Open AccessOn the morphology of accretion flows with small, non-zero specific angular momentum
Author(s) -
X. Chen,
Ronald E. Taam,
M. A. Abramowicz,
I. V. Igumenshchev
Publication year - 1997
Publication title -
monthly notices of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.058
H-Index - 383
eISSN - 1365-8711
pISSN - 0035-8711
DOI - 10.1093/mnras/285.2.439
Subject(s) - physics , angular momentum , accretion (finance) , adiabatic process , specific relative angular momentum , shock wave , shock (circulatory) , plane (geometry) , bow shock (aerodynamics) , torus , flow (mathematics) , classical mechanics , astrophysics , mechanics , total angular momentum quantum number , geometry , angular momentum coupling , medicine , mathematics , thermodynamics
The morphology of adiabatic accretion flows with small non-zero specificangular momentum has been investigated in the axisymmetric and nonviscouslimit. For an initial state characterized by a Bondi flow with the specificangular momentum distributed with respect to polar angle, a travelling shockwave forms which propagates more rapidly in the equatorial plane than in theplane perpendicular to it resulting in the formation of a hot torus. In caseswhere the incoming flow is restricted to lie near the equatorial plane, astrong wind forms directed away from this plane with the tendency for theformation of a nonsteady shock structure. As the height of the incoming flow isincreased it is found that the resultant wind weakens. The parameter regimewhich delineates accretion flows characterized by a travelling shock and anearly standing shock structure is presented.Comment: MNRAS accepte
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