Fundamental X-ray Corona Parameters of Swift/BAT AGN

Abstract

While X-ray emission from active galactic nuclei (AGN) is common, the detailed physics behind this emission is not well understood. This is in part because high quality broadband spectra are required to precisely derive fundamental parameters of X-ray emission such as the photon index, folding energy, and reflection coefficient. Here we present values of such parameters for 33 AGN observed as part of the 105 month Swift/BAT campaign and with coordinated archival XMM-Newton and NuSTAR observations. We look for correlations between the various coronal parameters in addition to correlations between coronal parameters and physical properties such as black hole mass and Eddington ratio. Using our empirical model, we find good fits to almost all of our objects. The folding energy was constrained for 30 of our 33 objects. When comparing Seyfert 1 - 1.9 to Seyfert 2 galaxies, a K-S test indicates that Seyfert 2 AGN have lower Eddington ratios and photon indices than Seyfert 1 - 1.9 objects with p-values of $5.6\times 10^{-5}$ and $7.5\times 10^{-3}$ respectively. We recover a known correlation between photon index and reflection coefficient as well as the X-ray Baldwin effect. Finally, we find that the inclusion of the high energy Swift BAT data significantly reduces the uncertainties of spectral parameters as compared to fits without the BAT data.

arXiv comment20 pages, 15 figures, and 5 tables. Accepted for publication in MNRAS

References in corpus (122)

