Broad Band X-ray Constraints on the Accreting Black Hole in Quasar 4C 74.26

Abstract

X-ray data for quasar 4C 74.26 have previously been modeled with a broad Fe K$\alpha$ emission line and reflection continuum originating in the inner part of the accretion disk around the central supermassive black hole (SMBH), i.e. the strong gravity regime. We modeled broadband X-ray spectra from $Suzaku$ and $NuSTAR$ with MYTORUS, self-consistently accounting for Fe K$\alpha$ line emission, as well as direct and reflected continuum emission, from finite column density matter. A narrow Fe K$\alpha$ emission line originating in an X-ray reprocessor with solar Fe abundance far from the central SMBH is sufficient to produce excellent fits for all spectra. For the first time, we are able to measure the global, out of the line-of-sight column density to be in the range $\sim$$1.5$ to $\sim$$2.9\times 10^{24}$ cm${}^{-2}$, i.e. in the Compton thick regime, while the line-of-sight column density is Compton thin in all observations. The Fe K$\alpha$ emission line is unresolved in all but one observations. The Compton scattered continuum from distant matter removes the need for relativistic broadening of the Fe K$\alpha$ emission line, which is required for SMBH spin measurements. The resolved line observation can alternatively be modeled with a relativistic model but we do not find evidence for a truncated accretion disk model. We conclude that the X-ray emission in these 4C 74.26 data is unlikely to originate in the inner accretion disk region and thus cannot be used to measure SMBH spin.

arXiv comment$ApJ$ accepted. Uses $likeapj.cls,likeapj.bst$; 16 pages, 7 figures, 3 tables. LaTex style files available at https://github.com/qtast/likeapj/releases/latest

References in corpus (68)

