Modelling the 21-cm Signal from the Epoch of Reionization and Cosmic Dawn

Choudhury, T. Roy ; Datta, Kanan ; Majumdar, Suman ; Ghara, Raghunath ; Paranjape, Aseem ; Mondal, Rajesh ; Bharadwaj, Somnath ; Samui, Saumyadip (2016) Modelling the 21-cm Signal from the Epoch of Reionization and Cosmic Dawn Journal of Astrophysics and Astronomy, 37 (4). ISSN 0250-6335

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Official URL: http://doi.org/10.1007/s12036-016-9403-z

Related URL: http://dx.doi.org/10.1007/s12036-016-9403-z

Abstract

Studying the cosmic dawn and the epoch of reionization through the redshifted 21-cm line are among the major science goals of the SKA1. Their significance lies in the fact that they are closely related to the very first stars in the Universe. Interpreting the upcoming data would require detailed modelling of the relevant physical processes. In this article, we focus on the theoretical models of reionization that have been worked out by various groups working in India with the upcoming SKA in mind. These models include purely analytical and semi-numerical calculations as well as fully numerical radiative transfer simulations. The predictions of the 21-cm signal from these models would be useful in constraining the properties of the early galaxies using the SKA data.

Item Type:Article
Source:Copyright of this article belongs to Indian Academy of Sciences, Bengaluru.
Keywords:Intergalactic Medium Cosmology: Theory Dark Ages; Reionization; First Stars Diffuse Radiation Large-Scale Structure Of Universe Methods: Numerical Methods: Statistical.
ID Code:116319
Deposited On:09 Apr 2021 04:30
Last Modified:09 Apr 2021 04:30

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