NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2018-12-13 T11:50:24 PST
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For refcode 1999MNRAS.309..969H:
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Copyright by Royal Astronomical Society. 1999MNRAS.309..969H ROSAT X-ray observations of 3CRR radio sources M. J. Hardcastle and D. M. Worrall Accepted 1999 June 23. Received 1999 June 11; in original form 1999 January 11 ABSTRACT Over half the 3CRR sample of radio galaxies and quasars has been observed in X-rays with ROSAT pointed observations, and we present results from these observations, discussing many of the sources in detail. The improved spatial resolution of ROSAT over earlier missions allows a better separation of the nuclear and extended components of the X-ray emission. We investigate the relationship between nuclear X-ray and core radio luminosity, and show that our results support a model in which every radio galaxy and quasar has a beamed nuclear soft X-ray component directly related to the radio core. We report evidence for rich cluster environments around several powerful quasars. These X-ray environments are comparable to those of high-redshift radio galaxies. Keywords: galaxies: active - quasars: general - X-rays: galaxies
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