ACTIVE GALACTIC NUCLEI
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The incidence of obscuration in active galactic nuclei
... 1310 active galactic nuclei (AGN) selected on the basis of their rest-frame 2–10 keV X-ray flux from the XMM- COSMOS survey, in the redshift range ...
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Clumpy stellar winds and the obscuration of active galactic nuclei
... The role of star-formation driven outflows in the obscuration of the central source in Active Galactic Nuclei (AGN) is discussed. The outflow from a sub-parsec scale accretion disc is numerically ...
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The 4 Ms Chandra deep field south number counts apportioned by source class: pervasive active galactic nuclei and the ascent of normal galaxies
... (active galactic nuclei (AGNs), normal galaxies, and Galactic stars) and subpopulations (as a function of redshift, AGN absorption, luminosity, and galaxy morphology) and test models that ...
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A comparative analysis of virial black hole mass estimates of moderate luminosity active galactic nuclei using Subaru/FMOS
... moderate-luminosity active galactic nuclei (AGNs), typical of those found in X-ray surveys of deep fields, with the goal of testing the validity of single-epoch virial black hole mass ...
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Breaking the σ₈–Ωₘ degeneracy using the clustering of HIGH-? x-ray active galactic nuclei
... The clustering of X-ray selected active galactic nuclei (AGNs) appears to be a valuable tool for extracting cos- mological information. Using the recent high-precision angular clustering results of ...
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Optical, Near IR, and Sub mm IFU Observations of the Nearby Dual Active Galactic Nuclei MRK 463
... We present optical and near-IR Integral Field Unit ( IFU ) and ALMA band 6 observations of the nearby dual active galactic nuclei ( AGNs ) Mrk 463. At a distance of 210 Mpc, and a nuclear separation ...
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The systematic search for z ≳ 5 active galactic nuclei in the Chandra Deep Field South
... Treister et al. (2013) used the Chandra 4-Ms data in their search for high-redshift ( z > 6) active galactic nuclei (AGN). Using a sample of preselected z = 6–8 Lyman Break dropout and pho- ...
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Variability selected low luminosity active galactic nuclei in the 4 Ms chandra deep field south
... The 4 Ms Chandra Deep Field-South (CDF-S) and other deep X-ray surveys have been highly effective at selecting active galactic nuclei (AGNs). However, cosmologically distant low-luminosity AGNs ...
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The host galaxies and environment of Chandra selected active galactic nuclei in the deep ACS GTO cluster fields
... as active galactic nuclei (AGNs) or QSOs depending on their X-ray ...these nuclei are found in near face- on late-type galaxies although selection effects might be ...the nuclei ...
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Long term x ray variability of typical active galactic nuclei in the distant universe
... Variability studies are valuable for probing the physical properties of active galactic nuclei ( AGNs ) ( e.g., Ulrich et al. 1997; Peterson 2001 ) . Simple light-travel time arguments enable a fi ...
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A statistical relation between the X ray spectral index and Eddington ratio of active galactic nuclei in deep surveys
... X-ray emission from active galactic nuclei (AGN) is ubiquitous (Tananbaum et al. 1979), and is often used itself as an indicator of black hole accretion activity. The hard X-ray (>2 keV) spectrum ...
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Major Galaxy Mergers Only Trigger the Most Luminous Active Galactic Nuclei
... (high-luminosity active galactic nuclei (AGNs)) activity and galaxy mergers has been seen in intensely star-forming galaxies like ultraluminous infrared galaxies and in some luminous quasars ...
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Heavily Obscured Active Galactic Nuclei in High redshift Luminous Infrared Galaxies
... We take advantage of the rich multiwavelength data available in the Chandra Deep Field South (CDF-S), including the 4 Ms Chandra observations (the deepest X-ray data to date), in order to search for heavily obscured low- ...
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An Iwasawa Taniguchi effect for Compton thick active galactic nuclei
... We present the first study of an Iwasawa–Taniguchi/‘X-ray Baldwin’ effect for Compton-thick active galactic nuclei (AGN). We report a statistically significant anticorrelation between the rest-frame ...
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Searching for active galactic nuclei among unidentified INTEGRAL sources
... identify active galactic nuclei (AGNs) among unidentified INTEGRAL ...likely active galaxies on the basis of their radio spectra, near-infrared photometry and location above the Galaxy ...
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X RAY CONSTRAINTS ON THE ACTIVE GALACTIC NUCLEI PROPERTIES IN SPITZER INFRARED SPECTROGRAPH IDENTIFIED z similar to 2 ULTRALUMINOUS INFRARED GALAXIES
... integrated active galactic nuclei (AGNs) emissivity estimated from measurements of the cosmic X-ray background (CXRB) and the X-ray luminosity function ...
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Lifting the Veil on Obscured Accretion : Active Galactic Nuclei Number Counts and Survey Strategies for Imaging Hard X Ray Missions
... of active galactic nuclei (AGNs) that produces the X-ray background (XRB) is necessary to connect the history of accretion to observations of galaxy evolution at longer ...
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Searching for active galactic nuclei among unidentified INTEGRAL Sources
... identify active galactic nuclei (AGNs) among unidentified INTEGRAL ...likely active galaxies on the basis of their radio spectra, near-infrared photometry and location above the Galaxy ...
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Do Moderate Luminosity Active Galactic Nuclei Suppress Star Formation?
... from active galactic nuclei (AGNs), as the central supermassive black hole accretes material and grows, heats the interstellar material and suppresses star ...galaxies: active – galaxies: ...
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Obscured GOODS Active Galactic Nuclei and Their Host Galaxies at z < 1 25 : The Slow Black Hole Growth Phase
... We compute black hole masses and bolometric luminosities for 87 obscured active galactic nuclei (AGNs) in the redshift range 0.25 z 1.25, selected from the GOODS deep multi-wavelength survey fields ...
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