Statistics – Computation
Scientific paper
Feb 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991mnras.248..754p&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 248, Feb. 15, 1991, p. 754-759.
Statistics
Computation
100
Accretion Disks, Binary Stars, Angular Momentum, Computational Astrophysics, Green'S Functions, Nonlinear Equations
Scientific paper
The properties of external accretion disks (disks with a central source of angular momentum) are explored both analytically and numerically. An illustrative example of the effect of a disk of material around a binary star on the stellar separation is considered. A Greens-function-type solution is considered in which an initial ring of matter is put in orbit around the central binary. It is found that the solution splits temporally into three parts. First, the disk evolves as a standard accretion disk unaware of the inner boundary condition. Secondly, the disk interacts with the inner boundary and changes its character to become, thirdly, an outflowing disk which is propelled outwards by the source of angular momentum at the center.
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