A non cool-core 4.6-keV cluster around the bright nearby radio galaxy PKS B1416-493

D. M. Worrall, M. Birkinshaw

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We present new X-ray (Chandra) and radio (ATCA) observations of the z=0.09 radio galaxy PKS B1416-493, a member of the southern equivalent of the 3CRR sample. We find the source to be embedded in a previously unrecognized bright kT=4.6 keV non cool-core cluster. The discovery of new clusters of such high temperature and luminosity within z=0.1 is rare. The radio source was chosen for observation based on its intermediate FRI/II morphology. We identify a cavity coincident with the northeast lobe, and excess counts associated with the southwest lobe that we interpret as inverse Compton X-ray emission. The jet power, at 5.3 x 10^44 erg/s, when weighted by radio source density, supports suggestions that radio sources of intermediate morphology and radio power may dominate radio-galaxy heating in the local Universe.
Original languageEnglish
Pages (from-to)2903-2912
Number of pages10
JournalMonthly Notices of the Royal Astronomical Society
Issue number3
Publication statusPublished - 1 Feb 2017


  • galaxies: active
  • galaxies: clusters: general
  • galaxies: individual: (PKSB1416−493)
  • galaxies: jets
  • radio continuum: galaxies
  • X-rays: galaxies: clusters


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