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1245+676 — A CSO/GPS Source being an Extreme Case of a Double-Double Structure

  • Andrzej Marecki (a1), Peter D. Barthel (a2), Antonis Polatidis (a3) and Izabela Owsianik (a3)
Abstract

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 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 — its outer structure, measuring 970 h −1 kpc, is five orders of magnitude larger than the 9.6 h −1 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.

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References
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Publications of the Astronomical Society of Australia
  • ISSN: 1323-3580
  • EISSN: 1448-6083
  • URL: /core/journals/publications-of-the-astronomical-society-of-australia
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