activity
20162026
most citedThe WISSH Quasars Project I. Powerful ionised outflows in hyper-luminous quasars

201 citations · 1.5k across the 78 of their papers we have counts for

collaborators
Showing astro-ph.COShow all

7 papers · 1 filter

astro-ph.CO2024★ 2 cited

Percent-level timing of reionization: self-consistent, implicit-likelihood inference from XQR-30+ Ly forest data

Yuxiang Qin, Andrei Mesinger, David Prelogović +13

The Lyman alpha (Lya) forest in the spectra of z>5 quasars provides a powerful probe of the late stages of the Epoch of Reionization (EoR). With the recent advent of exquisite data…

astro-ph.CO2024★ 1 cited

What are the Pillars of Reionization? Revising the AGN Luminosity Function at z~5

Andrea Grazian, Emanuele Giallongo, Konstantina Boutsia +22

In the past, high-z AGNs were given a minor role as possible drivers of reionization, despite initial evidences in favor of their large space densities at low luminosities by Chand…

astro-ph.CO2024★ 52 cited

Damping Wing-Like Features in the Stacked Ly Forest: Potential Neutral Hydrogen Islands at

Yongda Zhu, George D. Becker, Sarah E. I. Bosman +28

Recent quasar absorption line observations suggest that reionization may end as late as . As a means to search for large neutral hydrogen islands at , we revisi…

astro-ph.CO2023

Constraints on the Evolution of the Ionizing Background and Ionizing Photon Mean Free Path at the End of Reionization

Frederick B. Davies, Sarah E. I. Bosman, Prakash Gaikwad +16

The variations in Ly forest opacity observed at between lines of sight to different background quasars are too strong to be caused by fluctuations in the density field a…

astro-ph.CO2023★ 2 cited

Probing Ultra-late Reionization: Direct Measurements of the Mean Free Path over

Yongda Zhu, George D. Becker, Holly M. Christenson +22

The mean free path of ionizing photons, , is a critical parameter for modeling the intergalactic medium (IGM) both during and after reionization. We present direct mea…

astro-ph.CO2022★ 91 cited

Long Dark Gaps in the Ly Forest at : Evidence of Ultra Late Reionization from XQR-30 Spectra

Yongda Zhu, George D. Becker, Sarah E. I. Bosman +22

We present a new investigation of the intergalactic medium (IGM) near reionization using dark gaps in the Lyman- (Ly) forest. With its lower optical depth, Ly offers a pot…