High-energy monitoring of NGC 4593 II. Broadband spectral analysis: testing the two-corona model

Abstract

It is widely believed that the primary X-ray emission of AGN is due to the Comptonisation of optical-UV photons from a hot electron corona, while the origin of the 'soft-excess' is still uncertain and matter of debate. A second Comptonisation component, called warm corona, was therefore proposed to account for the soft-excess, and found in agreement with the optical-UV to X-ray emission of a sample of Seyfert galaxies. In this context, we exploit the broadband XMM-Newton and NuSTAR simultaneous observations of the Seyfert galaxy NGC 4593 to further test the so called "two corona model". The NGC 4593 spectra are well reproduced by the model, from the optical/UV to the hard X-rays. Moreover, the data reveal a significant correlation between the hot and the warm corona parameters during our monitoring campaign.

arXiv comment11 pages, 11 figures. Accepted for publication in MNRAS

References in corpus (50)

• Measuring Reddening with SDSS Stellar Spectra and Recalibrating SFD
• 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 European Photon Imaging Camera on XMM-Newton: The MOS Cameras
• On characterising the variability properties of X-ray light curves from active galaxies
• Broad-band gamma-ray and X-ray spectra of NGC 4151 and their implications for physical processes and geometry
• Improved Reflection Models of Black-Hole Accretion Disks: Treating the Angular Distribution of X-rays
• The XMM-Newton Optical/UV Monitor Telescope
• Active Galactic Nuclei as scaled-up Galactic black holes
• Intrinsic disc emission and the Soft X-ray Excess in AGN
• The May 1989 outburst of the Soft X-ray Transient GS 2023+338 (V404 Cyg)
• ASCA observations of Seyfert 1 galaxies: II. Relativistic Iron K-alpha emission
• 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?
• The 2013 Release of Cloudy
• A Model for the X-Ray and UV Emission from Seyfert Galaxies and Galactic Black Holes
• A physical model of the broadband continuum of AGN and its implications for the UV/X relation and optical variability
• CAIXA: a Catalogue of AGN In the XMM-Newton Archive I. Spectral analysis
• CAIXA: a catalogue of AGN in the XMM-Newton archive III. Excess Variance Analysis
• Testing warm Comptonization models for the origin of the soft X-ray excess in AGN
• A Combined Optical and X-ray Study of Unobscured Type 1 AGN. I. Optical Spectra and SED Modeling
• Normalizing a Relativistic Model of X-ray Reflection: The Definition of the Reflection Fraction and its Implementation in relxill
• Anatomy of the AGN in NGC 5548: I. A global model for the broadband spectral energy distribution
• Evidence for a multizone warm absorber in the XMM-Newton spectrum of Markarian 304
• Multiwavelength campaign on Mrk 509 XII. Broad band spectral analysis
• The Mass of the Black Hole in the Seyfert 1 Galaxy NGC 4593 from Reverberation Mapping
• Properties of AGN coronae in the NuSTAR era II: hybrid plasma
• A NuSTAR census of coronal parameters in Seyfert galaxies
• Reverberation Mapping of Optical Emission Lines in Five Active Galaxies
• A deep X-ray view of the bare AGN Ark120. IV. XMM-Newton and NuSTAR spectra dominated by two temperature (warm, hot) Comptonization processes
• The INTEGRAL high energy cut-off distribution of type 1 AGN
• Reverberation Mapping of the Seyfert 1 Galaxy NGC 7469
• The existence of warm and optically thick dissipative coronae above accretion disks
• Black hole masses from power density spectra: determinations and consequences
• The INTEGRAL Complete Sample of Type 1 AGN
• Hard X-ray spectra of AGN in the INTEGRAL complete sample
• Black hole mass estimation from X-ray variability measurements in AGN
• Multiwavelength campaign on Mrk 509. I. Variability and spectral energy distribution
• Anatomy of the AGN in NGC 5548 VIII. XMM-Newton's EPIC detailed view of an unexpected variable multilayer absorber
• A Long Observation of NGC 5548 by BeppoSAX: the High Energy Cut-off, Intrinsic Spectral Variability and a Truly Warm Absorber
• Anatomy of the AGN in NGC 5548: III. The high-energy view with NuSTAR and INTEGRAL
• High-energy monitoring of NGC 4593 with XMM-Newton and NuSTAR. X-ray spectral analysis
• Multi-wavelength campaign on NGC 7469 IV. The broad-band X-ray spectrum
• XMM-Newton observations of seven soft X-ray excess QSOs
• Detectability of low energy X-ray spectral components in type 1 AGN
• Multi-wavelength campaign on NGC7469 I. The rich 640 ks RGS spectrum
• NuSTAR + XMM-Newton monitoring of the neutron star transient AX J1745.6-2901
• Radio/X-ray monitoring of the broad-line radio galaxy 3C 382. High-energy view with XMM-Newton and NuSTAR
• The complex iron line in NGC 7469 observed by BeppoSAX
• The Origin of the soft excess in AGN

Cited by in corpus (23)

• Radiation spectra of warm and optically thick coronae in AGN
• NuSTAR/XMM-Newton monitoring of the Seyfert 1 galaxy HE 1143-1810. Testing the two-corona scenario
• CLOUDY view of the warm corona
• The soft excess of the NLS1 galaxy Mrk 359 studied with an XMM-Newton-NuSTAR monitoring campaign
• Testing the disk-corona interplay in radiatively-efficient broad-line AGN
• Optical and mid-infrared line emission in nearby Seyfert galaxies
• reXcor: A Model of the X-ray Spectrum of Active Galactic Nuclei that Combines Ionized Reflection and a Warm Corona
• The first broadband X-ray view of the narrow line Seyfert 1 Ton S180
• 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
• Estimating the size of X-ray lamppost coronae in active galactic nuclei
• Inferring black hole spins and probing accretion/ejection flows in AGNs with the Athena X-ray Integral Field Unit
• A Full Characterisation of the Supermassive Black Hole in IRAS 09149-6206
• NuSTAR hard X-ray spectra of radio galaxies
• The nature of the soft-excess and spectral variability in the Seyfert 1 galaxy Zw 229.015
• Distinct High Energy Cutoff Variation Patterns in Two Seyfert Galaxies
• The coronal temperature of NGC 4388 and NGC 2110 measured with INTEGRAL
• Fundamental Reference AGN Monitoring Experiment (FRAMEx) III: Radio Emission in the Immediate Vicinity of Radio Quiet AGNs
• Disc wind or disc line? The extraordinary Fe-K feature of Mrk 1513
• On joint analysing XMM-NuSTAR spectra of active galactic nuclei
• A possible two-fold scenario for the disc-corona of the luminous AGN 1H 0419--577: a high-density disc or a warm corona
• Modelling the energy dependent X-ray variability of Mrk 335
• The X-ray coronae in NuSTAR bright active galactic nuclei