Hostname: page-component-cd9895bd7-q99xh Total loading time: 0 Render date: 2024-12-31T20:27:25.831Z Has data issue: false hasContentIssue false
  • English
  • Français

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

Published online by Cambridge University Press:  05 March 2013

Andrzej Marecki ,
Peter D. Barthel ,
Antonis Polatidis  and
Izabela Owsianik
Andrzej Marecki
Affiliation:
Toruń Centre for Astronomy, Nicholas Copernicus University, Toruń, Poland.
Peter D. Barthel
Affiliation:
Kapteyn Institute, Department of Astronomy, Groningen University, The Netherlands.
Antonis Polatidis
Affiliation:
Max-Planck-Institut für Radioastronomie, Bonn, Germany.
Izabela Owsianik
Affiliation:
Max-Planck-Institut für Radioastronomie, Bonn, Germany.
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

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.

Keywords

galaxies: activegalaxies: individual (1245+676)
Type
GPS/CSS Workshop
Information
Publications of the Astronomical Society of Australia , Volume 20 , Issue 1 , 2003 , pp. 16 - 18
Copyright
Copyright © Astronomical Society of Australia 2003

References

Alexander, P., & Leahy, J. P. 1987, MNRAS, 225, 1 Google Scholar
Hatziminaoglou, E., Siemiginowska, A., & Elvis, M. 2001, ApJ, 547, 90 Google Scholar
Komissarov, S. S., & Gubanov, A. G. 1994, A&A, 285, 27 Google Scholar
Lara, L., Cotton, W. D., Feretti, L., Giovannini, G., Marcaide, J. M., Márquez, I., & Venturi, T. 2001, A&A, 370, 409 Google Scholar
Liu, R., Pooley, G. G., & Riley, J. M. 1992, MNRAS, 257, 545 Google Scholar
Marecki, A., Falcke, H., Niezgoda, J., Garrington, S. T., & Patnaik, A. R. 1999, A&AS, 135, 273 Google Scholar
Peck, A. B., & Taylor, G. B. 2000, ApJ, 534, 90 Google Scholar
Schoenmakers, A. P., de Bruyn, A. G., Röttgering, H. J. A., van der Laan, H., & Kaiser, C. R. 2000, MNRAS, 315, 371 CrossRefGoogle Scholar