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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
Cosmology on the largest scales with the SKA
Proceedings of Science, Volume 9-13-June-2014, Article 025, Year 2014
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Description
The study of the Universe on ultra-large scales is one of the major science cases for the Square Kilometre Array (SKA). The SKA will be able to probe a vast volume of the cosmos, thus representing a unique instrument, amongst next-generation cosmological experiments, for scrutinising the Universe's properties on the largest cosmic scales. Probing cosmic structures on extremely large scales will have many advantages. For instance, the growth of perturbations is well understood for those modes, since it falls fully within the linear régime. Also, such scales are unaffected by the poorly understood feedback of baryonic physics. On ultra-large cosmic scales, two key effects become significant: primordial non-Gaussianity and relativistic corrections to cosmological observables. Moreover, if late-time acceleration is driven not by dark energy but by modifications to general relativity, then such modifications should become apparent near and above the horizon scale. As a result, the SKA is forecast to deliver transformational constraints on non-Gaussianity and to probe gravity on super-horizon scales for the first time. © Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike Licence.
Authors & Co-Authors
Camera, Stefano
Portugal, Lisbon
Universidade de Lisboa
Raccanelli, Alvise
United States, Baltimore
Johns Hopkins University
United States, Pasadena
California Institute of Technology
Bull, Philip
Norway, Oslo
Universitetet I Oslo
Bertacca, Daniele
South Africa, Bellville
University of the Western Cape
Chen, Xuelei
China, Beijing
Chinese Academy of Sciences
Ferreira, Pedro G.
United Kingdom, Oxford
University of Oxford
Kunz, Martin
Switzerland, Geneva
Université de Genève
South Africa, Muizenberg
African Institute for Mathematical Sciences
Maartens, Roy
South Africa, Bellville
University of the Western Cape
United Kingdom, Portsmouth
University of Portsmouth
Mao, Yi
France, Paris
Sorbonne Université
Santos, Mario G.
Portugal, Lisbon
Universidade de Lisboa
South Africa, Bellville
University of the Western Cape
South Africa, Pinelands
Square Kilometre Array, South Africa
Shapiro, Paul R.
United States, Austin
The University of Texas at Austin
Viel, Matteo
Italy, Trieste
Osservatorio Astronomico Di Trieste
Italy, Trieste
Istituto Nazionale Di Fisica Nucleare, Sezione Di Trieste
Xu, Yidong
United Kingdom, Oxford
University of Oxford
Statistics
Citations: 25
Authors: 13
Affiliations: 15
Identifiers
Doi:
10.22323/1.215.0025
ISSN:
18248039