Confinement of extragalactic radio sources by massive objects

Details Confinement of extragalactic radio sources by massive objects Confinement of extragalactic radio sources by massive objects

Mar 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976mnras.174..587c&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 174, Mar. 1976, p. 587-599.

Astronomy and Astrophysics

Astronomy

1

Astronomical Models, Energy Requirements, Extragalactic Radio Sources, Gravitational Effects, Confinement, Galactic Radiation, Gravitational Collapse, Radio Astronomy

Scientific paper

Models of extragalactic double radio sources are analyzed in which the components are excited and gravitationally contained by a massive object acting on the diffuse cold matter distributed throughout each component. The energy requirements, time scales, and observational constraints for a uniform radio component confined by one or more massive objects are investigated, and nonuniform components are briefly considered. It is found that only models in which the thermal gas and magnetic field are rather uniform are consistent with observation. Some difficulties with the gravitational-confinement model are discussed, including the energy requirement, the streaming and Rayleigh-Taylor instabilities, and gravitational instability. Several observational tests of the present model are proposed.

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