511 citations · 6.8k across the 146 of their papers we have counts for
15 papers · 1 filter
AGN X-ray variability in the XMM-COSMOS survey
G. Lanzuisi, G. Ponti, M. Salvato +18
We took advantage of the observations carried out by XMM in the COSMOS field during 3.5 years, to study the long term variability of a large sample of AGN (638 sources), in a wide…
The Chandra-COSMOS survey IV: X-ray spectra of the bright sample
G. Lanzuisi, F. Civano, M. Elvis +14
We present the X-ray spectral analysis of the 390 brightest extragalactic sources in the Chandra-COSMOS catalog, showing at least 70 net counts in the 0.5-7 keV band. This sample h…
XMM-Newton Observations of Three Interacting Luminous Infrared Galaxies
Dale Mudd, Smita Mathur, Matteo Guainazzi +8
We investigate the X-ray properties of three interacting luminous infrared galaxy systems. In one of these systems, IRAS 18329+5950, we resolve two separate sources. A second, IRAS…
Spectral Energy Distributions of Type 1 AGN in the COSMOS Survey I - The XMM-COSMOS Sample
M. Elvis, H. Hao, F. Civano +39
The "Cosmic Evolution Survey" (COSMOS) enables the study of the Spectral Energy Distributions (SEDs) of Active Galactic Nuclei (AGN) because of the deep coverage and rich sampling…
The Chandra COSMOS Survey: III. Optical and Infrared Identification of X-ray Point Sources
F. Civano, M. Elvis, M. Brusa +29
The Chandra COSMOS Survey (C-COSMOS) is a large, 1.8 Ms, Chandra program that has imaged the central 0.9 deg^2 of the COSMOS field down to limiting depths of 1.9 10^-16 erg cm^-2 s…
Chandra High resolution Observations of CID-42, a candidate recoiling SMBH
F. Civano, M. Elvis, G. Lanzuisi +15
We present Chandra High Resolution Camera observations of CID-42, a candidate recoiling supermassive black hole (SMBH) at z=0.359 in the COSMOS survey. CID-42 shows two optical com…
Fe K emission from active galaxies in the COSMOS field
K. Iwasawa, V. Mainieri, M. Brusa +14
We present a rest-frame spectral stacking analysis of ~1000 X-ray sources detected in the XMM-COSMOS field in order to investigate the iron K line properties of active galaxies bey…
Dissecting Photometric redshift for Active Galactic Nuclei using XMM- and Chandra-COSMOS samples
M. Salvato, O. Ilbert, G. Hasinger +61
With this paper, we release accurate photometric redshifts for 1692 counterparts to Chandra sources in the central square degree of the COSMOS field. The availability of a large tr…
Accretion Rate and the Physical Nature of Unobscured Active Galaxies
Jonathan R. Trump, Christopher D. Impey, Brandon C. Kelly +15
We show how accretion rate governs the physical properties of a sample of unobscured broad-line, narrow-line, and lineless active galactic nuclei (AGNs). We avoid the systematic er…
Hot-Dust-Poor Type 1 Active Galactic Nuclei in the COSMOS Survey
Heng Hao, Martin Elvis, Francesca Civano +13
We report a sizable class of type 1 active galactic nuclei (AGNs) with unusually weak near-infrared (1-3μm) emission in the XMM-COSMOS type 1 AGN sample. The fraction of these "hot…
Witnessing the key early phase of quasar evolution: an obscured AGN pair in the interacting galaxy IRAS 20210+1121
E. Piconcelli, C. Vignali, S. Bianchi +6
We report the discovery of an active galactic nucleus (AGN) pair in the interacting galaxy system IRAS 20210+1121 at z = 0.056. An XMM-Newton observation reveals the presence of an…
A Runaway Black Hole in COSMOS: Gravitational Wave or Slingshot Recoil?
F. Civano, M. Elvis, G. Lanzuisi +39
We present a detailed study of a peculiar source in the COSMOS survey at z=0.359. Source CXOCJ100043.1+020637 (CID-42) presents two compact optical sources embedded in the same gal…
The [OIII] emission line luminosity function of optically selected type-2 AGN from zCOSMOS
A. Bongiorno, M. Mignoli, G. Zamorani +61
We present a catalog of 213 type-2 AGN selected from the zCOSMOS survey. The selected sample covers a wide redshift range (0.15<z<0.92) and is deeper than any other previous study,…
The Nature of Optically Dull Active Galactic Nuclei in COSMOS
Jonathan R. Trump, Chris D. Impey, Yoshi Taniguchi +17
We present infrared, optical, and X-ray data of 48 X-ray bright, optically dull AGNs in the COSMOS field. These objects exhibit the X-ray luminosity of an active galactic nucleus (…
Revealing X-ray obscured quasars in SWIRE sources with extreme mid-IR/optical flux ratios
G. Lanzuisi, E. Piconcelli, F. Fiore +4
Recent works have suggested that selection criteria based on MIR colors can be used to reveal a population of dust-enshrouded, extremely luminous quasars at z>1. However the X-ray…