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A Closer Look at Two of the Most Luminous Quasars in the Universe
Jan-Torge Schindler, Xiaohui Fan, Mladen Novak +7
Ultra-luminous quasars () provide us with a rare view into the nature of the most massive and most rapidly accreting supermassive black holes (SMBHs). Following…
Measurements of the z ~ 6 Intergalactic Medium Optical Depth and Transmission Spikes Using a New z > 6.3 Quasar Sample
Jinyi Yang, Feige Wang, Xiaohui Fan +9
We report new measurements of the intergalactic medium (IGM) Ly and Ly effective optical depth at , using a new sample of quasar sightlines including 32 quasars at…
Pōniuā'ena: A Luminous Quasar Hosting a 1.5 Billion Solar Mass Black Hole
Jinyi Yang, Feige Wang, Xiaohui Fan +16
We report the discovery of a luminous quasar, J1007+2115 at ("Pōniuā'ena"), from our wide-field reionization-era quasar survey. J1007+2115 is the second quasar now known…
A Significantly Neutral Intergalactic Medium Around the Luminous z=7 Quasar J0252-0503
Feige Wang, Frederick B. Davies, Jinyi Yang +14
Luminous quasars provide direct probes of the evolution of supermassive black holes (SMBHs) and the intergalactic medium (IGM) during the epoch of reionization (EoR). The L…