the bulk inward accretion flow and show that this is a sensitive function of α and ζ.

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