Cosmology with SKA radio continuum surveys

Matt J. Jarvis, David Bacon, Chris Blake, Michael Brown, Sam Lindsay, Alvise Raccanelli, Mário G. Santos, Dominik J. Schwarz

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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Abstract

Radio continuum surveys have, in the past, been of restricted use in cosmology. Most studies have concentrated on cross-correlations with the cosmic microwave background to detect the integrated Sachs-Wolfe effect, due to the large sky areas that can be surveyed. As we move into the SKA era, radio continuum surveys will have sufficient source density and sky area to play a major role in cosmology on the largest scales. In this chapter we summarise the experiments that can be carried out with the SKA as it is built up through the coming decade. We show that the SKA can play a unique role in constraining the non-Gaussianity parameter to sfNL 1, and provide a unique handle on the systematics that inhibit weak lensing surveys. The SKA will also provide the necessary data to test the isotropy of the Universe at redshifts of order unity and thus evaluate the robustness of the cosmological principle. Thus, SKA continuum surveys will turn radio observations into a central probe of cosmological research in the coming decades.
Original languageEnglish
Title of host publicationAdvancing Astrophysics with the Square Kilometre Array
Subtitle of host publicationAASKA14
PublisherProceedings of Science
Number of pages15
Publication statusPublished - Apr 2015
EventAdvancing Astrophysics with the Square Kilometre Array - Giardini Naxos, Italy
Duration: 9 Jun 201413 Jun 2014

Publication series

Name
PublisherProceedings of Science
ISSN (Print)1824-8039

Conference

ConferenceAdvancing Astrophysics with the Square Kilometre Array
Country/TerritoryItaly
CityGiardini Naxos
Period9/06/1413/06/14

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