A fresh look at the unstable simulations of Bondi-Hoyle-Lyttleton accretion
A fresh look at the unstable simulations of Bondi-Hoyle-Lyttleton accretion
The instability of Bondi-Hoyle-Lyttleton accretion, observed in numerical simulations, is analyzed through known physical mechanisms and possible numerical artefacts. The mechanisms of the longitudinal and transverse instabilities, established within the accretion line model, are clarified. They cannot account for the instability of BHL accretion at moderate Mach number when the …