• Fulltext

       

        Click here to view fulltext PDF


      Permanent link:
      https://www.ias.ac.in/article/fulltext/joaa/037/04/0029

    • Keywords

       

      Intergalactic medium; cosmology: theory; dark ages, reionization, first stars; diffuse radiation; large-scale structure of Universe; methods: numerical; methods: statistical.

    • 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.

    • Author Affiliations

       

      T. Roy Choudhury1 Kanan Datta2 Suman Majumdar3 Raghunath Ghara1 Aseem Paranjape4 Rajesh Mondal5 Somnath Bharadwaj5 Saumyadip Samui2

      1. National Centre for Radio Astrophysics,Tata Institute of Fundamental Research, Post Bag No. 3, Ganeshkhind, Pune 411 007, India.
      2. Department of Physics, Presidency University, 86/1 College Street, Kolkata 700 073, India.
      3. Department of Physics, Blackett Laboratory, Imperial College, London SW7 2AZ, UK.
      4. Inter-University Center for Astronomy and Astrophysics, Post Bag 4, Ganeshkhind, Pune 411 007, India.
      5. Department of Physics and Centre for Theoretical Studies, Indian Institute of Technology Kharagpur, Kharagpur 721 302, India.
    • Dates

       
  • Journal of Astrophysics and Astronomy | News

    • Continuous Article Publication

      Posted on January 27, 2016

      Since January 2016, the Journal of Astrophysics and Astronomy has moved to Continuous Article Publishing (CAP) mode. This means that each accepted article is being published immediately online with DOI and article citation ID with starting page number 1. Articles are also visible in Web of Science immediately. All these have helped shorten the publication time and have improved the visibility of the articles.

    • Editorial Note on Continuous Article Publication

      Posted on July 25, 2019

      Click here for Editorial Note on CAP Mode

© 2017-2019 Indian Academy of Sciences, Bengaluru.