The Variable X-ray Spectrum of Markarian 766 - II. Time-Resolved Spectroscopy

Abstract

CONTEXT: The variable X-ray spectra of AGN systematically show steep power-law high states and hard-spectrum low states. The hard low state has previously been found to be a component with only weak variability. The origin of this component and the relative importance of effects such as absorption and relativistic blurring are currently not clear. AIMS: In a follow-up of previous principal components analysis, we aim to determine the relative importance of scattering and absorption effects on the time-varying X-ray spectrum of the narrow-line Seyfert 1 galaxy Mrk~766. METHODS: Time-resolved spectroscopy, slicing XMM and Suzaku data down to 25 ks elements, is used to investigate whether absorption or scattering components dominate the spectral variations in Mrk 766.Time-resolved spectroscopy confirms that spectral variability in Mrk 766 can be explained by either of two interpretations of principal components analysis. Detailed investigation confirm rapid changes in the relative strengths of scattered and direct emission or rapid changes in absorber covering fraction provide good explanations of most of the spectral variability. However, a strong correlation between the 6.97 keV absorption line and the primary continuum together with rapid opacity changes show that variations in a complex and multi-layered absorber, most likely a disk wind, are the dominant source of spectral variability in Mrk 766

References in corpus (13)

• ASCA observations of Seyfert 1 galaxies: II. Relativistic Iron K-alpha emission
• The Spectrum of Diffuse Cosmic Hard X-Rays Measured with HEAO-1
• Photoionization Modeling and the K Lines of Iron
• Compton reflection and iron fluorescence in BeppoSAX observations of Seyfert type 1 galaxies
• A long, hard look at MCG-6-30-15 with XMM-Newton II: detailed EPIC analysis and modelling
• The XMM-Newton Iron Line Profile of NGC 3783
• The variable X-ray spectrum of Markarian 766 - I. Principal components analysis
• Testing the Seyfert Unification Theory: Chandra HETGS Observations of NGC 1068
• Simultaneous Ultraviolet and X-ray Observations of the Seyfert Galaxy NGC 4151. I. Physical Conditions in the X-ray Absorbers
• Complex X-ray Absorption and the Fe Kalpha Profile in NGC 3516
• Evidence for Orbital Motion of Material Close to the Central Black Hole of Mrk 766
• Variable iron-line emission near the black hole of Markarian 766
• An XMM-Newton observation of the Seyfert 1 galaxy 1H 0419-577 in an extreme low state

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• The Suzaku view of highly-ionised outflows in AGN: I - Statistical detection and global absorber properties
• Evidence for ultra-fast outflows in radio-quiet AGNs: II - detailed photo-ionization modeling of Fe K-shell absorption lines
• A Combined Optical and X-ray Study of Unobscured Type 1 AGN. I. Optical Spectra and SED Modeling
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• The Swift BAT-detected Seyfert 1 Galaxies: X-ray Broadband Properties and Warm Absorbers
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• The impact of accretion disk winds on the X-ray spectrum of AGN: Part 2 - XSCORT + Hydrodynamic Simulations
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• A remarkable long-term light curve, and deep, low-state spectroscopy: Swift & XMM-Newton monitoring of the NLS1 galaxy Mkn 335
• Assessing black hole spin in deep Suzaku observations of Seyfert 1 AGN
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• Searching for Ultra-fast Outflows in AGN using Variability Spectra
• Suzaku Observation of a Hard Excess in 1H 0419-577: Detection of a Compton-Thick Partial-Covering Absorber
• Revealing the X-ray Variability of AGN with Principal Component Analysis
• Does the obscured AGN fraction really depend on luminosity?
• Super-Eddington QSO RX J0439.6-5311. II. Multi-wavelength Constraints on the Global Structure of the Accretion Flow
• Super-Eddington QSO RX J0439.6-5311. I. Origin of the Soft X-ray Excess and Structure of the Inner Accretion Flow
• UV line driven disc wind as the origin of ultrafast outflows in AGN
• The Global Implications of the Hard X-ray Excess in Type 1 AGN
• A Quasar Catalog with Simultaneous UV, Optical and X-ray Observations by Swift
• The role of the Gamma-Eddington ratio relation on the X-ray Baldwin effect in Active Galactic Nuclei
• Long Term Wind-Driven X-Ray Spectral Variability of NGC 1365 with Swift
• A correlation between the spectral and timing properties of AGN
• Probing general relativistic effects during AGN X-ray eclipses
• Synthetic X-ray spectra for simulations of the dynamics of an accretion flow irradiated by a quasar
• The hard X-ray perspective on the soft X-ray excess
• Analysis of X-ray spectral variability and black hole mass determination of the NLS1 galaxy Mrk 766
• The hard X-ray spectrum of NGC 1365: scattered light, not black hole spin
• NuSTAR observations of Mrk 766: distinguishing reflection from absorption
• Decoupling absorption and continuum variability in the Seyfert 2 NGC 4507
• The Extreme Super-Eddington NLS1 RX J0134.2-4258 -- II. A Weak-Line Seyfert Linking to the Weak-Line Quasar
• XMM-Newton long-look observation of the narrow line Seyfert 1 galaxy PKS0558-504; I: Spectral analysis
• Fourier-resolved energy spectra of the Narrow Line Seyfert 1 Mkn 766
• X-ray spectral variability of blazars using principal component analysis
• On the presence of ultra-fast outflows in the WAX sample of Seyfert galaxies
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• Origin of X-rays in the low state of the FSRQ 3C 273: Evidence of inverse Compton emission
• Multi-wavelength Campaign on the Super-Eddington NLS1 RX J0134.2-4258 -- I. Peculiar X-ray Spectra and Variability
• Uncovering the primary X-ray emission and possible starburst component in the polarized NLS1 Mrk 1239
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• The nature of X-ray spectral variability in MCG-6-30-15
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• Relativistic Reflection Modeling in AGN and Related Variability from PCA: A Brief Review
• Eclipsing the innermost X-ray emitting regions in AGN
• A Systematic Study of the Short-Term X-ray Variability of Seyfert Galaxies I. Diversity of the X-ray Rms Spectra
• Investigating the complex absorbers of Mrk 766 with XMM-Newton