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Session 60 - Multiple Stars.
Display session, Wednesday, June 12
Great Hall,

[60.15] On the morphology of accretion flows with small non-zero specific angular momentum

X. Chen, R. E. Taam (Northwestern U.), M. A. Abramowicz, I. V. Igumenshchev (Goteborg U.)

The morphology of adiabatic accretion flows with small non-zero specific angular momentum has been investigated in the axisymmetric and nonviscous limit. For an initial state characterized by a Bondi flow with the specific angular momentum distributed with respect to polar angle, a travelling shock wave forms which propagates more rapidly in the equatorial plane than in the plane perpendicular to it resulting in the formation of a hot torus. In cases where the incoming flow is restricted to lie near the equatorial plane, a strong wind forms directed away from this plane. In contrast with flows not restricted to equatorial plane, there is a tendency for the formation of a quasi-steady shock structure. As the height of the incoming flow is increased it is found that the resultant wind weakens. The parameter regime which delineates accretion flows characterized by a travelling shock and a nearly standing shock structure are presented.

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