Astronomy and Astrophysics – Astrophysics
Scientific paper
2005-02-28
Mon.Not.Roy.Astron.Soc. 359 (2005) 1007-1021
Astronomy and Astrophysics
Astrophysics
Accepted for MNRAS
Scientific paper
10.1111/j.1365-2966.2005.08966.x
We have observed the prototypical wide-angle tail radio galaxy 3C465 with Chandra and XMM-Newton. X-ray emission is detected from the active nucleus and the inner radio jet, as well as a small-scale, cool component of thermal emission, a number of the individual galaxies of the host cluster (Abell 2634), and the hotter thermal emission from the cluster itself. The X-ray detection of the jet allows us to argue that synchrotron emission may be an important mechanism in other well-collimated, fast jets, including those of classical double radio sources. The bases of the radio plumes are not detected in the X-ray, which supports the model in which these plumes are physically different from the twin jets of lower-power radio galaxies. The plumes are in fact spatially coincident with deficits of X-ray emission on large scales, which argues that they contain little thermal material at the cluster temperature, although the minimum pressures throughout the source are lower than the external pressures estimated from the observed thermal emission. Our observations confirm both spatially and spectrally that a component of dense, cool gas with a short cooling time is associated with the central galaxy. However, there is no evidence for the kind of discontinuity in external properties that would be required in many models of the jet-plume transition in WATs. Although the WAT jet-plume transition appears likely to be related to the interface between this central cool component and the hotter intra-cluster medium, the mechanism for WAT formation remains unclear. We revisit the question of the bending of WAT plumes, and show that the plumes can be bent by plausible bulk motions of the intra-cluster medium, or by motion of the host galaxy with respect to the cluster, as long as the plumes are light.
Hardcastle Martin J.
Sakelliou Irini
Worrall Diana Mary
No associations
LandOfFree
A Chandra and XMM-Newton study of the wide-angle tail radio galaxy 3C465 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with A Chandra and XMM-Newton study of the wide-angle tail radio galaxy 3C465, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A Chandra and XMM-Newton study of the wide-angle tail radio galaxy 3C465 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-141981