Ja. Font et Jm. Ibanez, A NUMERICAL STUDY OF RELATIVISTIC BONDI-HOYLE ACCRETION ONTO A MOVINGBLACK-HOLE - AXISYMMETRICAL COMPUTATIONS IN A SCHWARZSCHILD BACKGROUND, The Astrophysical journal, 494(1), 1998, pp. 297-316
A fully relativistic numerical study of nonspherical Bondi-Hoyle accre
tion onto a Schwarzschild black hole is presented. The simulations are
performed in axisymmetry with a high-resolution shock-capturing numer
ical scheme that makes use of a linearized Riemann solver as a key ing
redient to handle shock waves. A broad family of initial flow paramete
rs is considered. The main differences among the accretion patterns of
the different models is discussed. A detailed comparative study with
a previous relativistic simulation is performed. The results of this s
tudy reveal a qualitative agreement in the morphology and dynamics of
the flow. However, there are important discrepancies concerning quanti
tative results as the mass accretion rates. All models evolved numeric
ally in this paper relax to a final steady state accretion pattern, an
d, as the simulations are performed in axisymmetry, no evidence of any
kind of instabilities (e.g., flip-flop) is present.