COSMIC REIONIZATION ON COMPUTERS. I. DESIGN AND CALIBRATION OF SIMULATIONS

Cosmic Reionization On Computers is a long-term program of numerical simulations of cosmic reionization. Its goal is to model fully self-consistently (albeit not necessarily from the first principles) all relevant physics, from radiative transfer to gas dynamics and star formation, in simulation vol...

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Published inThe Astrophysical journal Vol. 793; no. 1; pp. 1 - 12
Main Author Gnedin, Nickolay Y
Format Journal Article
LanguageEnglish
Published United States Institute of Physics (IOP) 20.09.2014
Subjects
Calibration
Computer programs
Computer simulation
Luminosity
Mathematical analysis
Mathematical models
Red shift
Spatial resolution
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ISSN0004-637X
1538-4357
DOI10.1088/0004-637X/793/1/29

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Summary:Cosmic Reionization On Computers is a long-term program of numerical simulations of cosmic reionization. Its goal is to model fully self-consistently (albeit not necessarily from the first principles) all relevant physics, from radiative transfer to gas dynamics and star formation, in simulation volumes of up to 100 comoving Mpc, and with spatial resolution approaching 100 pc in physical units. In this method paper, we describe our numerical method, the design of simulations, and the calibration of numerical parameters. Using several sets (ensembles) of simulations in 20/ h super(-1) Mpc and 40 h super(-1) Mpc boxes with spatial resolution reaching 125 pc at z = 6, we are able to match the observed galaxy UV luminosity functions at all redshifts between 6 and 10, as well as obtain reasonable agreement with the observational measurements of the Gunn-Peterson optical depth at z < 6.
Bibliography:ObjectType-Article-1
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content type line 23
AC02-07CH11359
USDOE Office of Science (SC), High Energy Physics (HEP)
FERMILAB-PUB-14-066-A
ISSN:0004-637X
1538-4357
DOI:10.1088/0004-637X/793/1/29