Interactions of radio galaxies and the Intercluster Medium in Abell 160 and Abell 2642

NN Jetha, Irini Sakelliou, MJ Hardcastle, Trevor Ponman, Ian Stevens

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

We present Chandra and Very Large Array observations of two galaxy clusters, Abell 160 and Abell 2462, whose brightest cluster galaxies (BCGs) host wide angle tailed radio galaxies (WATs). We search for evidence of interactions between the radio emission and the hot, X-ray emitting gas, and we test various jet termination models. We find that both clusters have cool BCGs at the cluster centre, and that the scale of these cores (similar to 30-40 kpc for both sources) is of approximately the same scale as the length of the radio jets. For both sources, the jet flaring point is coincident with a steepening in the host cluster's temperature gradient, and similar results are found for 3C 465 and Hydra A. However, none of the published models of WAT formation offers a satisfactory explanation as to why this may be the case. Therefore, it is unclear what causes the sudden transition between the jet and the plume. Without accurate modelling, we cannot ascertain whether the steepening of the temperature gradient is the main cause of the transition, or merely a tracer of an underlying process.
Original languageEnglish
Pages (from-to)1394-1404
Number of pages11
JournalRoyal Astronomical Society. Monthly Notices
Volume358
DOIs
Publication statusPublished - 1 Apr 2005

Keywords

  • galaxies : clusters : individual : Abell 160
  • galaxies : clusters : individual : Abell 2462
  • X-rays : galaxies : clusters
  • galaxies : active
  • radio continuum : galaxies

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