XMM-Newton observations of the Lockman Hole: III. A relativistic Fe line in the mean X-ray spectra of type-1 and type-2 AGN

Abstract

Using the 770 ksec XMM-Newton survey of the Lockman Hole field in combination with extensive optical identifications of the AGN population, we derive an average rest-frame spectrum of AGN types-1 and 2. The most prominent feature in the averaged spectrum is a strong fluorescent Fe line. In both type-1 and type-2 AGN, a clear relativistic line profile is rev ealed. A laor line profile with an inner disk radius smaller than the last stabl e orbit of a Schwarzschild black hole is most consistent with the data, indicati ng that the average supermassive black hole has significant spin. Equivalent wid ths of the broad relativistic lines range between 400--600 eV. We used the disk reflection model to compare the observed strength of the line with the amplitude of the reflection component, concluding that to consistently describe the observations the average iron abundance should be about three times the solar value.

arXiv comment6 pages, 5 figures, submitted for publication in A&A

References in corpus (20)

• Local Supermassive Black Holes, Relics of Active Galactic Nuclei and the X-ray Background
• Observational constraints on growth of massive black holes
• ASCA observations of Seyfert 1 galaxies: II. Relativistic Iron K-alpha emission
• Broad iron lines in Active Galactic Nuclei
• A long hard look at MCG-6-30-15 with XMM-Newton
• XMM-EPIC observation of MCG-6-30-15: Direct evidence for the extraction of energy from aspinning black hole?
• Most Supermassive Black Holes must be Rapidly Rotating
• An extended scheme for fitting X-ray data with accretion disk spectra in the strong gravity regime
• XMM-Newton observation of the Lockman Hole II. Spectral analysis
• Black hole mass and spin coevolution by mergers
• Testing current synthesis models of the X-ray background
• The ROSAT Deep Survey: VI. X-ray sources and Optical identifications of the Ultra Deep Survey
• How the X-ray spectrum of a Narrow-Line Seyfert 1 galaxy may be reflection dominated
• Where is the Inner Edge of an Accretion Disk Around a Black Hole?
• The spectrum of the cosmic X-ray background observed by RTXE/PCA
• The (un)resolved X-ray background in the Lockman Hole
• The X-ray Background and AGNs
• Partial Covering Interpretation of the X-Ray Spectrum of the NLS1 1H 0707-495
• XMM-Newton spectral properties of the Narrow-Line Seyfert 1 galaxy IRAS 13224--3809
• The reprocessing features in the X-ray spectrum of the NELG MCG-5-23-16

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