A new population of FRIIs?

Details A new population of FRIIs? A new population of FRIIs?

Oct 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006xmm..prop...29s&link_type=abstract

XMM-Newton Proposal ID #05009104

Physics

Active Galactic Nuclei, Quasars, Bl-Lac Objects, X-Ray Background, 3C 61.1, 3C 300, Xmm-Newton Proposal 05009104

Scientific paper

Unification scenarios explain various flavors of radio galaxies and quasars with orientation-dependent obscuration effects. Type-2 FRII galaxies contain a quasar seen through a dusty molecular torus aligned with the radio jet. However, there exist a population of FRIIs, found with Spitzer, that does not fit into this scheme. These FRIIs exhbit high-excitation nuclear optical emission lines, but weak 15um luminosities. One possibility is very large obscuration; alternatively, they may be a genuinely different population. XMM spectroscopy and Chandra imaging will discriminate between the two scenarios.

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