The Radio Galaxy 3C 66

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Abstract
The radio galaxy 3C 66 has been mapped at frequencies of 1.4, 2.7 and 5.0 GHz with the Cambridge One-Mile telescope and at 5.0 GHz with the 5-km telescope. The main source (3C 66B) consists of a compact central component less than 0.8 kpc in diameter, coincident with the nucleus of the galaxy, together with very extended regions of low brightness emission on each side. The most remarkable feature of the source is a narrow jet of emission, approximately 30 kpc in length, linking the galactic nucleus to one of the extended regions and consisting of a number of compact components, less than 1 kpc in diameter, superimposed on a weak continuous background. The structure of 3C 66B, which suggests that energy is continuously supplied by the nucleus to the outer components, has a simple interpretation in terms of the bubble model recently proposed for more powerful, double radio galaxies. A further source (3C 66A), less than 1″.6 in diameter, is probably unrelated to 3C 66B.

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