Cosmic Reionization on Computers: Properties of the Post-reionization IGM

Nickolay Y. Gnedin, George D. Becker, Xiaohui Fan

Research output: Contribution to journalArticlepeer-review

33 Scopus citations


We present a comparison between several observational tests of the post-reionization intergalactic medium and the numerical simulations of reionization completed under the Cosmic Reionization On Computers (CROC) project. The CROC simulations match the gap distribution reasonably well, and also provide a good match for the distribution of peak heights, but there is a notable lack of wide peaks in the simulated spectra and the fluxprobability distribution functions are poorly matched in the narrow redshift interval 5.5 < z < 5.7, with the match at other redshifts being significantly better, albeit not exact. Both discrepancies are related: simulations show more opacity than the data.

Original languageEnglish (US)
Article number26
JournalAstrophysical Journal
Issue number1
StatePublished - May 20 2017


  • cosmology: theory
  • intergalactic medium
  • large-scale structure of universe
  • methods: numerical

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science


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