3C 109 - an obscured X-ray luminous quasar?

Details 3C 109 - an obscured X-ray luminous quasar? 3C 109 - an obscured X-ray luminous quasar?

Sep 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992mnras.258p..29a&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 258, no. 1, Sept. 1, 1992, p. 29P-32P. Research support

Astronomy and Astrophysics

Astronomy

36

Active Galactic Nuclei, Quasars, Radio Galaxies, X Ray Spectra, Luminosity, Rosat Mission

Scientific paper

We present the first X-ray spectrum of the active galaxy 3C 109 obtained with the Position Sensitive Proportional Counter on ROSAT. 3C 109 is one of the most intrinsically luminous sources within a redshift z = 0.5, having a 0.1-2.4 keV luminosity of 5.6 x 10 exp 45 erg/s which is comparable to that of 3C 273. The X-ray spectrum is affected by absorption in excess of the Galactic value derived from H I observations, at a level in good agreement with the reddening implied by optical data. Our result supports unification schemes for active galaxies which hypothesize that luminous radio galaxies and radio-loud quasars are the same population of objects viewed at different angles.

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