Cosmology with Phase 1 of the Square Kilometre Array Red Book 2018: Technical specifications and performance forecasts
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Published:2020
Issue:
Volume:37
Page:
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ISSN:1323-3580
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Container-title:Publications of the Astronomical Society of Australia
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language:en
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Short-container-title:Publ. Astron. Soc. Aust.
Author:
, Bacon David J., Battye Richard A.ORCID, Bull Philip, Camera Stefano, Ferreira Pedro G., Harrison Ian, Parkinson David, Pourtsidou Alkistis, Santos Mário G., Wolz Laura, Abdalla Filipe, Akrami Yashar, Alonso David, Andrianomena Sambatra, Ballardini Mario, Bernal José Luis, Bertacca Daniele, Bengaly Carlos A. P., Bonaldi Anna, Bonvin Camille, Brown Michael L., Chapman Emma, Chen Song, Chen Xuelei, Cunnington Steven, Davis Tamara M., Dickinson Clive, Fonseca José, Grainge Keith, Harper Stuart, Jarvis Matt J., Maartens Roy, Maddox Natasha, Padmanabhan Hamsa, Pritchard Jonathan R., Raccanelli Alvise, Rivi Marzia, Roychowdhury Sambit, Sahlén Martin, Schwarz Dominik J., Siewert Thilo M., Viel Matteo, Villaescusa-Navarro Francisco, Xu Yidong, Yamauchi Daisuke, Zuntz Joe
Abstract
Abstract
We present a detailed overview of the cosmological surveys that we aim to carry out with Phase 1 of the Square Kilometre Array (SKA1) and the science that they will enable. We highlight three main surveys: a medium-deep continuum weak lensing and low-redshift spectroscopic HI galaxy survey over 5 000 deg2; a wide and deep continuum galaxy and HI intensity mapping (IM) survey over 20 000 deg2 from
$z = 0.35$
to 3; and a deep, high-redshift HI IM survey over 100 deg2 from
$z = 3$
to 6. Taken together, these surveys will achieve an array of important scientific goals: measuring the equation of state of dark energy out to
$z \sim 3$
with percent-level precision measurements of the cosmic expansion rate; constraining possible deviations from General Relativity on cosmological scales by measuring the growth rate of structure through multiple independent methods; mapping the structure of the Universe on the largest accessible scales, thus constraining fundamental properties such as isotropy, homogeneity, and non-Gaussianity; and measuring the HI density and bias out to
$z = 6$
. These surveys will also provide highly complementary clustering and weak lensing measurements that have independent systematic uncertainties to those of optical and near-infrared (NIR) surveys like Euclid, LSST, and WFIRST leading to a multitude of synergies that can improve constraints significantly beyond what optical or radio surveys can achieve on their own. This document, the 2018 Red Book, provides reference technical specifications, cosmological parameter forecasts, and an overview of relevant systematic effects for the three key surveys and will be regularly updated by the Cosmology Science Working Group in the run up to start of operations and the Key Science Programme of SKA1.
Publisher
Cambridge University Press (CUP)
Subject
Space and Planetary Science,Astronomy and Astrophysics
Cited by
226 articles.
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