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20242026
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astro-ph.CO2026

Forest without Trees is still Fruitful: Constraints on the thermal state of the neutral IGM at with the 21-cm forest power spectrum

Tomáš Šoltinský, Arnab Chakraborty, Girish Kulkarni +10

Neutral regions of the intergalactic medium (IGM) during the Epoch of Reionization (EoR) remain largely unexplored due to the limitations of existing probes. Owing to discoveries o…

astro-ph.CO2025

Updated dark pixel fraction constraints on reionization's end from the Lyman-series forests of XQR-30

Frederick B. Davies, Sarah E. I. Bosman, Valentina D'Odorico +16

The fraction of "dark pixels" in the Ly and other Lyman-series forests at provides a powerful constraint on the end of the reionization process. Any spectral region…

astro-ph.CO2024

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

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.CO2024

IGM damping wing constraints on the tail end of reionisation from the enlarged XQR-30 sample

Bradley Greig, Andrei Mesinger, Eduardo Bañados +16

The attenuation of Ly photons by neutral hydrogen in the intergalactic medium (IGM) at continues to be a powerful probe for studying the epoch of reionisation. Give…