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Near-IR spectroscopy of luminous LoBAL quasars at 1<z<2.5
Andreas Schulze, Malte Schramm, Wenwen Zuo +7
We present near-IR spectroscopy of 22 luminous low-ionization broad absorption line quasars (LoBAL QSOs) at redshift 1.3<z<2.5, with 12 objects at z~1.5 and 10 at z~2.3. The spectr…
Evidence for higher black hole spin in radio-loud quasars
Andreas Schulze, Chris Done, Youjun Lu +2
One of the major unsolved questions on the understanding of the AGN population is the origin of the dichotomy between radio-quiet and radio-loud quasars. The most promising explana…
Discovery of strong Balmer line absorption in two luminous LoBAL quasars at z~1.5
Andreas Schulze, Toru Misawa, Wenwen Zuo +1
We present the discovery of strong Balmer line absorption in H to H in two luminous low-ionization broad absorption line quasars (LoBAL QSOs) at z~1.5, with black hole masses…
Clustering of quasars in a wide luminosity range at redshift 4 with Subaru Hyper Suprime-Cam wide field imaging
Wanqiu He, Masayuki Akiyama, James Bosch +25
We examine the clustering of quasars over a wide luminosity range, by utilizing 901 quasars at with photometrically se…
X-ray constraints on the fraction of obscured AGN at high accretion luminosities
A. Georgakakis, M. Salvato, Z. Liu +9
The wide-area XMM-XXL X-ray survey is used to explore the fraction of obscured AGN at high accretion luminosities, , and out to re…
The Quasar Luminosity Function at Redshift 4 with Hyper Suprime-Cam Wide Survey
Masayuki Akiyama, Wanqiu He, Hiroyuki Ikeda +24
We present the luminosity function of z=4 quasars based on the Hyper Suprime-Cam Subaru Strategic Program Wide layer imaging data in the g, r, i, z, and y bands covering 339.8 deg^…