Unveiling the broad band X-ray continuum and iron line complex in Mkr 841

Abstract

Mkr 841 is a bright Seyfert 1 galaxy known to harbor a strong soft excess and a variable K$\alpha$ iron line. It has been observed during 3 different periods by XMM for a total cumulated exposure time of $\sim$108 ks. We present in this paper a broad band spectral analysis of the complete EPIC-pn data sets. We were able to test two different models for the soft excess, a relativistically blurred photoionized reflection (\r model) and a relativistically smeared ionized absorption (\a model). The continuum is modeled by a simple cut-off power law and we also add a neutral reflection. These observations reveal the extreme and puzzling spectral and temporal behaviors of the soft excess and iron line. The 0.5-3 keV soft X-ray flux decreases by a factor 3 between 2001 and 2005 and the line shape appears to be a mixture of broad and narrow components. We succeed in describing this complex broad-band 0.5-10 keV spectral variability using either \r or \a to fit the soft excess. Both models give statistically equivalent results even including simultaneous BeppoSAX data up to 200 keV. Both models are consistent with the presence of remote reflection characterized by a constant narrow component in the data. However they differ in the presence of a broad line component present in \r but not needed in \a. This study also reveals the sporadic presence of relativistically redshifted narrow iron lines.

arXiv commentAccepted in A&A. 17 pages and 21 figures

References in corpus (30)

• A light bending model for the X-ray temporal and spectral properties of accreting black holes
• An Explanation for the soft X-ray excess in AGN
• The Updated Zwicky Catalog (UZC)
• Is the soft excess in AGN real?
• A Model for the X-Ray and UV Emission from Seyfert Galaxies and Galactic Black Holes
• The lack of variability of the iron line in MCG-6-30-15: general relativistic effects
• X-ray reflection in the NLS1 1H 0707-495
• XMM-Newton study of the complex and variable spectrum of NGC 4051
• Universal spectral shape of high accretion rate AGN
• The XMM-Newton Iron Line Profile of NGC 3783
• Observations of Seyferts by OSSE and parameters of their X-ray/gamma-ray sources
• Flux and energy modulation of redshifted iron emission in NGC3516: implications for the black hole mass
• Effects of Kerr Spacetime on Spectral Features from X-Ray Illuminated Accretion Discs
• Mapping the inner regions of MCG-6-30-15 with XMM-Newton
• Relativistic spectral features from X-ray illuminated spots and the measure of the black hole mass in AGN
• XMM-Newton observation of the Seyfert 1.8 ESO 113-G010: discovery of a highly redshifted iron line at 5.4 keV
• Energy-dependent variability and the origin of the soft X-ray excess in AGN
• The role of absorption and reflection in the soft X-ray excess of Active Galactic Nuclei : 1. Preliminary results
• A rapidly variable narrow X-ray iron line in Mkn 841
• What is the origin of the soft excess in AGN?
• Transient Relativistically-Shifted Lines as a Probe of Black Hole Systems
• On the X-ray spectra of luminous, inhomogeneous accretion flows
• XMM-Newton observations of seven soft X-ray excess QSOs
• Failed disk winds; a physical origin for the soft X-ray excess?
• BeppoSAX observations of Mrk 841 and Mrk335
• On the variability of the iron line in Mrk 841
• The relativistic shift of narrow spectral features from black-hole accretion discs
• A prominent relativistic iron line in the Seyfert 1 MCG-02-14-009
• Exploring the X-ray spectral variability of MCG-6-30-15 with XMM-Newton
• The broad band spectrum and variability of Seyfert 1

Cited by in corpus (24)

• Evidence for ultra-fast outflows in radio-quiet AGNs: I - detection and statistical incidence of Fe K-shell absorption lines
• An XMM-Newton survey of broad iron lines in Seyfert galaxies
• Suzaku observations of 'bare' active galactic nuclei
• X-ray Spectral Properties of the BAT AGN Sample
• CAIXA: a catalogue of AGN in the XMM-Newton archive III. Excess Variance Analysis
• The subarcsecond mid-infrared view of local active galactic nuclei: II. The mid-infrared--X-ray correlation
• Relativistic disc reflection in the extreme NLS1 IRAS13224-3809
• XMM-Newton Survey of Local O VII Absorption Lines in the Spectra of Active Galactic Nuclei
• Does the obscured AGN fraction really depend on luminosity?
• The Seyfert AGN RX J0136.9-3510 and the Spectral State of Super Eddington Accretion Flows
• On the evidence for narrow, relativistically shifted X-ray lines
• High resolution X-ray spectroscopy of the Seyfert 1 Mrk841: insights into the warm absorber and warm emitter
• X-ray spectral variability in PG1535+547: the changing-look of a 'soft X-ray weak' AGN
• The broad-band XMM-Newton and INTEGRAL spectra of bright type 1 Seyfert galaxies
• XMM-Newton and Suzaku analysis of the Fe K complex in the Seyfert 1 galaxy Mrk 509
• Probing variability patterns of the Fe K line complex in bright nearby AGNs
• A deep X-ray view of the bare AGN Ark 120. II. Evidence for Fe K emission transients
• The lively accretion disk in NGC 2992. I. Transient iron K emission lines in the high flux state
• Suzaku broad-band observations of the Seyfert 1 galaxies Mrk 509 and Mrk 841
• Multiwavelength campaign on Mrk 509: Reverberation of the Fe Kalpha line
• Dimming of Continuum Captured in Mrk 841: New Clues on the Nature of the Soft X-ray Excess
• Nuclear X-ray properties of the peculiar radio-loud hidden AGN 4C+29.30
• INTEGRAL observations of the GeV blazar PKS1502+106 and of the hard X-ray bright Seyfert Galaxy Mkn841
• An extreme gravitationally redshifted iron line at 4.8 keV in Mrk 876