Observational results 3. Discussion Acknowledgments References 1. For many years they were not studied intensively, because of their uninteresting structure at arcsec resolution. In addition, very complex structures reminiscent of sharply bent jets are also observed. However, 3C380 does not fit to this pattern.
Apparent velocities have been measured on the scale mas, it ranges from to .
The quasar 3C380 is a very active, very strong and it shows a large range of variability. Discussion Initial disturbance in the jet direction can account for some of the observed features. 3C380 exhibits several features expected of FR II sources seen approximately end-on, like superluminal motion in the core, the similarity of the NW knots to double hot spots in FR II lobes and so on. Radio statistics suggest that CSS objects are rather intrinsically small sources of subgalactic size. High resolution observations reveal a striking similar radio structure to that observed in the extended sources, with jets and lobes, and invariably displaying a flat spectrum radio core at high frequencies.