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Modelling the 21-cm Signal from the Epoch of Reionization and Cosmic Dawn |
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| Authors: | T Roy Choudhury Kanan Datta Suman Majumdar Raghunath Ghara Aseem Paranjape Rajesh Mondal Somnath Bharadwaj Saumyadip Samui |
| Institution: | 1.National Centre for Radio Astrophysics,Tata Institute of Fundamental Research,Pune,India;2.Department of Physics,Presidency University,Kolkata,India;3.Department of Physics, Blackett Laboratory,Imperial College,London,UK;4.Inter-University Center for Astronomy and Astrophysics,Pune,India;5.Department of Physics and Centre for Theoretical Studies,Indian Institute of Technology Kharagpur,Kharagpur,India |
| 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. |
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