Constraining Reionization with Lyα Damping-wing Absorption in Galaxy Spectra: A Machine Learning Model Based on Reionization Simulations

Constraining Reionization with Lyα Damping-wing Absorption in Galaxy Spectra: A Machine Learning Model Based on Reionization Simulations

Recently, NIRSpec PRISM/CLEAR observations by JWST have begun providing rest-frame UV continuum measurements of galaxies at z  ≳ 7, revealing signatures of Ly α damping-wing (DW) absorption by the intergalactic medium (IGM). We develop a methodology to constrain the global ionization fraction of the...

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Main Authors: Hyunbae Park, Intae Jung, Hidenobu Yajima, Jenny G. Sorce, Paul R. Shapiro, Kyungjin Ahn, Pierre Ocvirk, Romain Teyssier, Gustavo Yepes, Ilian T. Iliev, Joseph S. W. Lewis
Format: Article
Language:English
Published: IOP Publishing 2025-01-01
Series:The Astrophysical Journal
Subjects:
Reionization
Early universe
Origin of the universe
Random Forests
Radiative transfer simulations
Online Access:https://doi.org/10.3847/1538-4357/adc001
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https://doi.org/10.3847/1538-4357/adc001

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