AGN Triality of Triple Mergers: Detection of Faint X-ray Point Sources

Abstract

We present results from our X-ray analysis of the first systematic search for triple AGN in nearby (z<0.077) triple galaxy mergers. We analyze archival Chandra observations of 7 triple galaxy mergers with BAYMAX (Bayesian Analysis of Multiple AGN in X-rays), fitting each observation with single, dual, and triple X-ray point source models. In doing so, we conclude that 1 triple merger has one X-ray point source (SDSS J0858+1822, although it's unlikely to be an AGN); 5 triple mergers are likely composed of two X-ray point sources (NGC 3341, SDSS J1027+1749, SDSS J1631+2352, SDSS J1708+2153, and SDSS J2356$-$1016); and one system is composed of three X-ray point sources (SDSS J0849+1114). By fitting the individual X-ray spectra of each point source, we analyze the 2-7 keV luminosities as well as the levels of obscuration associated with each potential AGN. We find that 4/5 dual X-ray point source systems have primary and secondary point sources with bright X-ray luminosities (L_2-7 kev >10^40 erg s^-1), possibly associated with 4 new undetected dual AGN. The dual and triple point source systems are found to have physical separations between 3-9 kpc and flux ratios between 2x10^-3 - 0.84. A multi-wavelength analysis to determine the origin of the X-ray point sources discovered in this work is presented in our companion paper (Foord et al. 2020c).

arXiv comment27 pages, 8 figures, accepted to ApJ

References in corpus (70)

