Skip to main content

Research Repository

Advanced Search

All Outputs (5)

How probable is the Ly-α damping wing in the spectrum of the redshift z = 5.9896 quasar ULAS J0148+0600? (2025)
Journal Article
Sawyer, F., Bolton, J. S., Becker, G. D., Conaboy, L., Haehnelt, M. G., Keating, L., Kulkarni, G., & Puchwein, E. (2025). How probable is the Ly-α damping wing in the spectrum of the redshift z = 5.9896 quasar ULAS J0148+0600?. Monthly Notices of the Royal Astronomical Society, 540(3), 2238-2252. https://doi.org/10.1093/mnras/staf858

The shape of the Ly-𝛼 transmission in the near zone of the redshift 𝑧 = 5.9896 quasar ULAS J0148+0600 (hereafter J0148) is consistent with a damping wing arising from an extended neutral hydrogen island in the diffuse intergalactic medium (IGM). Here... Read More about How probable is the Ly-α damping wing in the spectrum of the redshift z = 5.9896 quasar ULAS J0148+0600?.

The connection between high-redshift galaxies and Lyman α transmission in the Sherwood–Relics simulations of patchy reionization (2025)
Journal Article
Conaboy, L., Bolton, J. S., Keating, L. C., Haehnelt, M. G., Kulkarni, G., & Puchwein, E. (2025). The connection between high-redshift galaxies and Lyman α transmission in the Sherwood–Relics simulations of patchy reionization. Monthly Notices of the Royal Astronomical Society, 539(3), 2790–2805. https://doi.org/10.1093/mnras/staf648

Recent work has suggested that, during reionization, spatial variations in the ionizing radiation field should produce enhanced Ly α forest transmission at distances of tens of comoving Mpc from high-redshift galaxies. We demonstrate that the Sherwoo... Read More about The connection between high-redshift galaxies and Lyman α transmission in the Sherwood–Relics simulations of patchy reionization.

Reproducibility of machine learning analyses of 21 cm reionization maps (2024)
Journal Article
Sooknunan, K., Chapman, E., Conaboy, L., Mortlock, D. J., & Pritchard, J. R. Reproducibility of machine learning analyses of 21 cm reionization maps. Manuscript submitted for publication

Machine learning (ML) methods have become popular for parameter inference in cosmology, although their reliance on specific training data can cause difficulties when applied across different data sets. By reproducing and testing networks previously u... Read More about Reproducibility of machine learning analyses of 21 cm reionization maps.

The Lyman-limit photon mean free path at the end of late reionization in the Sherwood–Relics simulations (2024)
Journal Article
Feron, J., Conaboy, L., Bolton, J. S., Chapman, E., Haehnelt, M. G., Keating, L. C., Kulkarni, G., & Puchwein, E. (2024). The Lyman-limit photon mean free path at the end of late reionization in the Sherwood–Relics simulations. Monthly Notices of the Royal Astronomical Society, 532(2), 2401-2417. https://doi.org/10.1093/mnras/stae1636

Recent evidence supporting reionization ending at redshift z ≲ 6 includes the rapid redshift evolution of the mean free path, λmfp , for Lyman-limit photons through the intergalactic medium (IGM) at 5 < z < 6. Here, we investigate λmfp predicted by t... Read More about The Lyman-limit photon mean free path at the end of late reionization in the Sherwood–Relics simulations.