ROSAT X-ray observations of 3CRR radio sources |
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| Authors: | M J Hardcastle D M Worrall |
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| Institution: | Department of Physics, University of Bristol, Tyndall Avenue, Bristol BS8 1TL; Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA |
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| 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. |
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| Keywords: | galaxies: active quasars: general X-rays: galaxies |
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