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- W2765148001 abstract "Three-dimensional radiative transfer simulations of the epoch of reionization can produce realistic results, but are computationally expensive. On the other hand, simulations relying on one-dimensional radiative transfer solutions are faster but limited in accuracy due to their more approximate nature. Here, we compare the performance of the reionization simulation codes grizzly and C2-ray which use 1D and 3D radiative transfer schemes respectively. The comparison is performed using the same cosmological density fields, halo catalogues and source properties. We find that the ionization maps, as well as the 21-cm signal maps from these two simulations are very similar even for complex scenarios which include thermal feedback on low mass halos. The comparison between the schemes in terms of the statistical quantities such as the power spectrum of the brightness temperature fluctuation agree with each other within 10% error throughout the entire reionization history. grizzly seems to perform slightly better than the semi-numerical approaches considered in Majumdar et al. (2014) which are based on the excursion set principle. We argue that grizzly can be efficiently used for exploring parameter space, establishing observations strategies and estimating parameters from 21-cm observations." @default.
- W2765148001 created "2017-11-10" @default.
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- W2765148001 date "2018-02-07" @default.
- W2765148001 modified "2023-10-16" @default.
- W2765148001 title "Prediction of the 21-cm signal from reionization: comparison between 3D and 1D radiative transfer schemes" @default.
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- W2765148001 doi "https://doi.org/10.1093/mnras/sty314" @default.
- W2765148001 hasPublicationYear "2018" @default.
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