AASKA14_007.pdf (2.08 MB)
Epoch of reionization modelling and simulations for SKA
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posted on 2023-06-09, 07:31 authored by Ilian IlievIlian Iliev, M Santos, A Mesinger, S Majumdar, G MellemaIn this chapter we provide an overview of the current status of the simulations and modelling of the Cosmic Dawn and Epoch of Reionization. We discuss the modelling requirements as dictated by the characteristic scales of the problem and the SKA instrumental properties and the planned survey parameters. Current simulations include most of the relevant physical processes. They can follow the full nonlinear dynamics and are now reaching the required scale and dynamic range, although small-scale physics still needs to be included at sub-grid level. However, despite a significant progress in developing novel numerical methods for efficient utilization of current hardware they remain quite computationally expensive. In response, a number of alternative approaches, particularly semi-analytical/semi-numerical methods, have been developed. While necessarily more approximate, if appropriately constructed and calibrated on simulations they could be used to quickly explore the vast parameter space available. Further work is still required on including some physical processes in both simulations and semi-analytical modelling. This hybrid approach of fast, approximate modelling calibrated on numerical simulations can then be used to construct large libraries of reionization models for reliable interpretation of the observational data.
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- Published
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- Published version
Publisher
Dolman ScottVolume
2Page range
1605-1616Book title
Advancing Astrophysics with the Square Kilometre ArrayPlace of publication
Thatcham, UKISBN
9781909204713Department affiliated with
- Physics and Astronomy Publications
Notes
Paper given at the conference "Advancing Astrophysics with the Square Kilometre Array" (9-13 June, 2014 Giardini Naxos, Italy)Full text available
- Yes
Peer reviewed?
- Yes
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SKA OrganisationLegacy Posted Date
2017-08-02First Open Access (FOA) Date
2017-08-02First Compliant Deposit (FCD) Date
2017-08-02Usage metrics
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