activity
20232026
most citedDamping Wing-Like Features in the Stacked Ly Forest: Potential Neutral Hydrogen Islands at

52 citations · 105 across the 9 of their papers we have counts for

collaborators

10 papers

astro-ph.GA2026

Nearly pristine gas in a galaxy 1 billion years after the Big Bang

Sarah E. I. Bosman, Frederick B. Davies, Louise Welsh +22

Excitation of carbon and oxygen ions is the primary mechanism by which collapsing gas clouds dissipate heat to form new stars. At early cosmic times, in galaxies with chemically pr…

astro-ph.GA2026

Broad Paschen lines as black hole mass tracers: A reverberation mapping calibration

Shengxiu Sun, Sarah E. I. Bosman, Frederick B. Davies +4

Single-epoch (SE) black hole mass estimators based on rest-frame ultraviolet or optical broad lines can be limited by dust attenuation or wavelength coverage. We calibrate estimato…

astro-ph.CO2026

Studying dark gaps in Ly- forest transmission with large reionization simulations

Barun Maity, Frederick B. Davies, Benedetta Spina +1

The physical conditions of the intergalactic medium (IGM) during the final stages of cosmic reionization () are not yet fully understood. Recent reports of unexpected…

astro-ph.CO2025

Detecting the signature of helium reionization through 3HeII 3.46cm line-intensity mapping

Benedetta Spina, Cristiano Porciani, Sarah E. I. Bosman +4

Helium reionization is the most recent phase change of the intergalactic medium, yet its timing and main drivers remain uncertain. Among the probes to trace its unfolding, the 3.46…

astro-ph.GA2025

A close look at the black hole masses and hot dusty toruses of the first quasars with MIRI-MRS

Sarah E. I. Bosman, Javier Álvarez-Márquez, Frederick B. Davies +29

The presence of supermassive black holes (SMBHs, ) at remains a puzzle. While their existence appears to require exotic formation or growth proce…

astro-ph.CO2025★ 1 cited

Measuring the IGM correlation length at 5<z<6.1: a fast change at the end of Reionization

Benedetta Spina, Sarah E. I. Bosman, Barun Maity +1

The Lyman- forest of high redshift quasars is a powerful probe of the late stages of the Epoch of Reionization (EoR), particularly through the presence of Gunn-Peterson troughs.…

astro-ph.CO2024

Signatures of warm dark matter in the cosmological density fields extracted using Machine Learning

Ander Artola, Sarah E. I. Bosman, Prakash Gaikwad +6

We aim to construct a machine-learning approach that allows for a pixel-by-pixel reconstruction of the intergalactic medium (IGM) density field for various warm dark matter (WDM) m…

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.CO2024★ 49 cited

Damping wings in the Lyman-α forest: a model-independent measurement of the neutral fraction at 5.4<z<6.1

Benedetta Spina, Sarah E. I. Bosman, Frederick B. Davies +2

Recent observations have positioned the endpoint of the Epoch of Reionisation (EoR) at redshift . However, observations of the Lyman- forest have not yet been able t…

astro-ph.CO2023★ 3 cited

The thesan project: public data release of radiation-hydrodynamic simulations matching reionization-era JWST observations

Enrico Garaldi, Rahul Kannan, Aaron Smith +13

Cosmological simulations serve as invaluable tools for understanding the Universe. However, the technical complexity and substantial computational resources required to generate su…