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Reionization and the Cosmic Dawn with the Square Kilometre Array |
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| Authors: | Garrelt Mellema Léon V E Koopmans Filipe A Abdalla Gianni Bernardi Benedetta Ciardi Soobash Daiboo A G de Bruyn Kanan K Datta Heino Falcke Andrea Ferrara Ilian T Iliev Fabio Iocco Vibor Jeli? Hannes Jensen Ronniy Joseph Panos Labroupoulos Avery Meiksin Andrei Mesinger André R Offringa V N Pandey Jonathan R Pritchard Mario G Santos Dominik J Schwarz Benoit Semelin Harish Vedantham Sarod Yatawatta Saleem Zaroubi |
| Institution: | 1. Department of Astronomy & Oskar Klein Center, Stockholm University, Stockholm, Sweden 2. Kapteyn Astronomical Institute, University of Groningen, Groningen, The Netherlands 3. Department of Physics and Astronomy, University College London, London, UK 4. Center for Astrophysics, Harvard University, Cambridge, USA 5. Max Plank Institute for Astrophysics, Garching, Germany 7. Department of Astronomy, Radboud University, Nijmegen, Netherlands 8. Scuola Normale Superiore, Pisa, Italy 9. Department of Physics and Astronomy, Sussex University, Sussex, UK 10. Department of Physics and Oskar Klein Center, Stockholm University, Stockholm, Sweden 6. ASTRON, Dwingeloo, The Netherlands 11. Institute for Astronomy, University of Edinburgh, Edinburgh, UK 12. Department of Physics, Imperial College, London, UK 13. CENTRA, Instituto Superior Tecnico, Technical University of Lisbon, Lisbon, Portugal 14. Faculty of Physics, Bielefeld University, Bielefeld, Germany 15. Observatoire de Paris, Paris, France |
| Abstract: | The Square Kilometre Array (SKA) will have a low frequency component (SKA-low) which has as one of its main science goals the study of the redshifted 21 cm line from the earliest phases of star and galaxy formation in the Universe. This 21 cm signal provides a new and unique window both on the time of the formation of the first stars and accreting black holes and the subsequent period of substantial ionization of the intergalactic medium. The signal will teach us fundamental new things about the earliest phases of structure formation, cosmology and even has the potential to lead to the discovery of new physical phenomena. Here we present a white paper with an overview of the science questions that SKA-low can address, how we plan to tackle these questions and what this implies for the basic design of the telescope. |
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