A model for collimation of supersonic beams in extragalactic radio sources

Details A model for collimation of supersonic beams in extragalactic radio sources A model for collimation of supersonic beams in extragalactic radio sources

Apr 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981jrasc..75...69b&link_type=abstract

Journal of the Royal Astronomical Society of Canada, vol. 75, Apr. 1981, p. 69-93. Research supported by the Natural Sciences a

Astronomy and Astrophysics

Astronomy

28

Beams (Radiation), Collimation, Extragalactic Radio Sources, Supersonic Jet Flow, Magnetic Effects, Pressure Effects, Quasars, Radio Galaxies

Scientific paper

A model for the dynamics of 'heavy' supersonic beams in extragalactic radio sources is described, and its consequences for interpreting data on the collimation properties of radio jets in galaxies and quasars are explored. The model assumes that nonrelativistic supersonic beams of hot fluid originate in the active central regions of radio galaxies and quasars, and describes the supersonic dynamics of these beams in a self-consistent way. In contrast with previous work, the beam cross section is solved for dynamically, considering the effects on the transverse expansion of the beam of (1) internal pressure, (2) external confining pressure, and (3) self-consistent magnetic fields in the flow.

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