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X-ray Emission from Optically Selected Radio-Intermediate and Radio-Loud Quasars
B. P. Miller, W. N. Brandt, D. P. Schneider +3
We present the results of an investigation into the X-ray properties of radio-intermediate and radio-loud quasars (RIQs and RLQs, respectively). We combine large, modern optical (e…
The X-Ray Properties of the Optically Brightest Mini-BAL Quasars from the Sloan Digital Sky Survey
Jianfeng Wu, W. N. Brandt, M. L. Comins +4
We have compiled a sample of 14 of the optically brightest radio-quiet quasars (~~17.5 and ~~1.9) in the Sloan Digital Sky Survey Data Release 5 quasar catalog…
The Extended Chandra Deep Field-South Survey: Optical spectroscopy of faint X-ray sources with the VLT and Keck
J. D. Silverman, V. Mainieri, M. Salvato +26
We present the results of a program to acquire high-quality optical spectra of X-ray sources detected in the E-CDF-S and its central area. New spectroscopic redshifts are measured…
Parsec-Scale Bipolar X-ray Shocks Produced by Powerful Jets from the Neutron Star Circinus X-1
P. H. Sell, S. Heinz, D. E. Calvelo +10
We report the discovery of multi-scale X-ray jets from the accreting neutron star X-ray binary, Circinus X-1. The bipolar outflows show wide opening angles and are spatially coinci…
The Sloan Digital Sky Survey Quasar Catalog V. Seventh Data Release
Donald P. Schneider, Gordon T. Richards, Patrick B. Hall +45
We present the fifth edition of the Sloan Digital Sky Survey (SDSS) Quasar Catalog, which is based upon the SDSS Seventh Data Release. The catalog, which contains 105,783 spectrosc…
Dust-free quasars in the early Universe
Linhua Jiang, Xiaohui Fan, W. N. Brandt +9
The most distant quasars known, at redshifts z=6, generally have properties indistinguishable from those of lower-redshift quasars in the rest-frame ultraviolet/optical and X-ray b…