Broadband X-ray Spectral Analysis of the Double-Nucleus Luminous Infrared Galaxy Mrk 463

Abstract

We present a broadband (0.4-70 keV) X-ray spectral analysis of the luminous infrared galaxy (LIRG) system Mrk 463 observed with Nuclear Spectroscopic Telescope Array (NuSTAR), Chandra, and XMM-Newton, which contains double active galactic nuclei (AGNs) (Mrk 463E and Mrk 463W) with a separation of $\sim$ 3.8 kpc. Detecting their transmitted hard X-ray $>10$ keV continua with NuSTAR, we confirm that Mrk 463E and Mrk 463W have AGNs with intrinsic luminosities of (1.6-2.2) $\times 10^{43}$ and (0.5-0.6) $\times 10^{43}$ erg s${}^{-1}$ (2-10 keV) obscured by hydrogen column densities of 8 $\times 10^{23}$ and 3 $\times 10^{23}$ cm${}^{-2}$, respectively. Both nuclei show strong reflection components from cold matter. The luminosity ratio between X-ray (2-10 keV) and [O IV] 25.89 $\mu$m of Mrk 463E is $\sim$5 times smaller than those of normal Seyfert galaxies, suggesting that the intrinsic SED is X-ray weak relative to the UV luminosity. In fact, the bolometric AGN luminosity of Mrk 463E estimated from $L^{\prime }$-band (3.8 $\mu$m), [O IV] 25.89 $\mu$m, and [Ne V] 14.32 $\mu$m lines indicate a large bolometric-to-X-ray luminosity ratio, ${\kappa }_{2-10keV}\approx$ 110-410, and a high Eddington ratio, ${\lambda }_{\mathrm{Edd}}\sim$ 0.4-0.8. We suggest that the merger triggered a rapid growth of the black hole in Mrk 463E, which is not yet deeply "buried" by circumnuclear dust. By contrast, the $L^{\prime }$-band luminosity of Mrk 463W is unusually small relative to the X-ray luminosity, suggesting that the Eddington ratio is low ($<10^{-3}$) and it might be still in an early phase of merger-driven AGN activity.

arXiv comment10 pages, 10 figures, (accepted in the Astrophysical Journal, ApJ)

References in corpus (43)

• Coevolution (Or Not) of Supermassive Black Holes and Host Galaxies
• The Leiden/Argentine/Bonn (LAB) Survey of Galactic HI: Final data release of the combined LDS and IAR surveys with improved stray-radiation corrections
• The European Photon Imaging Camera on XMM-Newton: The MOS Cameras
• The Nuclear Spectroscopic Telescope Array (NuSTAR) Mission
• Collisional Plasma Models with APEC/APED: Emission Line Diagnostics of Hydrogen-like and Helium-like Ions
• Gasdynamics and Starbursts in Major Mergers
• A Cosmological Framework for the Co-Evolution of Quasars, Supermassive Black Holes, and Elliptical Galaxies: I. Galaxy Mergers & Quasar Activity
• Nuclear Activity in Nearby Galaxies
• An Overview of the Performance and Scientific Results from the Chandra X-Ray Observatory (CXO)
• Discovery of a binary AGN in the ultraluminous infrared galaxy NGC 6240 using Chandra
• An XMM-Newton survey of broad iron lines in Seyfert galaxies
• The 2-10 keV luminosity as a Star Formation Rate indicator
• Piecing Together the X-ray Background: Bolometric Corrections for Active Galactic Nuclei
• Spitzer Quasar and ULIRG Evolution Study (QUEST). IV. Comparison of 1-Jy Ultraluminous Infrared Galaxies with Palomar-Green Quasars
• The Relationship of Hard X-ray and Optical Line Emission in Low Redshift Active Galactic Nuclei
• Understanding Dual AGN Activation in the Nearby Universe
• The soft X-ray/NLR connection: a single photoionized medium?
• Growing supermassive black holes in the late stages of galaxy mergers are heavily obscured
• Chandra unveils a binary Active Galactic Nucleus in Mrk463
• C-GOALS: Chandra observations of a complete sample of luminous infrared galaxies from the IRAS Revised Bright Galaxy Survey
• Galaxy Collisions
• Chandra Discovery of a Binary Active Galactic Nucleus in Mrk 739
• Study on X-ray Spectra of Obscured AGNs based on Monte Carlo simulation - an interpretation of observed wide-band spectra
• Observations of Ultraluminous Infrared Galaxies with the Infrared Spectrograph on the Spitzer Space Telescope: Early Results on Mrk 1014, Mrk 463, and UGC 5101
• The Discovery of an Active Galactic Nucleus in the Late-type Galaxy NGC 3621: Spitzer Spectroscopic Observations
• Calibration of [O IV] 26 micron as a Measure of Intrinsic AGN Luminosity
• A Close Nuclear Black Hole Pair in the Spiral Galaxy NGC 3393
• The X-ray emission of local luminous infrared galaxies
• Are X-ray Emitting Coronae around Super Massive Black Holes Outflowing?
• The dust sublimation radius as an outer envelope to the bulk of the narrow Fe Kalpha line emission in Type 1 AGN
• A Chandra X-Ray Survey of Ultraluminous Infrared Galaxies
• A view of the narrow-line region in the infrared: active galactic nuclei with resolved fine-structure lines in the Spitzer archive
• X-ray Evidence for a Buried Active Galactic Nucleus in UGC 5101
• Suzaku Observations of Moderately Obscured (Compton-thin) Active Galactic Nuclei Selected by Swift/BAT Hard X-ray Survey
• Shedding Light on the Compton-thick Active Galactic Nucleus in the Ultra-luminous Infrared Galaxy UGC 5101 with Broadband X-ray Spectroscopy
• X-ray Underluminous Active Galactic Nuclei Relative to Broad Emission Lines in Ultraluminous Infrared Galaxies
• A New Black Hole Mass Estimate for Obscured Active Galactic Nuclei
• NuSTAR unveils a heavily obscured low-luminosity Active Galactic Nucleus in the Luminous Infrared Galaxy NGC 6286
• Suzaku View of the Swift/BAT Active Galactic Nuclei. III. Application of Numerical Torus Models to Two Nearly Compton Thick AGNs (NGC 612 and NGC 3081)
• quantitative determination of the AGN content in local ULIRGs through L-band spectroscopy
• Subaru Adaptive-optics High-spatial-resolution Infrared K- and L'-band Imaging Search for Deeply Buried Dual AGNs in Merging Galaxies
• The location of an active nucleus and the soft X-ray shadowing by a tidal tail in the ULIRG Mrk 273
• Nuclear absorption and emission in the AGN merger NGC 6240: the hard X-ray view

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