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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…
Quasar UV Luminosity Function at from SDSS Deep Imaging Data
Zhiwei Pan, Linhua Jiang, Xiaohui Fan +2
We present a well-designed sample of more than 1000 type 1 quasars at and derive UV quasar luminosity functions (QLFs) in this redshift range. These quasars were selected…
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…