552 citations · 16.5k across the 268 of their papers we have counts for
9 papers · 2 filters
A transition mass for black holes to show broad emission lines
Susmita Chakravorty, Martin Elvis, Gary Ferland
Although the super-massive (AGN) and stellar mass (XRBs) black holes have many properties in common, the broad emission lines (BELs) are exclusively signatures of the AGN. Based on…
Chandra View of the Warm-Hot IGM toward 1ES 1553+113: Absorption Line Detections and Identifications (Paper I)
F. Nicastro, M. Elvis, Y. Krongold +14
We present the first results from our pilot 500 ks Chandra-LETG Large Program observation of the soft X-ray brightest source in the z>=0.4 sky, the blazar 1ES 1553+113, aimed to se…
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 HRC View of the Sub-arcsecond Structures in the Nuclear Region of NGC 1068
Junfeng Wang, Giuseppina Fabbiano, Margarita Karovska +2
We have obtained a high spatial resolution X-ray image of the nucleus of NGC 1068 using the High Resolution Camera (HRC-I) on board the Chandra X-ray Observatory, which provides an…
Millimeter imaging of submillimeter galaxies in the COSMOS field: Redshift distribution
V. Smolcic, M. Aravena, F. Navarrete +21
We present new IRAM PdBI 1.3mm continuum observations at ~1.5" resolution of 28 SMGs previously discovered with the 870um bolometer LABOCA at APEX within the central 0.7deg2 of the…
Bolometric luminosities and Eddington ratios of X-ray selected Active Galactic Nuclei in the XMM-COSMOS survey
E. Lusso, A. Comastri, B. D. Simmons +25
Bolometric luminosities and Eddington ratios of both X-ray selected broad-line (Type-1) and narrow-line (Type-2) AGN from the XMM-Newton survey in the COSMOS field are presented. T…
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…
A Population of Dust-Rich Quasars at z ~ 1.5
Y. Sophia Dai, Jacqueline Bergeron, Martin Elvis +19
We report Herschel SPIRE (250, 350, and 500 micron) detections of 32 quasars with redshifts 0.5 < z < 3.6 from the Herschel Multi-tiered Extragalactic Survey. These sources are fro…
IR-derived covering factors for a large sample of quasars from WISE-UKIDSS-SDSS
I. G. Roseboom, A. Lawrence, M. Elvis +3
We investigate the range of covering factors (determined from the ratio of IR to UV/optical luminosity) seen in luminous type 1 quasars using a combination of data from the WISE, U…