11 papers
X-rays from the First Massive Black Holes
W. N. Brandt, C. Vignali, D. P. Schneider +7
X-ray studies of high-redshift (z > 4) active galaxies have advanced substantially over the past few years, largely due to results from the new generation of X-ray observatories. A…
Reverberation Mapping of High-Redshift, High-Luminosity Quasars
Shai Kaspi, Hagai Netzer, Dan Maoz +3
We present preliminary results from a reverberation mapping program to measure the Broad Line Region size in high-redshift, high-luminosity quasars. The observations are carried ou…
X-ray emission from the most luminous z>4 Palomar Digital Sky Survey Quasars: the Chandra view
C. Vignali, W. N. Brandt, D. P. Schneider +2
We present the results obtained from exploratory Chandra observations of nine high-redshift (z=4.09-4.51) quasars, selected from among the optically brightest Palomar Digital Sky S…
Chandra and XMM-Newton Observations of the Highest Redshift Quasars: X-rays from the Dawn of the Modern Universe
W. N. Brandt, C. Vignali, X. Fan +2
We review X-ray studies of the highest redshift (z > 4) quasars, focusing on recent advances enabled largely by the capabilities of Chandra and XMM-Newton. Included are discussions…
J-Band Spectroscopy of the z = 5.74 BAL QSO SDSSp J104433.04-012502.2
R. W. Goodrich, R. Campbell, F. Chaffee +8
We use the NIRSPEC near-IR spectrometer on Keck II to obtain moderate resolution (R = 1540) spectroscopy that shows conclusively that the C IV emission line in the z = 5.74 quasar…
X-raying Active Galaxies with the New Generation of X-ray Observatories: Ionized Outflows and High-Redshift Studies
W. N. Brandt, S. C. Gallagher, S. Kaspi
We briefly review X-ray studies of ionized AGN outflows and high-redshift AGN. We discuss recent progress with Chandra and XMM-Newton as well as prospects and requirements for futu…