Statistics – Computation
Scientific paper
Feb 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993a%26a...268..641l&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 268, no. 2, p. 641-649.
Statistics
Computation
18
Computational Astrophysics, Hydrodynamic Equations, Solar Wind, Stellar Models, Stellar Winds, Two Dimensional Models, Acoustic Velocity, Density Distribution, Mach Number, Magnetohydrodynamics, Radial Velocity
Scientific paper
. A new family of solutions of the system of steady hydrodynamic equations describing the axisymmetric outflow originating from a rotating central object, surrounded by a compressible, non-polytropic and inviscid fluid, is deduced. The system is solved self-consistently without any explicit assumption on the form of the velocity field and density; the solutions result purely from the assumed set of equations, the boundary conditions and the assumption of separation of variables. The analysis gives three dimensionless parameters that control the degree of collimation of the outflow as well as the anisotropy of the density distribution. The solution reproduces in a natural way the presence of jets around the polar axis and of disks around the equator that are observed in many astrophysical objects.
Lima J. J. G.
Priest Eric R.
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