• Unified Schemes for Radio-Loud Active Galactic Nuclei
• On the Absorption of X-rays in the Interstellar Medium
• Observational Evidence of AGN Feedback
• The European Photon Imaging Camera on XMM-Newton: The MOS Cameras
• The Nuclear Spectroscopic Telescope Array (NuSTAR) Mission
• The Host Galaxies and Classification of Active Galactic Nuclei
• Reverberation Measurements for 17 Quasars and the Size-Mass-Luminosity Relations in Active Galactic Nuclei
• The Man Behind the Curtain: X-rays Drive the UV through NIR Variability in the 2013 AGN Outburst in NGC 2617
• Central Masses and Broad-Line Region Sizes of Active Galactic Nuclei. II. A Homogeneous Analysis of a Large Reverberation-Mapping Database
• The Relation between Black Hole Mass, Bulge Mass, and Near-Infrared Luminosity
• HI4PI: A full-sky HI survey based on EBHIS and GASS
• Radiative Transfer in a Clumpy Universe: II. The Utraviolet Extragalactic Background
• The Burst Alert Telescope (BAT) on the Swift MIDEX Mission
• The M-sigma and M-L Relations in Galactic Bulges and Determinations of their Intrinsic Scatter
• Modelling the behaviour of accretion flows in X-ray binaries
• First Results from the Catalina Real-time Transient Survey
• A fundamental plane of black hole activity
• Mid-Infrared Selection of Active Galaxies
• The synthesis of the cosmic X-ray background in the Chandra and XMM-Newton era
• The host galaxies of radio-loud AGN: mass dependencies, gas cooling and AGN feedback
• A Structure for Quasars
• Going with the flow: can the base of jets subsume the role of compact accretion disk coronae?
• ASCA observations of Seyfert 1 galaxies: II. Relativistic Iron K-alpha emission
• An X-ray spectral study of 24 type-1 AGN
• BAT AGN Spectroscopic Survey - V. X-ray properties of the Swift/BAT 70-month AGN catalog
• Broad iron lines in Active Galactic Nuclei
• An X-ray Spectral Model for Compton-Thick Toroidal Reprocessors
• An Explanation for the soft X-ray excess in AGN
• Is the soft excess in AGN real?
• Fluorescent iron lines as a probe of astrophysical black hole systems
• The Lick AGN Monitoring Project: Broad-Line Region Radii and Black Hole Masses from Reverberation Mapping of Hbeta
• The Two-Phase Pair Corona Model for Active Galactic Nuclei and X-ray Binaries: How to Obtain Exact Solutions
• The 105 month Swift-BAT all-sky hard X-ray survey
• The AGN Black Hole Mass Database
• BAT AGN Spectroscopic Survey I: Spectral Measurements, Derived Quantities, and AGN Demographics
• Radiative Processes, Spectral States and Variability of Black-Hole Binaries
• Correlation between Compton reflection and X-ray slope in Seyferts and X-ray binaries
• Optical Continuum and Emission-Line Variability of Seyfert 1 Galaxies
• Discovery of a relation between black hole mass and soft X-ray time lags in active galactic nuclei
• Iron fluorescence from within the innermost stable orbit of black hole accretion disks
• Dusty Structure Around Type-I Active Galactic Nuclei: Clumpy Torus Narrow Line Region and Near-Nucleus Hot Dust
• New Spectral Model for Constraining Torus Covering Factors from Broadband X-ray Spectra of Active Galactic Nuclei
• Discovery of 21 New Changing-look AGNs in Northern Sky
• Reverberation Mapping Results for Five Seyfert 1 Galaxies
• Compton reflection and iron fluorescence in BeppoSAX observations of Seyfert type 1 galaxies
• A Reverberation-Based Mass for the Central Black Hole in NGC 4151
• The Lick AGN Monitoring Project: Reverberation Mapping of Optical Hydrogen and Helium Recombination Lines
• Broad iron K-alpha emission lines as a diagnostic of black hole spin
• Steps Toward Determination of the Size and Structure of the Broad-Line Region in Active Galactic Nuclei. XVI. A Thirteen-Year Study of Spectral Variability in NGC 5548
• AGN Type-casting: Mrk 590 No Longer Fits the Role
• A Combined Optical and X-ray Study of Unobscured Type 1 AGN. I. Optical Spectra and SED Modeling
• Testing warm Comptonization models for the origin of the soft X-ray excess in AGN
• ON THE GEOMETRY OF THE X-RAY EMITTING REGION IN SEYFERT GALAXIES
• On the evolution of the black hole:spheroid mass ratio
• Testing the Unification Model for AGN in the Infrared: are the obscuring tori of Type 1 and 2 Seyferts different?
• The Cores of the Fe K$\alpha$ Lines in Active Galactic Nuclei: an Extended Chandra High Energy Grating Sample
• Testing the Kerr black hole hypothesis using X-ray reflection spectroscopy
• BAT AGN Spectroscopic Survey -- XII. The relation between coronal properties of Active Galactic Nuclei and the Eddington ratio
• Simultaneous EUVE/ASCA/RXTE Observations of NGC 5548
• NuSTAR catches the unveiling nucleus of NGC 1068
• Testing Comptonization models using BeppoSAX observations of Seyfert 1 galaxies
• The Mass of the Black Hole in the Seyfert 1 Galaxy NGC 4593 from Reverberation Mapping
• A Search for "Dwarf" Seyfert Nuclei. VII. A Catalog of Central Stellar Velocity Dispersions of Nearby Galaxies
• A NuSTAR census of coronal parameters in Seyfert galaxies
• Reverberation Mapping of Optical Emission Lines in Five Active Galaxies
• The broad band spectral variability of MCG-6-30-15 observed by NuSTAR and XMM-Newton
• The Link Between the Hidden Broad Line Region and the Accretion Rate in Seyfert 2 Galaxies
• The 1.5 Ms Observing Campaign on IRAS 13224-3809: X-ray Spectral Analysis I
• Simultaneous NuSTAR and XMM-Newton 0.5-80 keV spectroscopy of the Narrow Line Seyfert 1 galaxy SWIFT J2127.4+5654
• The Swift BAT-detected Seyfert 1 Galaxies: X-ray Broadband Properties and Warm Absorbers
• Reflection in Seyfert Galaxies and the Unified Model of AGN
• Radiation spectra of warm and optically thick coronae in AGN
• The Soft-Excess in Mrk 509: Warm Corona or Relativistic Reflection?
• Optical Spectral Properties of Swift BAT Hard X-ray Selected Active Galactic Nuclei Sources
• X-ray reflection in the Seyfert galaxy 1H0419-577 revealing strong relativistic effects in the vicinity of a Kerr black hole
• The Broad-band X-ray Spectrum of IC 4329A from a Joint NuSTAR/Suzaku Observation
• The existence of warm and optically thick dissipative coronae above accretion disks
• Obscuration in AGNs: near-infrared luminosity relations and dust colors
• A hard X-ray view of the soft excess in AGN
• A comprehensive analysis of the hard X-ray spectra of bright Seyfert galaxies
• Hard X-ray spectra of AGN in the INTEGRAL complete sample
• A remarkable long-term light curve, and deep, low-state spectroscopy: Swift & XMM-Newton monitoring of the NLS1 galaxy Mkn 335
• A Stellar Dynamical Mass Measurement of the Black Hole in NGC 3998 from Keck Adaptive Optics Observations
• Spectropolarimetry of Seyfert 1 galaxies with equatorial scattering: Black hole masses and Broad Line Region characteristics
• The hard X-ray spectrum of NGC 5506 as seen by NuSTAR
• Narrow Line Seyfert 1 galaxies at hard X-rays
• Broadband study of hard X-ray selected absorbed AGN
• Coronal Properties of the Seyfert 1.9 Galaxy MCG -05-23-016 Determined from Hard X-ray Spectroscopy with NuSTAR
• Special relativistic effects on the strength of the fluorescent K-alpha iron line from black hole accretion disks
• Full Spectral Survey of Active Galactic Nuclei in the Rossi X-ray Timing Explorer Archive
• Suzaku Observations of Moderately Obscured (Compton-thin) Active Galactic Nuclei Selected by Swift/BAT Hard X-ray Survey
• On the Origin of Broad Fe K alpha and Hi H alpha Lines in AGN
• Can the soft excess in AGN originate from disc reflection?
• What is the origin of the soft excess in AGN?
• A dichotomy between the hard state spectral properties of black hole and neutron star X-ray~binaries
• The Inner Kiloparsec of Mrk 273 with Keck Adaptive Optics
• The Multi-Layer Variable Absorbers in NGC 1365 Revealed by XMM-Newton and NuSTAR
• Photoionized emission and absorption features in the high-resolution X-ray spectra of NGC 3783
• Broad-line region structure and kinematics in the radio galaxy 3C 120
• Broadband X-ray spectral analysis of the Seyfert 1 galaxy GRS 1734-292
• Relations between phenomenological and physical parameters in the hot coronae of AGNs computed with the MoCA code
• The Nature of Soft Excess in ESO 362-G18 Revealed by XMM-Newton and NuSTAR Spectroscopy
• Supermassive black holes with high accretion rates in active galactic nuclei: X. Optical variability characteristics
• Examining the Physical Conditions of a Warm Corona in Active Galactic Nuclei Accretion Discs
• Coronal properties of Swift/BAT-selected Seyfert 1 AGN observed with NuSTAR
• A high-density relativistic reflection origin for the soft and hard X-ray excess emission from Mrk 1044
• A Consistent Set of Empirical Scaling Relations for Spiral Galaxies: The $(v_{\max },M_{\mathrm{DM}})$-$({\sigma }_0,M_{\mathrm{BH}},\varphi )$ Relations
• High-redshift Extreme Variability Quasars from Sloan Digital Sky Survey Multi-Epoch Spectroscopy
• A Relativistic Disc Reflection Model for 1H0419-577: Multi-Epoch Spectral Analysis with XMM-Newton and NuSTAR
• Microlensing of the X-ray, UV and optical emission regions of quasars: Simulations of the time-scales and amplitude variations of microlensing events
• An X-ray view of absorbed INTEGRAL AGN
• Correlation between relativistic reflection fraction and photon index in NuSTAR sample of Seyfert 1 AGN
• X-Ray Variability and the Inner Region in Active Galactic Nuclei
• Distinct High Energy Cutoff Variation Patterns in Two Seyfert Galaxies
• Investigating the Covering Fraction Distribution of Swift/BAT AGN with X-ray and IR Observations
• Observing imprints of black hole event horizon on X-ray spectra
• Accretion Disk Models
• X-Ray Spectral Parameters for a Sample of 95 Active Galactic Nuclei
• Highly ionized disc and transient outflows in the Seyfert galaxy IRAS 18325-5926
• The Iron Line Profile from Warped Black Hole Accretion Disks
• Broad-band X-ray observation of broad-line radio galaxy 3C 109
• Measuring Supermassive Black Hole Spin in the Chandra COSMOS-Legacy Survey

