The broad band spectral variability of MCG-6-30-15 observed by NuSTAR and XMM-Newton

Abstract

MCG-6-30-15, at a distance of 37 Mpc (z=0.008), is the archetypical Seyfert 1 galaxy showing very broad Fe K$\alpha$ emission. We present results from a joint NuSTAR and XMM-Newton observational campaign that, for the first time, allows a sensitive, time-resolved spectral analysis from 0.35 keV up to 80 keV. The strong variability of the source is best explained in terms of intrinsic X-ray flux variations and in the context of the light bending model: the primary, variable emission is reprocessed by the accretion disk, which produces secondary, less variable, reflected emission. The broad Fe K$\alpha$ profile is, as usual for this source, well explained by relativistic effects occurring in the innermost regions of the accretion disk around a rapidly rotating black hole. We also discuss the alternative model in which the broadening of the Fe K$\alpha$ is due to the complex nature of the circumnuclear absorbing structure. Even if this model cannot be ruled out, it is disfavored on statistical grounds. We also detected an occultation event likely caused by BLR clouds crossing the line of sight.

arXiv comment19 pages, 16 figures, accepted for publication on ApJ

References in corpus (64)

• The European Photon Imaging Camera on XMM-Newton: The MOS Cameras
• The Nuclear Spectroscopic Telescope Array (NuSTAR) Mission
• Constraining Black Hole Spin Via X-ray Spectroscopy
• 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
• An Explanation for the soft X-ray excess in AGN
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• Irradiation of an Accretion Disc by a Jet: General Properties and Implications for Spin Measurements of Black Holes
• A long hard look at MCG-6-30-15 with XMM-Newton
• Ubiquitous variability of X-ray absorbing column densities in Seyfert 2 Galaxies
• XMM-EPIC observation of MCG-6-30-15: Direct evidence for the extraction of energy from aspinning black hole?
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• A rapidly spinning supermassive black hole at the centre of NGC 1365
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• The variable iron K emission line in MCG-6-30-15
• Occultation measurement of the size of the X-ray emitting region in the Active Galactic Nucleus of NGC 1365
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• A long, hard look at MCG-6-30-15 with XMM-Newton II: detailed EPIC analysis and modelling
• Evidence for a multizone warm absorber in the XMM-Newton spectrum of Markarian 304
• The iron line in MCG-6-30-15 from XMM-Newton: evidence for gravitational light-bending?
• An absorption origin for the X-ray spectral variability of MCG-6-30-15
• Suzaku observations of the hard X-ray variability of MCG-6-30-15: the effects of strong gravity around a Kerr black hole
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• Soft X-ray emission lines from a relativistic accretion disk in MCG -6-30-15 and Mrk 766
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• The variable X-ray spectrum of Markarian 766 - I. Principal components analysis
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• Evidence for Rapid Iron K_alpha Line Flux Variability in MCG--6-30-15
• The X-ray variability of the Seyfert~1 galaxy MCG-6-30-15 from long ASCA and RXTE observations
• Fe K Emission and Absorption in the XMM-EPIC Spectrum of the Seyfert Galaxy IC 4329a
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• A Chandra HETGS Spectral Study of the Iron K Bandpass in MCG-6-30-15: A Narrow View of the Broad Iron Line
• The XMM-Newton view of AGN with intermediate mass black holes
• The variable OVIII Warm Absorber in MCG-6-30-15
• Can a Dusty Warm Absorber Model Reproduce the Soft X-ray Spectra of MCG-6-30-15 and Mrk 766?
• The continuum variability of MCG--6-30-15: A detailed analysis of the long 1999 ASCA observation
• The Variable X-ray Spectrum of Markarian 766 - II. Time-Resolved Spectroscopy
• The absorption-dominated model for the X-ray spectra of type I active galaxies: MCG-6-30-15
• A two-component ionized reflection model of MCG--6-30-15
• The shape of the relativistic iron K-alpha line from MCG6--6-30-15 measured with the Chandra HETGS and RXTE
• First Constraints on Iron Abundance versus Reflection Fraction from the Seyfert~1 Galaxy MCG--6-30-15
• The size of the X-ray emitting region in SWIFT J2127.4+5654 via a broad line region cloud X-ray eclipse
• The soft X-ray absorption lines of the Seyfert 1 galaxy MCG--6-30-15
• A softer look at MCG--6-30-15 with XMM-Newton
• Modelling the Broad-band Spectra of MCG-6-30-15 with a Relativistic Reflection Model
• Principal Component Analysis of MCG--6-30-15 with XMM-Newton
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• Probing general relativistic effects during AGN X-ray eclipses
• Suzaku Discovery of a Hard Component Varying Independently of the Power-Law Emission in MCG-6-30-15
• Exploring the X-ray spectral variability of MCG-6-30-15 with XMM-Newton

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