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Title:
Hydrostatic confinement of radio jets
Authors:
Lake, Kayll; Boucher, Patrick
Affiliation:
AA(Queen's University, Kingston, Canada), AB(Queen's University, Kingston, Canada)
Publication:
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 314, March 15, 1987, p. 507-512. NSERC-supported research. (ApJ Homepage)
Publication Date:
03/1987
Category:
Astrophysics
Origin:
STI
NASA/STI Keywords:
Extragalactic Radio Sources, Hydrodynamics, Radio Galaxies, Radio Jets (Astronomy), Conservation Laws, Laminar Flow, Relativity, Steady Flow, Velocity Distribution
DOI:
10.1086/165081
Bibliographic Code:
1987ApJ...314..507L

Abstract

The radio jets associated with NGC 6251, NGC 315, and 3C 31 are subjected to hydrodynamic detachment criteria in the ultra-relativistic and nonrelativistic limits under the assumption of the steady laminar motion of a perfect gas. All the jets demonstrate allowable sonic heights. However, all except the south jet in 3C 31 detach before the shoulder in their transverse intensity profiles. It is concluded that the observed spreading of these jets cannot be due simply to the action of a decreasing background pressure on a laminar jet boundary in steady motion.

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