Reionization of the Inhomogeneous Universe

@article{MiraldaEscude2000ReionizationOT,
  title={Reionization of the Inhomogeneous Universe},
  author={Jordi Miralda-Escudé and Martin G. Haehnelt and Martin J. Rees},
  journal={The Astrophysical Journal},
  year={2000},
  volume={530},
  pages={1 - 16}
}
A model of the density distribution in the intergalactic medium (IGM), motivated by that found in numerical simulations, is used to demonstrate the effect of a clumpy IGM and discrete sources on the reionization of the universe. In an inhomogeneous universe reionization occurs outside-in, starting in voids and gradually penetrating into overdense regions. Reionization should not be sudden but gradual, with a continuous rise of the photon mean free path over a fair fraction of the Hubble time as… 

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