A Direct Test of the Fanaroff-Riley Dichotomy in the Nuclei of Radio Galaxies

Details A Direct Test of the Fanaroff-Riley Dichotomy in the Nuclei of Radio Galaxies A Direct Test of the Fanaroff-Riley Dichotomy in the Nuclei of Radio Galaxies

Oct 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005xmm..prop..150e&link_type=abstract

XMM-Newton Proposal ID #04040504

Physics

Active Galactic Nuclei, Quasars, Bl-Lac Objects, X-Ray Background, Da 240, 3C 305, 4C 73.08, Xmm-Newton Proposal 04040504

Scientific paper

A major puzzle in AGN physics is whether the Fanaroff-Riley dichotomy observed in large-scale structures of radio galaxies is a result of the impact of the hot-gas environment on the jet propagating through it, or instead due to intrinsic differences in the nuclei of these sources. Our X-ray studies of radio-galaxy nuclei have suggested that there may indeed be a nuclear Fanaroff-Riley dichotomy, but the crucial observations needed to confirm this have yet to be made. We propose a series of short (10-15 ks) EPIC observations of the nuclei of 5 sources that span the Fanaroff-Riley divide in 178-MHz power. We will search for, and constrain the luminosity of, absorbed components in the spectra of these sources, directly testing for a nuclear Fanaroff-Riley dichotomy.

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