The Broad-band X-ray Spectrum of IC 4329A from a Joint NuSTAR/Suzaku Observation

Abstract

We have obtained a deep, simultaneous observation of the bright, nearby Seyfert galaxy IC 4329A with Suzaku and NuSTAR. Through a detailed spectral analysis, we are able to robustly separate the continuum, absorption and distant reflection components in the spectrum. The absorbing column is found to be modest at $N_H=6\times 10^{21}$ cm${}^2$, and does not introduce any significant curvature in the Fe K band. We are able to place a strong constraint on the presence of a broadened Fe Kα line: $E=6.46_{-0.07}^{+0.08}$ keV rest frame with $\sigma =0.33_{-0.07}^{+0.08}$ keV and $EW=34_{-7}^{+8}$ eV, though we are not able to constrain any of the parameters of a relativistic reflection model. These results highlight the range in broad Fe Kα line strengths observed in nearby, bright AGN (roughly an order of magnitude), and imply a corresponding range in the physical properties of the inner accretion disk in these sources. We have also updated our previously reported measurement of the high-energy cutoff of the hard X-ray emission using both observatories rather than just NuSTAR alone: $E_{cut}=186\pm 14$ keV. This high-energy cutoff acts as a proxy for the temperature of the coronal electron plasma, enabling us to further separate this parameter from the optical depth of the plasma and to update our results for these parameters as well. We derive $kT=50_{-3}^{+6}$ keV with $\tau =2.34_{-0.11}^{+0.16}$ using a spherical geometry, $kT=61\pm 1$ keV with $\tau =0.68\pm 0.02$ for a slab geometry, with both having an equivalent goodness-of-fit.

arXiv comment36 pages (preprint format), 12 figures, accepted for publication in ApJ

References in corpus (42)

• Unified Schemes for Radio-Loud Active Galactic Nuclei
• On the Absorption of X-rays in the Interstellar Medium
• 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
• On characterising the variability properties of X-ray light curves from active galaxies
• Improved Reflection Models of Black-Hole Accretion Disks: Treating the Angular Distribution of X-rays
• An XMM-Newton survey of broad iron lines in Seyfert galaxies
• Measuring Black Hole Spin using X-ray Reflection Spectroscopy
• X-ray Spectral Variability and Rapid Variability of the Soft X-ray Spectrum Seyfert 1 Galaxies Ark 564 and Ton S180
• Plasma Ejection from Magnetic Flares and the X-ray Spectrum of Cygnus X-1
• Broad emission lines for negatively spinning black holes
• Suzaku observations of 'bare' active galactic nuclei
• A rapidly spinning supermassive black hole at the centre of NGC 1365
• Compton reflection and iron fluorescence in BeppoSAX observations of Seyfert type 1 galaxies
• A statistical relation between the X-ray spectral index and Eddington ratio of active galactic nuclei in deep surveys
• X-ray spectra of accretion discs with dynamic coronae
• The Cores of the Fe K$\alpha$ Lines in Active Galactic Nuclei: an Extended Chandra High Energy Grating Sample
• The long term X-ray spectral variability of AGN
• The Cores of the Fe K Lines in Seyfert I Galaxies Observed by the Chandra High Energy Grating
• FERO: Finding Extreme Relativistic Objects. I. Statistics of Relativistic Fe Kalpha lines in Radio-Quiet Type 1 AGN
• Measuring Supermassive Black Hole Spins in Active Galactic Nuclei
• An Expanded RXTE Survey of X-ray Variability in Seyfert 1 Galaxies
• Long-term variability of AGN at hard X-rays
• Simultaneous NuSTAR and XMM-Newton 0.5-80 keV spectroscopy of the Narrow Line Seyfert 1 galaxy SWIFT J2127.4+5654
• Fe K Emission and Absorption in the XMM-EPIC Spectrum of the Seyfert Galaxy IC 4329a
• The First INTEGRAL AGN Catalog
• The soft X-ray emission of Ark 120. XMM-Newton, NuSTAR, and the importance of taking the broad view
• The INTEGRAL Complete Sample of Type 1 AGN
• Hard X-ray spectra of AGN in the INTEGRAL complete sample
• The X-ray reflector in NGC 4945: a time and space resolved portrait
• Extreme flux states of NGC 4151 observed with INTEGRAL
• XMM-Newton observations of the heavily absorbed Seyfert 1 galaxy IC 4329A
• Measuring the Coronal Properties of IC4329A with NuSTAR
• NGC 5548: Lack of a Broad Fe K Line and Constraints on the Location of the Hard X-ray Source
• The X-ray Power Spectral Density Function and Black Hole Mass Estimate for the Seyfert AGN IC 4329a
• A Correlation Between the Ionization State of the Inner Accretion Disk and the Eddington Ratio of Active Galactic Nuclei
• High Resolution X-ray Spectroscopy of the Fe K complex in IC 4329A
• Warm absorber, reflection and Fe K line in the X-ray spectrum of IC 4329A
• GR models of the X-ray spectral variability of MCG--6-30-15
• Very fast X-ray spectral variability in Cygnus X-1: Origin of the hard and soft-state emission components
• The Distribution and Cosmic Density of Relativistic Iron Lines in Active Galactic Nuclei

Cited by in corpus (60)

