The X-ray nuclei of FRII radio galaxies: unification and accretion modes

Details The X-ray nuclei of FRII radio galaxies: unification and accretion modes The X-ray nuclei of FRII radio galaxies: unification and accretion modes

Oct 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008xmm..prop....9h&link_type=abstract

XMM-Newton Proposal ID #06004509

Computer Science

Active Galactic Nuclei, Quasars, Bl-Lac Objects, X-Ray Background, 3C314.1, 3C319, 3C42, 4C14.27, 3C46, 3C341, 3C19, 3C67, 3C132

Scientific paper

We have recently shown that a population of powerful radio galaxies, the low-excitation radio galaxies, appears to have no accretion-related nuclear X-ray emission, despite having high-luminosity radio jets: plausibly these objects are accreting via a different, radiatively inefficient accretion mode compared to the better understood narrow-line radio galaxies and quasars, and form a separate population in unified models. However, the crucial X-ray constraints came from a small, inhomogenous sample. In AO6 and AO7 we were awarded time for observations of a carefully selected sample of radio galaxies. We now propose to complete observations of this sample, allowing us to make definitive statements about the nature of the accretion mode in these objects.

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