A large sky survey with MeerKAT

Mário G. Santos*, Philip Bull, Stefano Camera, Song Chen, José Fonseca, Ian Heywood, Matt Hilton, Matt Jarvis, Gyula I.G. Józsa, Kenda Knowles, Lerothodi Leeuw, Roy Maartens, Eliab Malefahlo, Kim McAlpine, Kavilan Moodley, P. Patel, Alkistis Pourtsidou, Matthew Prescott, Kristine Spekkens, Russ TaylorAmadeus Witzemann, Imogen Whittam

*Corresponding author for this work

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

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Abstract

We discuss the ground-breaking science that will be possible with a wide area survey, using the MeerKAT telescope, known as MeerKLASS (MeerKAT Large Area Synoptic Survey). The current specifications of MeerKAT make it a great fit for cosmological applications, which require large volumes. In particular, a large survey over ∼ 4,000deg2 for ∼ 4,000 hours will potentially provide the first ever measurements of the baryon acoustic oscillations using the 21cm intensity mapping technique, with enough accuracy to impose constraints on the nature of dark energy. The combination with multi-wavelength data will give unique additional information, such as the first constraints on primordial non-Gaussianity using the multi-tracer technique, as well as a better handle on foregrounds and systematics. The survey will also produce a large continuum galaxy sample down to a depth of 5 µJy in L-band, unmatched by any other concurrent telescope, which will allow to study the large-scale structure of the Universe out to high redshifts. Finally, the same survey will supply unique information for a range of other science applications, including a large statistical investigation of galaxy clusters, and the discovery of rare high-redshift AGN that can be used to probe the epoch of reionization as well as produce a rotation measure map across a huge swathe of the sky. The MeerKLASS survey will be a crucial step on the road to using SKA1-MID for cosmological applications, as described in the top priority SKA key science projects.

Original languageEnglish
Title of host publicationMeerKAT Science: On the Pathway to the SKA (MeerKAT2016)
PublisherProceedings of Science
Number of pages15
Volume277
DOIs
Publication statusPublished - 1 Feb 2018
Event2016 MeerKAT Science: On the Pathway to the SKA - Stellenbosch, South Africa
Duration: 25 May 201627 May 2016

Publication series

NameProceedings of Science
PublisherScuola Internazionale Superiore di Studi Avanzati (SISSA)
ISSN (Print)1824-8039

Conference

Conference2016 MeerKAT Science
Abbreviated titleMeerKAT 2016
Country/TerritorySouth Africa
CityStellenbosch
Period25/05/1627/05/16

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