A broadband X-ray spectral study of the Seyfert 1 galaxy ESO 141--G055 with XMM-Newton and NuSTAR

Abstract

We have extensively studied the broadband X-ray spectra of the source ESO~141--G055 using all available \xmm{} and \nustar{} observations. We detect a prominent soft excess below 2 keV, a narrow Fe line and a Compton hump (>10 keV). The origin of the soft excess is still debated. We used two models to describe the soft excess: the blurred reflection from the ionized accretion disk and the intrinsic thermal Comptonisation model. We find that both of these models explain the soft excess equally well. We confirm that we do not detect any broad Fe line in the X-ray spectra of this source, although both the physical models prefer a maximally spinning black hole scenario (a$>$0.96). This may mean that either the broad Fe line is absent or blurred beyond detection. The Eddington rate of the source is estimated to be ${\lambda }_{Edd}\sim 0.31$. In the reflection model, the Compton hump has a contribution from both ionized and neutral reflection components. The neutral reflector which simultaneously describes the narrow Fe K$\alpha$ and the Compton hump has a column density of ${\mathrm{N}}_{\mathrm{H}}\ge 7\times 10^{24}\mathrm{c}{\mathrm{m}}^{-2}$. In addition, we detect a partially covering ionized absorption with ionization parameter $\log \xi /\mathrm{ergcm}{\mathrm{s}}^{-1}$ = $0.1_{-0.1}^{+0.1}$ and column density ${\mathrm{N}}_{\mathrm{H}}=20.6_{-1.0}^{+1.0}\times 10^{22}\mathrm{c}{\mathrm{m}}^{-2}$ with a covering factor of $0.21_{-0.01}^{+0.01}$.

arXiv comment10 pages, 4 tables and 4 figures. Accepted in MNRAS

References in corpus (32)

• Correcting for the Effects of Interstellar Extinction
• Improved Reflection Models of Black-Hole Accretion Disks: Treating the Angular Distribution of X-rays
• Intrinsic disc emission and the Soft X-ray Excess in AGN
• An X-ray Spectral Model for Compton-Thick Toroidal Reprocessors
• An Explanation for the soft X-ray excess in AGN
• The X-ray to optical-UV luminosity ratio of X-ray selected Type 1 AGN in XMM-COSMOS
• X-ray reflected spectra from accretion disk models. I. Constant density atmospheres
• The lack of variability of the iron line in MCG-6-30-15: general relativistic effects
• The Nature of the Compton-thick X-ray Reprocessor in NGC 4945
• Multiwavelength campaign on Mrk 509 XII. Broad band spectral analysis
• Alternative explanations for extreme supersolar iron abundances inferred from the energy spectrum of Cygnus X-1
• Determination of the X-ray reflection emissivity profile of 1H 0707-495
• Fe-K line probing of material around the AGN central engine with Suzaku
• A deep X-ray view of the bare AGN Ark120. IV. XMM-Newton and NuSTAR spectra dominated by two temperature (warm, hot) Comptonization processes
• The Soft-Excess in Mrk 509: Warm Corona or Relativistic Reflection?
• Iron K$\alpha$ emission in type-I and type-II Active Galactic Nuclei
• Chandra High Energy Grating Observations of the Fe Ka Line Core in Type 2 Seyfert Galaxies: A Comparison with Type 1 Nuclei
• A comprehensive analysis of the hard X-ray spectra of bright Seyfert galaxies
• An XMM-Newton observation of Ark 120: the X-ray spectrum of a `bare' Seyfert 1 nucleus
• NuSTAR/XMM-Newton monitoring of the Seyfert 1 galaxy HE 1143-1810. Testing the two-corona scenario
• The narrow Fe K$\alpha$ line and the molecular torus in active galactic nuclei - an IR/X-ray view
• Reflected Iron Line From a Source Above a Kerr Black Hole Accretion Disc
• Broadband spectral study of the jet-disc emission in the radio-loud narrow-line Seyfert 1 galaxy 1H 0323+342
• Swift/XRT- NuSTAR spectra of type 1 AGN]{Swift/XRT- NuSTAR spectra of type 1 AGN: confirming INTEGRAL results on the high energy cut-off
• An X-ray view of central engines of low luminosity quasars (LLQSO) in the local Universe
• NuSTAR spectral analysis of two bright Seyfert 1 galaxies: MCG +8-11-11 and NGC 6814
• Study of X-ray variability and coronae of Seyfert galaxies using NuSTAR
• Multi-epoch X-ray spectral analysis of the narrow-line Seyfert 1 galaxy Mrk 478
• The nature of the soft-excess and spectral variability in the Seyfert 1 galaxy Zw 229.015
• Accretion disk/corona emission from a radio-loud narrow line Seyfert 1 galaxy PKS 0558-504
• Exploring the spectral variability of the Seyfert 1.5 galaxy Markarian 530 with Suzaku
• The coronal temperature of NGC 4388 and NGC 2110 measured with INTEGRAL

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