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

Xingming Chen·Ronald E. Taam·Marek A. Abramowicz·Igor V. Igumenshchev
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Abstract

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 with the tendency for the formation of a nonsteady 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 is presented.

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Xingming Chen, Ronald E. Taam, Marek A. Abramowicz, Igor V. Igumenshchev. 1996-12-13. On the morphology of accretion flows with small non-zero specific angular momentum. https://doi.org/10.1093/mnras%2F285.2.439

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