Compton-Thick AGN in the NuSTAR era VI: The observed Compton-thick fraction in the Local Universe

Abstract

We present the analysis of simultaneous NuSTAR and XMM-Newton data of 8 Compton-thick (CT-) active galactic nuclei (AGN) candidates selected in the Swift-Burst Alert Telescope (BAT) 100 month survey. This work is part of an ongoing effort to find and characterize all CT-AGN in the local ($z\le$0.05) Universe. We used two physically motivated models, MYTorus and borus02, to characterize the sources in the sample, finding 5 of them to be confirmed CT-AGN. These results represent an increase of $\sim 19$% over the previous NuSTAR-confirmed, BAT-selected CT-AGN at $z\le 0.05$, bringing the total number to 32. This corresponds to an observed fraction of $\sim 8$\% of all AGN within this volume-limited sample, although it increases to $20\pm 5$% when limiting the sample to $z\le 0.01$. Out of a sample of 48 CT-AGN candidates, selected using BAT and soft (0.3$-$10 keV) X-ray data, only 24 are confirmed as CT-AGN with the addition of the NuSTAR data. This highlights the importance of NuSTAR when classifying local obscured AGN. We also note that most of the sources in our full sample of 48 Seyfert 2 galaxies with NuSTAR data have significantly different line-of-sight and average torus column densities, favouring a patchy torus scenario.

arXiv comment31 pages, 13 figures, accepted for publication in ApJ

References in corpus (64)

