Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985mnras.216..971w&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 216, Oct. 15, 1985, p. 971-985. SERC-supported research
Astronomy and Astrophysics
Astronomy
42
Cosmic Plasma, Extragalactic Radio Sources, Plasma Jets, Supersonic Jet Flow, Astronomical Models, Axisymmetric Flow, Elliptical Galaxies, Mach Number, Pressure Distribution, Shock Waves
Scientific paper
The behavior of jets propagating through a medium having spatially varying external pressure has been analyzed. Stationary flow predictions were obtained to describe the conditions under which the jets remain in pressure balance with the surrounding medium. The predicted flow parameters were confirmed by numerical flow simulations. It is shown that a rich pattern of internal shocks can develop inside the propagating jets as long as two conditions are met: (1) the external pressure variation must be sufficient to recollimate the jet; and (2), the product of the Mach number and the radius of the jet must be large enough. The simulated pressure contours of the jets are given in graphic form.
Falle Sam A. E. G.
Wilson Michael J.
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