activity
19942024
most citedThe Soft X-Ray Properties of a Complete Sample of Optically Selected Quasars II. Final Results

552 citations · 16.5k across the 268 of their papers we have counts for

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Showing 2008 · astro-phShow all

11 papers · 2 filters

astro-ph2008★ 110 cited

The Environments of Active Galactic Nuclei within the zCOSMOS Density Field

J. D. Silverman, K. Kovac, C. Knobel +58

The impact of environment on AGN activity up to z~1 is assessed by utilizing a mass-selected sample of galaxies from the 10k catalog of the zCOSMOS spectroscopic redshift survey. W…

astro-ph2008★ 115 cited

The XMM-Newton long look of NGC 1365: uncovering of the obscured X-ray source

G. Risaliti, M. Salvati, M. Elvis +10

We present an analysis of the extreme obscuration variability observed during an XMM-Newton 5-days continuous monitoring of the AGN in NGC 1365. The source was in a reflection-domi…

astro-ph2008★ 145 cited

The COSMOS AGN Spectroscopic Survey I: XMM Counterparts

Jonathan R. Trump, Chris D. Impey, Martin Elvis +17

We present optical spectroscopy for an X-ray and optical flux-limited sample of 677 XMM-Newton selected targets covering the 2 deg^2 COSMOS field, with a yield of 485 high-confiden…

astro-ph2008★ 236 cited

Ongoing and co-evolving star formation in zCOSMOS galaxies hosting Active Galactic Nuclei

J. D. Silverman, F. Lamareille, C. Maier +60

We present a study of the host galaxies of AGN selected from the zCOSMOS survey to establish if accretion onto supermassive black holes and star formation are explicitly linked up…

astro-ph2008★ 224 cited

Chasing highly obscured QSOs in the COSMOS field

F. Fiore, S. Puccetti, M. Brusa +41

(abridged) We take advantage of the deep Chandra and Spitzer coverage of a large area (more than 10 times the area covered by the Chandra deep fields, CDFs in the COSMOS field, to…

astro-ph2008★ 105 cited

High redshift quasars in the COSMOS survey: the space density of z>3 X-ray selected QSOs

M. Brusa, A. Comastri, R. Gilli +19

We present a new measurement of the space density of high redshift (3.0<z<4.5), X-ray selected QSOs obtained by exploiting the deep and uniform multiwavelength coverage of the COSM…

astro-ph2008★ 380 cited

Photometric redshift and classification for the XMM-COSMOS sources

M. Salvato, G. Hasinger, O. Ilbert +40

We present photometric redshifts and spectral energy distribution (SED) classifications for a sample of 1542 optically identified sources detected with XMM in the COSMOS field. Our…

astro-ph2008★ 21 cited

The Reddest DR3 SDSS/XMM Quasars

Monica Young, Martin Elvis, Guido Risaliti

We have cross-correlated the SDSS DR3 Schneider et al. (2005) quasar catalog with the XMM-Newton archive. Color and redshift selections (g - r > 0.5 and 0.9 z < 2.1) result in a sa…

astro-ph2008★ 30 cited

XMM-Newton View of the Multi-Phase Warm Absorber in Seyfert 1 Galaxy NGC985

Yair Krongold, Elena Jimenez-Bailon, Maria Santos-Lleo +6

We present an analysis of an XMM-Newton observation of the Seyfert 1 Galaxy NGC 985. The EPIC spectra present strong residuals to a single power-law model, indicating the presence…

astro-ph2008

Unveiling the nature of Seyfert nuclei with 1 - 100 micron spectral energy distributions

C. L. Buchanan, J. F. Gallimore, C. P. O'Dea +8

The infrared is a key wavelength regime for probing the dusty, obscured nuclear regions of active galaxies. We present results from an infrared study of 87 nearby Seyfert galaxies…

astro-ph2008★ 85 cited

X-ray Properties of the GigaHertz-Peaked and Compact Steep Spectrum Sources

Aneta Siemiginowska, Stephanie LaMassa, Thomas L. Aldcroft +2

We present {\it Chandra} X-ray Observatory observations of Giga-Hertz Peaked Spectrum (GPS) and Compact Steep Spectrum (CSS) radio sources. The {\it Chandra} sample contains 13 qua…