Astronomy and Astrophysics – Astrophysics
Scientific paper
Mar 1976
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976apj...204..352f&link_type=abstract
Astrophysical Journal, vol. 204, Mar. 1, 1976, pt. 1, p. 352-364.
Astronomy and Astrophysics
Astrophysics
10
Galactic Radiation, Radio Galaxies, Rotating Matter, Stellar Winds, Synchrotron Radiation, Astrophysics, Intergalactic Media, Quasars, Relativistic Particles
Scientific paper
It is proposed that a gravitationally bound supermassive object is located in the 'core' of each of the Cyg A radio clouds and that these objects are responsible for the prolonged ejection of magnetic plasma which produces the synchrotron radio emission. The objects are considered to be analogous to the massive rotators, or spinars, which have been used to model the central radio and optical activity of quasars. The formation of Cyg A is described in terms of the breakup of such an object in the central optical galaxy, and the physical properties of both the compact and the giant clouds are discussed, including the effects of intergalactic drag. It is shown that the spinars are capable of effectively replenishing the extended radio clouds with relativistic electrons, even if they are embedded within the compact clouds. The spinars are modeled quantitatively, and their possible detection is considered. The requirements of the proposed model are compared with those of several other models for bright double radio galaxies.
Flasar Michael F.
Morrison Philip
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