3C 129 : The GMRT observations

Abstract

We present radio maps of the head-tail radio galaxy, 3C 129 at 240 and 610 MHz using the Giant Metrewave Radio Telescope. We have studied in detail the morphology of the source and the distribution of spectral index over the object. We find large-scale spectral steepening along the jet away from the core. Using synchrotron spectral ageing theory, we infer the age (time since particle acceleration) of electrons at various locations along the jet and ascribe an age of $\sim$200 Myr to 3C 129. We find that the "Crosspiece" has a spectral index of $\sim -1$, similar to the jet, which is not consistent with the suggestion by Lane et al. (2002) that it could be a radio relic. We have also studied 3C 129.1 and the other sources in the field.

9 Pages, 5 Figures, Accepted for publication in Astronomy & Astrophysics

References in corpus (5)

• The properties of the X-ray holes in the intracluster medium of the Perseus cluster
• Four Extreme Relic Radio Sources in Clusters of Galaxies
• Magnetic Fields in the 3C 129 Cluster
• 3C 129 at 90cm: Evidence for a Radio Relic?
• Thermal and Non-thermal Plasmas in the Galaxy Cluster 3C 129

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