Evolution of neutral oxygen during the epoch of reionization and its use in estimating the neutral hydrogen fraction

@article{Doughty2019EvolutionON,
  title={Evolution of neutral oxygen during the epoch of reionization and its use in estimating the neutral hydrogen fraction},
  author={Caitlin Doughty and Kristian Finlator},
  journal={Monthly Notices of the Royal Astronomical Society},
  year={2019},
  volume={489},
  pages={2755-2768}
}
  • Caitlin Doughty, Kristian Finlator
  • Published 2019
  • Physics
  • Monthly Notices of the Royal Astronomical Society
  • We use synthetic sightlines drawn through snapshots of the Technicolor Dawn simulations to explore how the statistics of neutral oxygen OI absorbers respond to hydrogen reionization. The ionization state of the circumgalactic medium (CGM) initially roughly tracks that of the intergalactic medium, but beginning at $z=8$ the CGM grows systematically more neutral owing to self-shielding. Weak absorbers trace diffuse gas that lies farther from halos, hence they are ionized first, whereas stronger… CONTINUE READING

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