On 'hot spots' and the question of very narrow collimation of radio jets

Details On 'hot spots' and the question of very narrow collimation of radio jets On 'hot spots' and the question of very narrow collimation of radio jets

Dec 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982apj...263..571e&link_type=abstract

Astrophysical Journal, Part 1, vol. 263, Dec. 15, 1982, p. 571-575.

Astronomy and Astrophysics

Astronomy

31

Astronomical Models, Magnetohydrodynamic Flow, Radio Galaxies, Radio Jets (Astronomy), Axisymmetric Flow, Collimation, Flow Velocity, Supersonic Flow

Scientific paper

It is suggested that the extremely fine collimation of fluid that is ejected from some radio galaxies (change of angle of about 0.01) results from 'overcollimation', the bending of the flow lines toward the flow axis. The energy in transverse motion may then be dissipated on impact at the axis. A model is presented in which the ambient pressure of a surrounding cloud channels the flow toward the axis. Under simplifying assumptions, analytic solutions are obtainable for the shape of the channel.

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