• Unified Schemes for Radio-Loud Active Galactic Nuclei
• The Leiden/Argentine/Bonn (LAB) Survey of Galactic HI: Final data release of the combined LDS and IAR surveys with improved stray-radiation corrections
• The Nuclear Spectroscopic Telescope Array (NuSTAR) Mission
• Atomic Data for Astrophysics. II. New Analytic Fits for Photoionization Cross Sections of Atoms and Ions
• Central Masses and Broad-Line Region Sizes of Active Galactic Nuclei. II. A Homogeneous Analysis of a Large Reverberation-Mapping Database
• AGN Black Hole Masses and Bolometric Luminosities
• Improved Reflection Models of Black-Hole Accretion Disks: Treating the Angular Distribution of X-rays
• Hard X-ray Detector (HXD) on Board Suzaku
• An XMM-Newton survey of broad iron lines in Seyfert galaxies
• An X-ray Spectral Model for Compton-Thick Toroidal Reprocessors
• Fluorescent iron lines as a probe of astrophysical black hole systems
• The Discovery of the First "Changing Look" Quasar: New Insights into the Physics & Phenomenology of AGN
• Relativistic X-ray Lines from the Inner Accretion Disks Around Black Holes
• X-ray Spectra of a large sample of Quasars with ASCA
• The role of the reflection fraction in constraining black hole spin
• An XMM-Newton spectral survey of 12 micron selected galaxies. I. X-ray data
• The Suzaku view of highly-ionised outflows in AGN: I - Statistical detection and global absorber properties
• X-ray reflection spectra from ionized slabs
• XMM-Newton EPIC observations of 21 low-redshift PG quasars
• Understanding X-ray reflection emissivity profiles in AGN: Locating the X-ray source
• CAIXA: a Catalogue of AGN In the XMM-Newton Archive I. Spectral analysis
• New Spectral Model for Constraining Torus Covering Factors from Broadband X-ray Spectra of Active Galactic Nuclei
• An X-ray Spectral Survey of Radio-Loud AGN With ASCA
• The Spin of the Supermassive Black Hole in NGC 3783
• The Nature of the Compton-thick X-ray Reprocessor in NGC 4945
• The Cores of the Fe K$\alpha$ Lines in Active Galactic Nuclei: an Extended Chandra High Energy Grating Sample
• Ultra-fast outflows in radio-loud active galactic nuclei
• The Cores of the Fe K Lines in Seyfert I Galaxies Observed by the Chandra High Energy Grating
• Determination of the X-ray reflection emissivity profile of 1H 0707-495
• Study on X-ray Spectra of Obscured AGNs based on Monte Carlo simulation - an interpretation of observed wide-band spectra
• FERO: Finding Extreme Relativistic Objects. I. Statistics of Relativistic Fe Kalpha lines in Radio-Quiet Type 1 AGN
• A Suzaku survey of Fe K lines in Seyfert 1 AGN
• Measuring Supermassive Black Hole Spins in Active Galactic Nuclei
• IACHEC Cross-Calibration of Chandra, NuSTAR, Swift, Suzaku, and XMM-Newton with 3C 273 and PKS 2155-304
• Fe-K line probing of material around the AGN central engine with Suzaku
• Cross-calibration of the X-ray Instruments onboard the Chandra, INTEGRAL, RXTE, Suzaku, Swift, and XMM-Newton Observatories using G21.5-0.9
• On the origin of the Fe K-alpha line cores in Active Galactic Nuclei
• Iron K$\alpha$ emission in type-I and type-II Active Galactic Nuclei
• X-ray reprocessing in Seyfert Galaxies: simultaneous XMM-Newton/BeppoSAX observations
• Chandra High Energy Grating Observations of the Fe Ka Line Core in Type 2 Seyfert Galaxies: A Comparison with Type 1 Nuclei
• Fe XXV and Fe XXVI lines from low velocity, photoionised gas in the X-ray spectra of AGN
• Fe XXV and Fe XXVI Diagnostics of the Black Hole and Accretion Disk in Active Galaxies: Chandra Time-Resolved Spectroscopy of NGC 7314
• A Monte Carlo Markov Chain based investigation of black hole spin in the active galaxy NGC3783
• The XMM-Newton view of PG quasars: II. Properties of the Fe K-alpha line
• An X-ray spectral model for clumpy tori in active galactic nuclei
• Probing the geometry and motion of AGN coronae through accretion disc emissivity profiles
• Relativistic Broadening of Iron Emission Lines in a Sample of AGN
• Assessing black hole spin in deep Suzaku observations of Seyfert 1 AGN
• The Black Hole Spin and Soft X-ray Excess of the Luminous Seyfert Galaxy Fairall 9
• Statistics of relativistically broadened Fe K-alpha lines in AGN
• The Compton shoulder of the Fe Kalpha fluorescent emission line in active galactic nuclei
• A Compton-thin Solution for the Suzaku X-ray Spectrum of the Seyfert 2 Galaxy Mkn 3
• The Nature of the Stable Soft X-ray Emissions in Several Types of Active Galactic Nuclei Observed by Suzaku
• Delving Into X-ray Obscuration of Type 2 AGN, Near and Far
• Modelling the Broad-band Spectra of MCG-6-30-15 with a Relativistic Reflection Model
• Evidence for an Untruncated Accretion Disk in the Broad-Line Radio Galaxy 4C+74.26
• A complete view of the broad-line radio galaxy 4C+74.26 with XMM-Newton
• Relativistic Fe K alpha line study in Seyfert 1 galaxies observed with Suzaku
• X-Ray Spectra of Intermediate-Luminosity, Radio-Loud Quasars
• Relativistic Fe K$\alpha$ Line Revealed in the Composite X-ray Spectrum of Narrow Line Seyfert 1 Galaxies --- do their black holes have averagely low or intermediate spins?
• The X-ray reflection spectrum of the radio-loud quasar 4C 74.26
• No Signatures of Black-Hole Spin in the X-ray Spectrum of the Seyfert 1 Galaxy Fairall 9
• Exploring the disc/jet interaction in the radio-loud quasar 4C +74.26 with Suzaku
• Relativistic reflection from accretion disks in the population of Active Galactic Nuclei at z=0.5-4
• A Chandra-HETG VIEW OF MCG +8-11-11
• Signatures of the disk-jet coupling in the Broad-line Radio Quasar 4C+74.26
• The warm absorber in the radio-loud quasar 4C +74.26
• Unwrapping the X-ray Spectra of Active Galactic Nuclei

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