• 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 Sixteenth Data Release of the Sloan Digital Sky Surveys: First Release from the APOGEE-2 Southern Survey and Full Release of eBOSS Spectra
• X-ray emission from star-forming galaxies - I. High-mass X-ray binaries
• Direct cosmological simulations of the growth of black holes and galaxies
• BAT AGN Spectroscopic Survey - V. X-ray properties of the Swift/BAT 70-month AGN catalog
• The distribution of absorbing column densities among Seyfert 2 galaxies
• X-ray spectral properties of AGN in the Chandra Deep Field South
• On the X-ray, optical emission line and black hole mass properties of local Seyfert galaxies
• The Kozai Mechanism and the Evolution of Binary Supermassive Black Holes
• An XMM-Newton spectral survey of 12 micron selected galaxies. I. X-ray data
• Long Term Evolution of Massive Black Hole Binaries
• The Quest for Dual and Binary Supermassive Black Holes: A Multi-Messenger View
• Gravitational torque-driven black hole growth and feedback in cosmological simulations
• Understanding Dual AGN Activation in the Nearby Universe
• Massive Black Hole Binary Mergers in Dynamical Galactic Environments
• Hydrodynamics of circumbinary accretion: Angular momentum transfer and binary orbital evolution
• Growing supermassive black holes in the late stages of galaxy mergers are heavily obscured
• The bolometric luminosity of type 2 AGN from extinction-corrected [OIII]: no evidence for Eddington-limited sources
• Merging and Clustering of the Swift BAT AGN Sample
• A Complete Sample of ULX Host Galaxies
• Off the Beaten Path: A New Approach to Realistically Model The Orbital Decay of Supermassive Black Holes in Galaxy Formation Simulations
• The power of infrared AGN selection in mergers: a theoretical study
• Identification of 1.4 Million AGNs in the Mid-Infrared using WISE Data
• The final-parsec problem in the collisionless limit
• Are Compton-Thick AGN the Missing Link Between Mergers and Black Hole Growth?
• The X-ray and Radio Connection in Low-luminosity Active Nuclei
• 2XMM Ultraluminous X-Ray Source Candidates in Nearby Galaxies
• Active Galactic Nucleus Pairs from the Sloan Digital Sky Survey. I. The Frequency on ~ 5-100 kpc Scales
• Chandra Discovery of a Binary Active Galactic Nucleus in Mrk 739
• A close-pair binary in a distant triple supermassive black-hole system
• Heavily Obscured Quasar Host Galaxies at z~2 are Disks, Not Major Mergers
• A population of luminous accreting black holes with hidden mergers
• X-ray Binary Luminosity Function Scaling Relations for Local Galaxies Based on Subgalactic Modeling
• Chaos and Mixing in Triaxial Stellar Systems
• A New Population of Compton-Thick AGN Identified Using the Spectral Curvature Above 10 keV
• Chandra X-ray and Hubble Space Telescope Imaging of Optically Selected kiloparsec-Scale Binary Active Galactic Nuclei I. Nature of the Nuclear Ionizing Sources
• Compton thick active galactic nuclei in Chandra surveys
• The Link Between the Hidden Broad Line Region and the Accretion Rate in Seyfert 2 Galaxies
• X-ray Emission from Hot Gas in Galaxy Mergers
• The evolution of the Compton thick fraction and the nature of obscuration for AGN in the Chandra Deep Field South
• Interactions between multiple supermassive black holes in galactic nuclei: a solution to the final parsec problem
• The X-ray spectral properties of the AGN population in the XMM-Newton bright serendipitous survey
• Compton thick AGN in the NuSTAR era
• The Chandra COSMOS Legacy Survey: Compton Thick AGN at high redshift
• Broadband Observations of the Compton-thick Nucleus of NGC 3393
• A probable Milli-Parsec Supermassive Binary Black Hole in the Nearest Quasar Mrk 231
• Resolving The Generation of Starburst Winds in Galaxy Mergers
• An Offset Seyfert 2 Nucleus in the Minor Merger System NGC 3341
• Massive perturbers and the efficient merger of binary massive black holes
• The Chandra View of Galaxy Mergers
• The Origin of Double-peaked Narrow Lines in Active Galactic Nuclei II: Kinematic Classifications for the Population at z < 0.1
• C-GOALS II. Chandra Observations of the Lower Luminosity Sample of Nearby Luminous Infrared Galaxies in GOALS
• Buried Black Hole Growth in IR-selected Mergers: New Results from Chandra
• A Triple AGN in a Mid-Infrared Selected Late Stage Galaxy Merger
• The nightmare scenario: measuring the stochastic gravitational-wave background from stalling massive black-hole binaries with pulsar-timing arrays
• Cosmic Train Wreck by Massive Black Holes: Discovery of a kpc-Scale Triple Active Galactic Nucleus
• A Second Look at 12 Candidate Dual AGNs using $\mathtt{BAYMAX}$
• Numerical Simulations of Hot Halo Gas in Galaxy Mergers
• Bright end of the luminosity function of high-mass X-ray binaries: contributions of hard, soft and supersoft sources
• Disclosing the properties of low-redshift dual AGN through XMM-Newton and SDSS spectroscopy
• A Trio of Massive Black Holes Caught in the Act of Merging
• SDSS J1056+5516: A Triple AGN or an SMBH Recoil Candidate?
• A Chandra X-ray Survey of Optically Selected AGN Pairs
• A Bayesian Analysis of SDSS J0914+0853, a Low-Mass Dual AGN Candidate
• The NGC 3341 minor merger: a panchromatic view of the active galactic nucleus in a dwarf companion
• Diffuse X-ray-emitting Gas in Major Mergers
• X-ray Properties of Radio-Selected Dual Active Galactic Nuclei
• AGN Activity in Nucleated Galaxies as Measured by Chandra
• A Multi-wavelength Analysis of Binary-AGN Candidate PSO J334.2028+01.4075
• Multiple AGN in the crowded field of the compact group SDSSJ0959+1259

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• 3D spectroscopy with GTC-MEGARA of the triple AGN candidate in SDSS J102700.40+174900.8
• Very Large Array Multi-band Radio Imaging of the Triple AGN Candidate SDSS J0849+1114
• A Multiwavelength Portrait of the 3C 220.3 Lensed System
• Lensing in the Darkness: A Bayesian Analysis of 22 Chandra Sources at $z\gtrsim 6$ Shows No Evidence of Lensing
• Enhanced activity in close dual-AGN systems in the local Universe
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