
%0 Journal Article
%A Marecki, Andrzej 
%A Barthel, Peter D. 
%A Polatidis, Antonis 
%A Owsianik, Izabela 
%T 1245&#43;676 &#8212; a CSO/GPS Source being an Extreme Case of a Double-Double Structure
%J Publications of the Astronomical Society of Australia
%D 2003/06/04
%V 20
%N 1
%P 16-18
%K Keywords: galaxies: active &#8212; galaxies: individual (1245&#43;676)
%R https://doi.org/10.1071/AS02032
%U https://www.publish.csiro.au/paper/AS02032 
%X AGN with the so-called &#39;double-double&#39; radio structure have been interpreted as restarted AGN where the inner structure is a manifestation of a new phase of activity which happened to begin before the outer radio lobes resulting from the previous one had faded completely. The radio galaxy 1245+676 is an extreme example of such a double-double object &#8212; its outer structure, measuring 970&#32;h&#8211;1&#32;kpc, is five orders of magnitude larger than the 9.6&#32;h&#8211;1&#32;pc inner one. We present a series of VLBI observations of the core of 1245+676 which appears to be a compact symmetric object (CSO). We have detected the motion of the CSOs lobes, measured its velocity, and inferred the kinematic age of that structure. 
