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

Xingming Chen*, Ronald E. Taam, Marek A. Abramowicz, Igor V. Igumenshchev

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

15 Scopus citations

Abstract

The morphology of adiabatic accretion flows with small non-zero specific angular momentum has been investigated in the axisymmetric and non-viscous 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 non-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 is presented.

Original languageEnglish (US)
Pages (from-to)439-448
Number of pages10
JournalMonthly Notices of the Royal Astronomical Society
Volume285
Issue number2
DOIs
StatePublished - 1997

Keywords

  • Accretion, accretion discs
  • Hydrodynamics
  • Methods: numerical

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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