Can the twin-exhaust model explain radio jets

Details Can the twin-exhaust model explain radio jets Can the twin-exhaust model explain radio jets

Sep 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981natur.293..277s&link_type=abstract

Nature, vol. 293, Sept. 24, 1981, p. 277-279. Research supported by the U.S. Department of Energy

Astronomy and Astrophysics

Astronomy

16

Astronomical Models, Galactic Nuclei, Galactic Radio Waves, Gravitational Effects, Magnetohydrodynamic Stability, Radio Jets (Astronomy), Active Galactic Nuclei, Black Holes (Astronomy), Gravitational Fields, Quasars, Radio Galaxies, Space Plasmas, Star Clusters

Scientific paper

Consideration is given to the validity of the twin-exhaust model for the formation of double jets in active galactic nuclei. Results of a fully two-dimensional axisymmetric simulation according to the Blandford-Rees (1974) twin-exhaust model including nonlinear hydrodynamic instabilities are presented which provide limits on the central luminosity, pressure scale height and sound speeds in a self-gravitating cloud of cool gas surrounding hot gas which can be accelerated into jets by buoyancy forces. These limits are compared with observational constraints imposed by quasars and the compact central components of radio galaxies and with theoretical constraints. It is concluded that the twin-exhaust model cannot be ruled out by these constraints, although distinct classes of confining clouds may occur, with a flat-bottomed stellar cluster potential capable of maintaining low-powered jets and a black hole necessary for the maintenace of powerful jets

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