• 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 Nuclear Spectroscopic Telescope Array (NuSTAR) Mission
• Atomic Data for Astrophysics. II. New Analytic Fits for Photoionization Cross Sections of Atoms and Ions
• The Burst Alert Telescope (BAT) on the Swift MIDEX Mission
• The 6dF Galaxy Survey: Final Redshift Release (DR3) and Southern Large-Scale Structures
• The synthesis of the cosmic X-ray background in the Chandra and XMM-Newton era
• The Chandra Deep Field-North Survey. XIII. 2 Ms Point-Source Catalogs
• Toward the Standard Population Synthesis Model of the X-Ray Background: Evolution of X-Ray Luminosity and Absorption Functions of Active Galactic Nuclei Including Compton-Thick Populations
• The 70 Month Swift-BAT All-Sky Hard X-Ray Survey
• BAT AGN Spectroscopic Survey - V. X-ray properties of the Swift/BAT 70-month AGN catalog
• An X-ray Spectral Model for Compton-Thick Toroidal Reprocessors
• The 105 month Swift-BAT all-sky hard X-ray survey
• Ubiquitous variability of X-ray absorbing column densities in Seyfert 2 Galaxies
• Three years Swift-BAT Survey of AGN: reconciling theory and observations?
• Compton-thick Accretion in the local Universe
• The 3rd IBIS/ISGRI soft gamma-ray survey catalog
• Obscuration-dependent evolution of Active Galactic Nuclei
• First X-ray-Based Statistical Tests for Clumpy-Torus Models: Eclipse Events from 230 Years of Monitoring of Seyfert AGN
• New Spectral Model for Constraining Torus Covering Factors from Broadband X-ray Spectra of Active Galactic Nuclei
• The Nature of the Compton-thick X-ray Reprocessor in NGC 4945
• An Unveiling Event in the Type 2 AGN NGC4388: A Challenge for a Parsec Scale Absorber
• The Accretion History of AGN I: Supermassive Black Hole Population Synthesis Model
• NuSTAR Spectroscopy of Multi-Component X-ray Reflection from NGC 1068
• NuSTAR and XMM-Newton Observations of Luminous, Heavily Obscured, WISE-Selected Quasars at z ~ 2
• The NuSTAR View of Nearby Compton-thick AGN: The Cases of NGC 424, NGC 1320 and IC 2560
• Classification of X-ray Sources in the XMM-Newton Serendipitous Source Catalog
• X-Ray Spectral Model from Clumpy Torus and Its Application to Circinus Galaxy
• BAT X-ray Survey - III: X-ray Spectra and Statistical Properties
• Compton Thick AGN in the XMM-COSMOS survey
• X-ray spectral and eclipsing model of the clumpy obscurer in active galactic nuclei
• Compton thick AGN in the NuSTAR era
• An XMM-Newton spectral survey of 12 micron selected galaxies. II. Implications for AGN selection and unification
• The variable hard X-ray emission of NGC4945 as observed by NuSTAR
• Determining the covering factor of Compton-thick active galactic nuclei with NuSTAR
• Mid-infrared luminous quasars in the GOODS-Herschel fields: a large population of heavily-obscured, Compton-thick quasars at z~2
• NuSTAR observations of water megamaser AGN
• Broadband Observations of the Compton-thick Nucleus of NGC 3393
• NuSTAR Observations of the Compton-thick Active Galactic Nucleus and Ultraluminous X-ray Source Candidate in NGC 5643
• NuSTAR Survey of Obscured Swift/BAT-selected Active Galactic Nuclei: II. Median High-energy Cutoff in Seyfert II Hard X-ray Spectra
• The NuSTAR view of reflection and absorption in NGC 7582
• The properties of the AGN torus as revealed from a set of unbiased NuSTAR observations
• NuSTAR Resolves the First Dual AGN above 10 keV in SWIFT J2028.5+2543
• The hard X-ray emission of the luminous infrared galaxy NGC 6240 as observed by NuSTAR
• C-GOALS II. Chandra Observations of the Lower Luminosity Sample of Nearby Luminous Infrared Galaxies in GOALS
• The variable and non-variable X-ray absorbers in Compton-thin type-II Active Galactic Nuclei
• A Compton-thin Solution for the Suzaku X-ray Spectrum of the Seyfert 2 Galaxy Mkn 3
• Investigating the sensitivity of observed spectral energy distributions to clumpy torus properties in Seyfert galaxies
• Shedding Light on the Compton-thick Active Galactic Nucleus in the Ultra-luminous Infrared Galaxy UGC 5101 with Broadband X-ray Spectroscopy
• Can we reproduce the X-ray background spectral shape using local AGN?
• Accurate classification of 75 counterparts of objects detected in the 54 month Palermo Swift/BAT hard X-ray catalogue
• NuSTAR observations of heavily obscured Swift/BAT AGN: constraints on the Compton-thick AGN fraction
• Local AGN Survey (LASr): I. Galaxy sample, infrared colour selection and predictions for AGN within 100 Mpc
• A hard look at local, optically-selected, obscured Seyfert galaxies
• A Large Population of Luminous Active Galactic Nuclei Lacking X-ray Detections: Evidence for Heavy Obscuration?
• Compton-thick AGN in the NuSTAR era II: A deep NuSTAR and XMM-Newton view of the candidate Compton thick AGN in NGC 1358
• X-ray spectral properties of seven heavily obscured Seyfert 2 galaxies
• Compton-thick AGN in the NuSTAR era IV: A deep NuSTAR and XMM-Newton view of the candidate Compton thick AGN in ESO 116-G018
• Accretion History of AGN II: Constraints on AGN Spectral Parameters using the Cosmic X-ray Background
• Compton-thick AGNs in the NuSTAR era. V: Joint NuSTAR and XMM-Newton spectral analysis of three "soft-Gamma" candidate CT-AGNs in the Swift-BAT 100-month catalog
• NuSTAR and Keck Observations of Heavily Obscured Quasars Selected by WISE
• A Compton-thick nucleus in the dual AGN of Mrk 266
• Chandra and NuSTAR follow-up observations of Swift-BAT selected AGN
• Elucidating the global distribution of reprocessing gas in NGC 1194
• A broadband X-ray study of a sample of AGNs with [OIII] measured inclinations

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