Variation of the broad X-ray iron line in MCG-6-30-15 during a flare

Abstract

We report results on the broad iron emission line of the Seyfert galaxy MCG-6-30-15, obtained from the second long ASCA observation in 1997. The time-averaged profile of the broad line is very similar to that seen with ASCA in 1994, so confirming the detailed model fit then obtained. A bright flare is seen in the light curve, during which the continuum was soft. At that time the emission line peaks around 5 keV and most of its emission is shifted below 6 keV with no component detected at 6.4 keV (EW<60 eV). This can be interpreted as the result of an extraordinarily large gravitational redshift due to a dominant flare occurring very close to the black hole at a radius of <5m.

5 pages, accepted or publication in MNRAS Letters

Cited by in corpus (68)

• An XMM-Newton survey of broad iron lines in Seyfert galaxies
• X-ray reflected spectra from accretion disk models. I. Constant density atmospheres
• Evidence for Spin and Energy Extraction in a Galactic Black Hole Candidate: The XMM-Newton/EPIC-pn Spectrum of XTE J1650-500
• A long, hard look at MCG-6-30-15 with XMM-Newton II: detailed EPIC analysis and modelling
• The iron line in MCG-6-30-15 from XMM-Newton: evidence for gravitational light-bending?
• Suzaku observations of the hard X-ray variability of MCG-6-30-15: the effects of strong gravity around a Kerr black hole
• Physical Diagnostics from a Narrow Fe-Kalpha Emission Line Detected by Chandra in the Seyfert 1 Galaxy NGC 5548
• Evidence for Black Hole Spin in GX 339-4: XMM-Newton EPIC-pn and RXTE Spectroscopy of the Very High State
• Narrow Components within the Fe Kalpha Profile of NGC 3516: Evidence for the Importance of General Relativistic Effects?
• The properties of the relativistic iron K-line in NGC 3516
• The Origin of the X-ray and Ultraviolet Emission in NGC 7469
• Long-Term X-ray Spectral Variability in Seyfert 1 Galaxies
• X-Ray and Optical Microlensing in the Lensed Quasar PG 1115+080
• Resolving the Composite Fe K-alpha Emission Line in the Galactic Black Hole Cygnus X-1 with Chandra
• Flux and energy modulation of redshifted iron emission in NGC3516: implications for the black hole mass
• The broad band spectral variability of MCG-6-30-15 observed by NuSTAR and XMM-Newton
• Evidence for Rapid Iron K_alpha Line Flux Variability in MCG--6-30-15
• Fe K Emission and Absorption in the XMM-EPIC Spectrum of the Seyfert Galaxy IC 4329a
• A Chandra HETGS Spectral Study of the Iron K Bandpass in MCG-6-30-15: A Narrow View of the Broad Iron Line
• Fe XXV and Fe XXVI Diagnostics of the Black Hole and Accretion Disk in Active Galaxies: Chandra Time-Resolved Spectroscopy of NGC 7314
• The continuum variability of MCG--6-30-15: A detailed analysis of the long 1999 ASCA observation
• An intermediate black hole spin in the NLS1 galaxy SWIFT J2127.4+5654: chaotic accretion or spin energy extraction?
• Probing the Disk-jet Connection of the Radio Galaxy 3C120 Observed with Suzaku
• A two-component ionized reflection model of MCG--6-30-15
• First Constraints on Iron Abundance versus Reflection Fraction from the Seyfert~1 Galaxy 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
• A Relativistic Fe K-alpha Emission Line in the Intermediate Luminosity BeppoSAX Spectrum of the Galactic Microquasar V4641 Sgr
• Magnetic fields in AGNs and microquasars
• Relativistic Iron Emission and Disk Reflection in Galactic Microquasar XTE J1748-288
• Discovery of a relativistic Fe line in PG 1425+267 with XMM--Newton and study of its short-timescale variability
• Reprocessed emission from warped accretion discs with application to X-ray iron line profiles
• On variability and spectral distortion of the fluorescent iron lines from black-hole accretion discs
• Reflected Iron Line From a Source Above a Kerr Black Hole Accretion Disc
• Variable line profiles due to non-axisymmetric patterns in an accretion disc around a rotating black hole
• On the hard X-ray spectra of radio-loud active galaxies
• The influence of microlensing on the shape of the AGN Fe K-alpha line
• Fe K_alpha line: A tool to probe massive binary black holes in Active Galactic Nuclei?
• Implications of the X-ray Variability for the Mass of MCG-6-30-15
• On the influence of resonant absorption on the iron emission line profiles from accreting black holes
• The hard X-ray spectrum of the Seyfert galaxy IRAS 18325-5926: cool corona, reflection from an ionized disk and variable iron K emission
• The unique rapid variabilities of the iron K$\alpha$ line profiles in NGC 4151
• The response of the Fe Kαline to changes in the X-ray illumination of accretion discs
• Monitoring the Violent Activity from the Inner Accretion Disk of the Seyfert 1.9 Galaxy NGC 2992 with RXTE
• Testing the performance and accuracy of the RELXILL model for the relativistic X-ray reflection from accretion disks
• The effects of relativistic bulk motion of X-ray flares in the corona on the iron Kalpha line in Seyfert 1 galaxies
• Where is a Marginally Stable Last Circular Orbit in Super-Critical Accretion Flow?
• Iron lines from transient and persisting hot spots on AGN accretion disks
• Iron line profiles from black hole accretion discs with spiral velocity structure
• The lively accretion disk in NGC 2992. I. Transient iron K emission lines in the high flux state
• Iron K line Variability in the Low-Luminosity AGN NGC 4579
• A long hard look at MCG-6-30-15 with XMM-Newton and BeppoSAX
• Estimation of relativistic accretion disk parameters from iron line emission
• Iron lines in model disk spectra of galactic black hole binaries
• On the Prospect of Constraining Black-Hole Spin Through X-ray Spectroscopy of Hotspots
• Spectral Variation of the Seyfert 1 Galaxy MCG-6-30-15 observed with Suzaku
• Broad Iron Lines in AGN and X-ray Binaries
• The final verdict by XMM-Newton: the X-ray obscured Seyfert galaxy NGC5506 has a broad Fe K-alpha line
• Constraining the KRZ deformation parameters I: limits from supermassive black hole X-ray data
• The iron $K_{\alpha }$ lines as a tool for magnetic field estimations in non-flat accretion flows
• Relativistic ionized accretion disc models of MCG--6-30-15
• The coronal parameters of local Seyfert galaxies
• Fourier-Resolved Spectroscopy of AGN using XMM-Newton data: I. The 3-10 keV band results
• Iron Fluorescent Line Emission from Black Hole Accretion Disks with Magnetic Reconnection-Heated Corona
• The nature of X-ray spectral variability in MCG-6-30-15
• Atomic X-ray Spectroscopy of Accreting Black Holes
• The narrow-line quasar NAB 0205+024 observed with XMM-Newton
• A two zone model for the broad Iron line emission in MCG-6-30-15
• Inferring the coronal flaring patterns in AGN from reverberation maps