The Complex X-ray Obscuration Environment in the Radio Loud Type 2 Quasar 3C 223

Abstract

3C 223 is a radio loud, Type 2 quasar at $z=0.1365$ with an intriguing XMM-Newton spectrum that implicated it as a rare, Compton-thick ($N_{\mathrm{H}}\gtrsim 1.25\times 10^{24}$ cm${}^{-2}$) active galactic nucleus (AGN). We obtained contemporaneous XMM-Newton and NuSTAR spectra to fit the broad-band X-ray spectrum with the physically-motivated MYTorus and borus02 models. We confirm earlier results that the obscuring gas is patchy with both high (though not Compton-thick) levels of obscuration ($N_{\mathrm{H}}>10^{23}$ cm${}^{-2}$) and gas clouds with column densities up to an order of magnitude lower. The spectral fitting results indicate additional physical processes beyond those modeled in the spectral grids of MYTorus and borus02 impact the emergent spectrum: the Compton-scattering region may be extended beyond the putative torus; a ring of heavy Compton-thick material blocks most X-ray emission along the line of sight; or the radio jet is beamed, boosting the production of Fe K$\alpha$ line photons in the global medium compared with what is observed along the line of sight. We revisit a recent claim that no radio loud Compton-thick AGN have yet been conclusively shown to exist, finding three reported cases of radio loud AGN with global average (but not line-of-sight) column densities that are Compton-thick. Now that it is possible to separately determine line-of-sight and global column densities, inhomogeneity in the obscuring medium has consequences for how we interpet the spectrum and classify an AGN as "Compton-thick."

accepted for publication in ApJ; Figure 3 illustrates possible physical processes shaping emergent X-ray spectrum

References in corpus (37)

• A Cosmological Framework for the Co-Evolution of Quasars, Supermassive Black Holes, and Elliptical Galaxies: I. Galaxy Mergers & Quasar Activity
• The Co-Evolution of Galaxies and Supermassive Black Holes: Insights from Surveys of the Contemporary Universe
• An Observational Determination of the Bolometric Quasar Luminosity Function
• The synthesis of the cosmic X-ray background in the Chandra and XMM-Newton era
• Toward the Standard Population Synthesis Model of the X-Ray Background: Evolution of X-Ray Luminosity and Absorption Functions of Active Galactic Nuclei Including Compton-Thick Populations
• AGN Dusty Tori: I. Handling of Clumpy Media
• Piecing Together the X-ray Background: Bolometric Corrections for Active Galactic Nuclei
• Hot and cold gas accretion and feedback in radio-loud active galaxies
• X-ray spectral properties of AGN in the Chandra Deep Field South
• On the X-ray, optical emission line and black hole mass properties of local Seyfert galaxies
• Multiwavelength study of massive galaxies at z~2. II. Widespread Compton thick AGN and the concurrent growth of black holes and bulges
• The close environments of accreting massive black holes are shaped by radiative feedback
• BAT AGN Spectroscopic Survey I: Spectral Measurements, Derived Quantities, and AGN Demographics
• Evidence for powerful AGN winds at high redshift: Dynamics of galactic outflows in radio galaxies during the "Quasar Era"
• Fast outflows in compact radio sources: evidence for AGN-induced feedback in the early stages of radio source evolution
• The X-ray nuclei of intermediate-redshift radio sources
• On the origin of soft X-rays in obscured AGN: answers from high-resolution spectroscopy with XMM-Newton
• X-ray Absorption and Reflection in Active Galactic Nuclei
• The X-Ray to Mid-Infrared Relation of AGN at High Luminosity
• IACHEC Cross-Calibration of Chandra, NuSTAR, Swift, Suzaku, and XMM-Newton with 3C 273 and PKS 2155-304
• The XMM-Newton long look of NGC 1365: uncovering of the obscured X-ray source
• The mid IR -- hard X-ray correlation in AGN and its implications for dusty torus models
• Compton thick active galactic nuclei in Chandra surveys
• NuSTAR unveils a Compton-thick Type 2 quasar in Mrk 34
• Discovery of Kiloparsec Extended Hard X-ray Continuum and Fe K alpha from the Compton Thick AGN ESO428-G014
• Hubble Space Telescope Near-Infrared Snapshot Survey of 3CR radio source counterparts at low redshift
• The properties of the AGN torus as revealed from a set of unbiased NuSTAR observations
• Survival of the obscuring torus in the most powerful active galactic nuclei
• The Multi-Layer Variable Absorbers in NGC 1365 Revealed by XMM-Newton and NuSTAR
• Compton-thick AGN in the NuSTAR era III: A systematic study of the torus covering factor
• The quest for Type 2 quasars: Chandra observations of luminous obscured quasars in the Sloan Digital Sky Survey
• The mid-infrared emission of Seyfert galaxies. A new analysis of ISOCAM data
• Delving Into X-ray Obscuration of Type 2 AGN, Near and Far
• NuSTAR Uncovers an Extremely Local Compton-thick AGN in NGC 4968
• Where are Compton-thick radio galaxies? A hard X-ray view of three candidates
• The kpc Scale Fe K$\alpha$ Emission in the Compton Thin Seyfert 2 Galaxy NGC 4388 resolved by Chandra
• Powerful ionized gas outflows in the interacting radio galaxy 4C +29.30

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