Open AccessTowards steady‐state solutions for supersonic wind accretion on to gravitating objects
Author(s) -
Pogorelov N. V.,
Ohsugi Y.,
Matsuda T.
Publication year - 2000
Publication title -
monthly notices of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.058
H-Index - 383
eISSN - 1365-2966
pISSN - 0035-8711
DOI - 10.1046/j.1365-8711.2000.03199.x
Subject(s) - physics , rotational symmetry , accretion (finance) , supersonic speed , mechanics , classical mechanics , accretion disc , plane (geometry) , computational astrophysics , astrophysics , geometry , mathematics
We discuss the results of a numerical simulation of the hydrodynamic Bondi–Hoyle accretion obtained on the basis of a high‐resolution numerical scheme with the proper entropy correction procedure necessary to avoid the ‘weak’ non‐monotonicity intrinsic in these schemes. Both the axisymmetric and plane cases are considered. The axisymmetric accretion problem turns out to have steady‐state solutions for all determining parameters. Steady‐state solutions for the plane accretion are found in certain cases even for sinusoidally perturbed and strongly non‐uniform winds. Non‐stationary phenomena do exist but they are not very violent and can sometimes be attributed as well to numerical as to physical reasons.