reXcor: A Model of the X-ray Spectrum of Active Galactic Nuclei that Combines Ionized Reflection and a Warm Corona

Abstract

The X-ray spectra of active galactic nuclei (AGNs) often exhibit an excess of emission above the primary power-law at energies <~ $2$ keV. Two models for the origin of this `soft excess' are ionized relativistic reflection from the inner accretion disc and Comptonization of thermal emission in a warm corona. Here, we introduce reXcor, a new AGN X-ray ($0.3$-$100$ keV) spectral fitting model that self-consistently combines the effects of both ionized relativistic reflection and the emission from a warm corona. In this model, the accretion energy liberated in the inner disc is distributed between a warm corona, a lamppost X-ray source, and the accretion disc. The emission and ionized reflection spectrum from the inner $400$ $r_g$ of the disc is computed, incorporating the effects of relativistic light-bending and blurring. The resulting spectra predict a variety of soft excess shapes and sizes that depend on the fraction of energy dissipated in the warm corona and lamppost. We illustrate the use of reXcor by fitting to the joint XMM-Newton and NuSTAR observations of the Seyfert 1 galaxies HE 1143-1820 and NGC 4593, and find that both objects require a warm corona contribution to the soft excess. Eight reXcor table models, covering different values of accretion rate, lamppost height and black hole spin, are publicly available through the XSPEC website. Systematic use of reXcor will provide insight into the distribution of energy in AGN accretion flows.

arXiv comment17 pages, 11 figures, accepted by MNRAS. The reXcor table models can be downloaded here: https://github.com/HEASARC/xspec_localmodels/tree/master/reXcor

References in corpus (56)

• 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
• The XMM-Newton Optical/UV Monitor Telescope
• A light bending model for the X-ray temporal and spectral properties of accreting black holes
• X-ray reflected spectra from accretion disk models. III. A complete grid of ionized reflection calculations
• Piecing Together the X-ray Background: Bolometric Corrections for Active Galactic Nuclei
• An Explanation for the soft X-ray excess in AGN
• The XMM-Newton view of PG quasars I. X-ray continuum and absorption
• Is the soft excess in AGN real?
• Irradiation of an Accretion Disc by a Jet: General Properties and Implications for Spin Measurements of Black Holes
• Simultaneous X-ray/optical/UV snapshots of active galactic nuclei from XMM-Newton: spectral energy distributions for the reverberation mapped sample
• Plasma Ejection from Magnetic Flares and the X-ray Spectrum of Cygnus X-1
• The close environments of accreting massive black holes are shaped by radiative feedback
• Suzaku observations of 'bare' active galactic nuclei
• Observational Constraints on Black Hole Spin
• Discovery of a relation between black hole mass and soft X-ray time lags in active galactic nuclei
• X-ray reflection spectra from ionized slabs
• CAIXA: a Catalogue of AGN In the XMM-Newton Archive I. Spectral analysis
• A physical model of the broadband continuum of AGN and its implications for the UV/X relation and optical variability
• A global look at X-ray time lags in Seyfert Galaxies
• Reverberation mapping of Active Galactic Nuclei: from X-ray corona to dusty torus
• Testing warm Comptonization models for the origin of the soft X-ray excess in AGN
• X-ray Reflection By Photoionized Accretion Discs
• Anatomy of the AGN in NGC 5548: I. A global model for the broadband spectral energy distribution
• Global Radiation Magneto-hydrodynamic Simulations of Sub-Eddington Accretion Disks around Supermassive Black Holes
• How the X-ray spectrum of a Narrow-Line Seyfert 1 galaxy may be reflection dominated
• On the size and location of the X-ray emitting coronae around black holes
• Multiwavelength campaign on Mrk 509 XII. Broad band spectral analysis
• Testing Comptonization models using BeppoSAX observations of Seyfert 1 galaxies
• High Density Reflection Spectroscopy: II. the Density of the Inner Black Hole Accretion Disc in AGN
• The Swift BAT-detected Seyfert 1 Galaxies: X-ray Broadband Properties and Warm Absorbers
• A deep X-ray view of the bare AGN Ark120. IV. XMM-Newton and NuSTAR spectra dominated by two temperature (warm, hot) Comptonization processes
• Radiation spectra of warm and optically thick coronae in AGN
• The Soft-Excess in Mrk 509: Warm Corona or Relativistic Reflection?
• The soft X-ray emission of Ark 120. XMM-Newton, NuSTAR, and the importance of taking the broad view
• Tomographic reflection modelling of quasi-periodic oscillations in the black hole binary H 1743-322
• The existence of warm and optically thick dissipative coronae above accretion disks
• The soft X-ray excess: NLS1s vs. BLS1s
• Revealing the accretion disc corona in Mrk 335 with multi-epoch X-ray spectroscopy
• NuSTAR/XMM-Newton monitoring of the Seyfert 1 galaxy HE 1143-1810. Testing the two-corona scenario
• High-energy monitoring of NGC 4593 with XMM-Newton and NuSTAR. X-ray spectral analysis
• Warm and thick corona for magnetically supported disk in GBHB
• The Nature of Soft Excess in ESO 362-G18 Revealed by XMM-Newton and NuSTAR Spectroscopy
• Multi-wavelength campaign on NGC 7469 IV. The broad-band X-ray spectrum
• The soft excess of the NLS1 galaxy Mrk 359 studied with an XMM-Newton-NuSTAR monitoring campaign
• High-energy monitoring of NGC 4593 II. Broadband spectral analysis: testing the two-corona model
• Examining the Physical Conditions of a Warm Corona in Active Galactic Nuclei Accretion Discs
• Detectability of low energy X-ray spectral components in type 1 AGN
• Accretion Disk Illumination in Schwarzschild and Kerr Geometries: Fitting Formulae
• Sustaining a Warm Corona in Active Galactic Nuclei Accretion Discs
• The first simultaneous X-ray broad-band view of Mrk 110 with XMM-Newton and NuSTAR
• An X-ray Spectral Analysis of the Central Regions of NGC 4593
• X-ray-binary spectra in the lamp post model
• The origin of the soft X-ray excess in the narrow-line Seyfert 1 galaxy SBS 1353+564
• Ionised Accretion Discs in Active Galactic Nuclei: The Effects of a Lamppost with a Variable Height
• A weakening Compton hump and soft X-ray excess detected in the Seyfert-1 galaxy MCG-02-58-22

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