8 papers
Quasar lifetime measurements from extended Ly nebulae at
Dominika ÄurovÄÃková, Anna-Christina Eilers, Romain A. Meyer +7
The existence of billion-solar-mass black holes hosted in luminous quasars within the first gigayear of cosmic history poses a challenge to our understanding of supermassive black…
The Light Echo of a High-Redshift Quasar mapped with Lyman- Tomography
Anna-Christina Eilers, Minghao Yue, Jorryt Matthee +11
Ultra-violet (UV) radiation from accreting black holes ionizes the intergalactic gas around early quasars, carving out highly ionized bubbles in their surroundings. Any changes in…
First constraints on the local ionization topology in front of two quasars at z ~ 7.5
Timo Kist, Joseph F. Hennawi, Frederick B. Davies +10
Thus far, Lyman- damping wings towards quasars have been used to probe the \textit{global} ionization state of the foreground intergalactic medium (IGM). A new parameterization…
Inferring local quasar IGM damping wing constraints
Timo Kist, Joseph F. Hennawi, Frederick B. Davies
Lyman- damping wings towards quasars are a highly sensitive probe of the neutral hydrogen (HI) content in the foreground intergalactic medium (IGM), not only constraining the g…
A local, topology-independent parameterization of quasar IGM damping wings
Timo Kist, Joseph F. Hennawi, Frederick B. Davies
Lyman- damping wings towards quasars provide a unique probe of reionization because their strength correlates strongly with the global volume-averaged neutral hydrogen (HI) fra…
Precisely Measuring the Cosmic Reionization History from IGM Damping Wings Towards Quasars
Joseph F. Hennawi, Timo Kist, Frederick B. Davies +1
We introduce a new approach for analyzing the IGM damping wings imprinted on the proximity zones of quasars in the epoch of reionization (EoR). Whereas past work has typically forg…