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

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

doi:10.3847/1538-4357/aa6c24

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

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

Astronomy

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35 Scopus citations

Abstract

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 language	English (US)
Article number	26
Journal	Astrophysical Journal
Volume	841
Issue number	1
DOIs	https://doi.org/10.3847/1538-4357/aa6c24
State	Published - May 20 2017

Keywords

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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abstract = "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.",

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T2 - Properties of the Post-reionization IGM

AU - Gnedin, Nickolay Y.

AU - Becker, George D.

AU - Fan, Xiaohui

PY - 2017/5/20

Y1 - 2017/5/20

N2 - 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.

AB - 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.

KW - cosmology: theory

KW - intergalactic medium

KW - large-scale structure of universe

KW - methods: numerical

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

Abstract

Keywords

ASJC Scopus subject areas

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