X-ray spectroscopy of the broad line radio galaxy 3C111

Abstract

We present an ASCA observation of the broad line radio galaxy 3C111. The X-ray spectrum is well described by a model consisting of a photoelectrically-absorbed power-law form. The inferred absorbing column density is significantly greater than expected on the basis of 21-cm measurements of Galactic HI. Whilst this may be due intrinsic absorption from a circumnuclear torus or highly warped accretion disk, inhomogeneities and molecular gas within the foreground giant molecular cloud may also be responsible for some of this excess absorption. We also claim a marginal detection of a broad iron Ka line which is well explained as being a fluorescent line originating from the central regions of a radiatively-efficient accretion disk. This line appears weak in comparison to those found in (radio-quiet) Seyfert nuclei. We briefly discuss the implications of this fact.

7 pages including 2 postscript figures. Accepted for publication in MNRAS

Cited by in corpus (11)

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• An X-ray Spectral Survey of Radio-Loud AGN With ASCA
• Connection between the Accretion Disk and Jet in the Radio Galaxy 3C 111
• Hard X-Ray Spectra of Broad-Line Radio Galaxies from the Rossi X-Ray Timing Explorer
• X-ray evidence for the accretion disc-outflow connection in 3C 111
• Spectral Survey of X-Ray Bright Active Galactic Nuclei from the Rossi X-ray Timing Explorer
• A Simultaneous RXTE and XMM-Newton Observation of the Broad-Line Radio Galaxy 3C 111
• The Spectacular Radio-Near-IR-X-ray Jet of 3C 111: X-ray Emission Mechanism and Jet Kinematics
• An outburst scenario for the X-ray spectral variability in 3C 111
• Is 3C111, an apparently normal radio galaxy, the counterpart of 3EG J0416+3650?
• Excess Galactic molecular absorption toward the radio galaxy 3C 111