290 citations · 436 across the 8 of their papers we have counts for
6 papers · 1 filter
Triplets of Quasars at high redshift I: Photometric data
M. Victoria Alonso, Georgina V. Coldwell, Ilona Sochting +4
We have conducted an optical and infrared imaging in the neighbourhoods of 4 triplets of quasars. R, z', J and Ks images were obtained with MOSAIC II and ISPI at Cerro Tololo Inter…
The Luminosity Function of X-ray Selected Active Galactic Nuclei: Evolution of Supermassive Black Holes at High Redshift
J. D. Silverman, P. J. Green, W. A. Barkhouse +9
We present a measure of the hard (2-8 keV) X-ray luminosity function (XLF) of Active Galactic Nuclei up to z~5. At high redshifts, the wide area coverage of the Chandra Multiwaveng…
ChaMP Serendipitous Galaxy Cluster Survey
W. A. Barkhouse, P. J. Green, A. Vikhlinin +12
We present a survey of serendipitous extended X-ray sources and optical cluster candidates from the Chandra Multi-wavelength Project (ChaMP). Our main goal is to make an unbiased c…
The BTC40 Survey for Quasars at 4.8 < z < 6
E. M. Monier, J. D. Kennefick, P. B. Hall +4
The BTC40 Survey for high-redshift quasars is a multicolor search using images obtained with the Big Throughput Camera (BTC) on the CTIO 4-m telescope in V, I, and z filters to sea…
Extremely Red Objects from the NICMOS/HST Parallel Imaging Survey
Lin Yan, P. J. McCarthy, R. J. Weymann +5
We present a catalog of extremely red objects discovered using the NICMOS/HST parallel imaging database and ground-based optical follow-up observations. Within an area of 16 square…
The 0.1-100 keV spectral shape and variability of Mkn421 in high state
A. Malizia, M. Capalbi, F. Fiore +15
The results of a BeppoSAX TOO observation of the BL Lac object Mkn421 during a high intensity state are reported and compared with monitoring X-ray data collected with the BeppoSAX…