Statistics – Computation
Scientific paper
Dec 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991mnras.253..633l&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 253, Dec. 15, 1991, p. 633-636. Research supported by T
Statistics
Computation
28
Black Holes (Astronomy), Computational Astrophysics, Neutron Stars, Stellar Mass Accretion, X Ray Binaries, Accretion Disks, Angular Momentum, Hydrodynamic Equations, Massive Stars, Stellar Oscillations
Scientific paper
A simple physical interpretation is advanced by means of an analysis of the shock cone in the accretion flows past a compact object and with an examination of the accretion-line stability analyses. The stability of the conical shock is examined against small angular deflections with attention given to several simplifying assumptions. A line instability is identified in the Bondi-Hoyle accretion flows that leads to the formation of a large opening-angle shock. When the opening angle becomes large the instability becomes irregular oscillation. The analytical methodology is compared to previous numerical configurations that demonstrate different shock morphologies. The Bondi-Hoyle accretion onto a compact object is concluded to generate a range of nonlinear instabilities in both homogeneous and inhomogeneous cases with a quasiperiodic oscillation in the linear regime.
Anzer Ulrich
Livio Mario
Matsuda Takuya
Soker Noam
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