• BAT AGN Spectroscopic Survey - V. X-ray properties of the Swift/BAT 70-month AGN catalog
• Calibration of the NuSTAR High Energy Focusing X-ray Telescope
• The subarcsecond mid-infrared view of local active galactic nuclei: II. The mid-infrared--X-ray correlation
• Testing warm Comptonization models for the origin of the soft X-ray excess in AGN
• Spectral and temporal properties of Compton scattering by mildly relativistic thermal electrons
• BAT AGN Spectroscopic Survey -- XII. The relation between coronal properties of Active Galactic Nuclei and the Eddington ratio
• The Soft-Excess in Mrk 509: Warm Corona or Relativistic Reflection?
• Testing the No-Hair Theorem with Observations of Black Holes in the Electromagnetic Spectrum
• The high-Eddington NLS1 Ark 564 has the coolest corona
• The variable hard X-ray emission of NGC4945 as observed by NuSTAR
• On high-energy particles in accretion disk coronae of supermassive black holes: implications for MeV gamma rays and high-energy neutrinos from AGN cores
• Determining the covering factor of Compton-thick active galactic nuclei with NuSTAR
• A comprehensive analysis of the hard X-ray spectra of bright Seyfert galaxies
• The dust sublimation radius as an outer envelope to the bulk of the narrow Fe Kalpha line emission in Type 1 AGN
• PAH features within few hundred parsecs of active galactic nuclei
• The hard X-ray spectrum of NGC 5506 as seen by NuSTAR
• ALMA HCN and HCO+ J=3-2 observations of optical Seyfert and luminous infrared galaxies -- Confirmation of elevated HCN-to-HCO+ flux ratios in AGNs --
• Detection of Coronal Magnetic Activity in Nearby Active Supermassive Black Holes
• Coronal Properties of the Seyfert 1.9 Galaxy MCG -05-23-016 Determined from Hard X-ray Spectroscopy with NuSTAR
• NuSTAR Reveals the Comptonizing Corona of the Broad-Line Radio Galaxy 3C 382
• NuSTAR, XMM-Newton and Suzaku Observations of the Ultraluminous X-ray Source Holmberg II X-1
• Improved spectral models for relativistic reflection
• On Estimating the High-Energy Cutoff in the X-ray Spectra of Black Holes via Reflection Spectroscopy
• Anatomy of the AGN in NGC 5548: III. The high-energy view with NuSTAR and INTEGRAL
• A Long Look At MCG-5-23-16 With NuSTAR: I- Relativistic Reflection And Coronal Properties
• High-energy monitoring of NGC 4593 with XMM-Newton and NuSTAR. X-ray spectral analysis
• Relations between phenomenological and physical parameters in the hot coronae of AGNs computed with the MoCA code
• Unveiling the Nature of Coronae in Active Galactic Nuclei through Sub-mm Observations
• Multi-wavelength campaign on NGC 7469 IV. The broad-band X-ray spectrum
• NuSTAR Hard X-ray View of Low-luminosity Active Galactic Nuclei: High-energy Cutoff and Truncated Thin Disk
• Fundamental X-ray Corona Parameters of Swift/BAT AGN
• Radiative heating in the kinetic mode of AGN feedback
• Relativistic Fe K alpha line study in Seyfert 1 galaxies observed with Suzaku
• Probing the nature and origin of dust in the reddened quasar IC 4329A with global modelling from X-ray to infrared
• Modelling X-ray RMS spectra I: intrinsically variable AGN
• Application of Clumpy Torus Model to Broadband X-ray Spectra of Two Seyfert 1 Galaxies: IC 4329A and NGC 7469
• NuSTAR observations of Mrk 766: distinguishing reflection from absorption
• Gamma-ray activity of Seyfert galaxies and constraints on hot accretion flows
• The infrared to X-ray correlation spectra of unobscured type 1 active galactic nuclei
• Correlation between relativistic reflection fraction and photon index in NuSTAR sample of Seyfert 1 AGN
• Gamma-ray and Neutrino Signals from Accretion Disk Coronae of Active Galactic Nuclei
• Investigating the interplay between the coronal properties and the hard X-ray variability of active galactic nuclei with NuSTAR
• Detection of the high energy cut-off from the Seyfert 1.5 galaxy NGC 5273
• Coronal properties of the Seyfert 1 galaxy 3C 120 with NuSTAR
• Energy-dependent variability of the bare Seyfert 1 galaxy Ark 120
• The coronal parameters of local Seyfert galaxies
• A catalog of optical to X-ray spectral energy distributions of z~2 quasars observed with Swift. I: First results
• AstroSat/UVIT observations of IC4329A: Constraining the accretion disc inner radius
• Revealing Thermal Comptonization of accretion-disk photons in IC4329A with AstroSat
• X-ray Spectral Analysis of the Steady States of GRS 1915+105
• Coronal properties of the luminous radio-quiet quasar QSO B2202$-$209
• Unwrapping the X-ray Spectra of Active Galactic Nuclei
• X-ray spectral and temporal analysis of Narrow Line Seyfert 1 galaxy Was 61
• XMM-Newton --NuSTAR monitoring campaign of the Seyfert 1 galaxy IC 4329A
• Universality of coronal properties in accreting black holes across mass and accretion rate
• On joint analysing XMM-NuSTAR spectra of active galactic nuclei
• The New Primary X-ray Component Confirmed in the Seyfert I Galaxy IC4329A
• High-energy monitoring of Seyfert galaxies: the case of NGC 4593
• AstroSat/UVIT far and near UV deep field around IC 4329A
• The extreme properties of the nearby hyper-Eddington accreting Active Galactic Nucleus in IRAS 04416+1215