3 papers
astro-ph2002
Proper Motions in Compact Symmetric Objects
A. G. Polatidis, J. E. Conway
We discuss recent measurements of proper motions of the hotspots of Compact Symmetric Objects. Source expansion has been detected in ten CSOs so far and all these objects are very…
astro-ph2002
1245+676 - a CSO/GPS source being an extreme case of a double-double structure
Andrzej Marecki, Peter D. Barthel, Antonis Polatidis +1
AGN with the so-called `double-double' radio structure have been interpreted as restarted AGN where the inner structure is a manifestation of a new phase of activity which happened…
astro-ph1998
Renewed Radio Activity of Age 370 years in the Extragalactic Source 0108+388
Izabela Owsianik, John E. Conway, Antonis G. Polatidis
We present the results of multi-epoch global VLBI observations of the Compact Symmetric Object (CSO) 0108+388 at 5 GHz. Analysis of data spread over 12 years shows strong evidence…