Cosmic Reionization Redux

@article{Gnedin2006CosmicRR,
  title={Cosmic Reionization Redux},
  author={Nickolay Y. Gnedin and Xiaohui Fan},
  journal={The Astrophysical Journal},
  year={2006},
  volume={648},
  pages={1-6}
}
We show that numerical simulations of reionization that resolve the Lyman limit systems (and, thus, correctly count absorptions of ionizing photons) have converged to about a 10% level for 5 < z < 6.2 and are in reasonable agreement (within 10%) with the SDSS data in this redshift interval. The SDSS data thus constrain the redshift of overlap of cosmic H II regions to zOVL = 6.1 ± 0.15. At higher redshifts, the simulations are far from convergence on the mean Gunn-Peterson optical depth but… 

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