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 Jet Speeds in Wide Angle Tailed Radio Galaxies


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We present a sample of 30 wide angle tailed radio galaxies WATs that we use to constrain the jet speeds in these sources. We measure the distribution of jet-sidedness ratios for the sample, and assuming that the jets are beamed, jet speeds in the range 0.3-0.7c are obtained. Whilst the core prominence of the sample, which ought to be a reliable indicator of beaming, shows little correlation with the jet-sidedness, we argue that due to the peculiar nature of WATs core-prominence is unlikely to be a good indicator of beaming in these sources. We further show that if the jets are fast and light, then the galaxy speeds required to bend jets into C-shapes such as those seen in 0647+693 are reasonable for a galaxy in a merging or recently merged cluster.



Author: Nazirah N. Jetha; Martin J. Hardcastle; Irini Sakelliou; .

Source: https://archive.org/







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