1.1k citations · 4.4k across the 88 of their papers we have counts for
11 papers · 1 filter
Deep XMM-Newton Observations of an X-ray Weak, Broad Absorption Line Quasar at
Jinyi Yang, Xiaohui Fan, Feige Wang +14
We report X-ray observations of the most distant known gravitationally lensed quasar, J0439+1634 at , which is also a broad absorption line (BAL) quasar, using the XMM-Newt…
Metallicity in Quasar Broad Line Regions at Redshift 6
Shu Wang, Linhua Jiang, Yue Shen +10
Broad line regions (BLRs) in high-redshift quasars provide crucial information of chemical enrichment in the early universe. Here we present a study of BLR metallicities in 33 quas…
IGM damping wing constraints on reionisation from covariance reconstruction of two QSOs
Bradley Greig, Andrei Mesinger, Frederick B. Davies +3
Bright, high redshift () QSOs are powerful probes of the ionisation state of the intervening intergalactic medium (IGM). The detection of Ly damping wing absorption imprint…
Revisiting the Lensed Fraction of High-Redshift Quasars
Minghao Yue, Xiaohui Fan, Jinyi Yang +1
The observed lensed fraction of high-redshift quasars is significantly lower than previous theoretical predictions . We revisit the lensed fraction of h…
Paving the Way for Euclid and JWST via Optimal Selection of High-z Quasars
Riccardo Nanni, Joseph F. Hennawi, Feige Wang +3
We introduce a probabilistic approach to select 6<z<8 quasar candidates for spectroscopic follow-up, which is based on density estimation in the high-dimensional space inhabited by…
Measuring the Density Fields around Bright Quasars at with XQR-30 Spectra
Huanqing Chen, Anna-Christina Eilers, Sarah E. I. Bosman +10
Measuring the density of the intergalactic medium using quasar sightlines in the epoch of reionization is challenging due to the saturation of Lyman- absorption. Near a luminous…
A Candidate Kiloparsec-scale Quasar Pair at
Minghao Yue, Xiaohui Fan, Jinyi Yang +1
We report the discovery of a close quasar pair candidate at , J2037--4537. J2037--4537 is resolved into two quasar images at the same redshift in ground-based observations.…
Probing Early Super-massive Black Hole Growth and Quasar Evolution with Near-infrared Spectroscopy of 37 Reionization-era Quasars at 6.3 < z <= 7.64
Jinyi Yang, Feige Wang, Xiaohui Fan +18
We report the results of near-infrared spectroscopic observations of 37 quasars in the redshift range , including 32 quasars at , forming the largest quasar n…
Chasing the Tail of Cosmic Reionization with Dark Gap Statistics in the Ly Forest over
Yongda Zhu, George D. Becker, Sarah E. I. Bosman +14
We present a new investigation of the intergalactic medium (IGM) near the end of reionization using "dark gaps" in the Lyman-alpha (Ly) forest. Using spectra of 55 QSOs at $z_{\…
Hydrogen reionisation ends by : Lyman- optical depth measured by the XQR-30 sample
Sarah E. I. Bosman, Frederick B. Davies, George D. Becker +23
The presence of excess scatter in the Ly- forest at , together with the existence of sporadic extended opaque Gunn-Peterson troughs, has started to provide robust evi…
Radio and Far-IR Emission Associated with a Massive Star-forming Galaxy Candidate at z6.8: A Radio-Loud AGN in the Reionization Era?
Ryan Endsley, Daniel P. Stark, Xiaohui Fan +7
We report the identification of radio (0.144-3 GHz), mid-IR, far-IR, and sub-mm (24-850m) emission at the position of one of 41 UV-bright (M) $z\s…