Journal article

Reionization and galaxy inference from the high-redshift Ly α forest

Y Qin, A Mesinger, SEI Bosman, M Viel

Monthly Notices of the Royal Astronomical Society | Oxford University Press (OUP) | Published : 2021


The transmission of Lyman α (Ly α) in the spectra of distant quasars depends on the density, temperature, and ionization state of the intergalactic medium. Therefore, high-redshift (z > 5) Ly α forests could be invaluable in studying the late stages of the epoch of reionization (EoR), as well as properties of the sources that drive it. Indeed, high-quality quasar spectra have now firmly established the existence of large-scale opacity fluctuations at z > 5, whose physical origins are still debated. Here, we introduce a Bayesian framework capable of constraining the EoR and galaxy properties by forward-modelling the high-z Ly α forest. Using priors from galaxy and cosmic microwave background ..

View full abstract

University of Melbourne Researchers


Citation metrics