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• X-ray Coronal Properties of Swift/BAT-Selected Seyfert 1 Active Galactic Nuclei
• Radiative Particle-in-Cell Simulations of Turbulent Comptonization in Magnetized Black-Hole Coronae
• The distribution of the coronal temperature in Seyfert 1 galaxies
• A Catalog of 71 Coronal Line Galaxies in MaNGA: [NeV] is an Effective AGN Tracer
• Constraining the X-ray reflection in low accretion rate AGN using XMM-Newton, NuSTAR and Swift
• Extended Corona Models of X-ray Reverberation in the AGN 1H~0707-495 and IRAS 13224-3809
• Multiple Flares in the Changing-Look AGN NGC 5273
• The properties of the X-ray corona in the distant ($z=3.91$) quasar APM 08279+5255
• X-ray timing and spectral analysis of reverberating active galactic nuclei
• Predicting the black hole mass and correlations in X-ray reverberating AGN using neural networks
• Search for coronal temperature variation in Seyfert galaxies
• Coronal Properties of Low-Accreting AGNs using Swift, XMM-Newton and NuSTAR Observations
• X-ray spectral and timing analysis of the Compton Thick Seyfert 2 galaxy NGC 1068
• High-energy Emission from Turbulent Electron-ion Coronae of Accreting Black Holes
• Investigating Non-linear and Stochastic Hard X-ray Variability of Active Galactic Nuclei using Recurrence Analysis
• The XMM-Newton and NuSTAR view of IRASF11119+3257. I Detection of multiple UFO components and a very cold corona
• Hard X-ray emission in Centaurus A
• On joint analysing XMM-NuSTAR spectra of active galactic nuclei
• Hidden biases in flux-resolved X-ray spectroscopy
• Source identification for the Swift-BAT 150-month hard X-ray catalog using soft X-ray observations
• The X-ray coronae in NuSTAR bright active galactic nuclei