Radio continuum surveys with square kilometre array pathfinders

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dc.contributor.authorNorris, Ray P.
dc.contributor.authorAfonso, J.
dc.contributor.authorBacon, David
dc.contributor.authorCress, Catherine
dc.date.accessioned2018-02-16T08:14:51Z
dc.date.available2018-02-16T08:14:51Z
dc.date.issued2013
dc.description.abstractIn the lead-up to the Square Kilometre Array (SKA) project, several next-generation radio telescopes and upgrades are already being built around the world. These include APERTIF (The Netherlands), ASKAP (Australia), eMERLIN (UK), VLA (USA), e-EVN (based in Europe), LOFAR (The Netherlands), Meerkat (South Africa), and the MurchisonWidefield Array (MWA). Each of these new instruments has different strengths, and coordination of surveys between them can help maximise the science from each of them. A radio continuum survey is being planned on each of them with the primary science objective of understanding the formation and evolution of galaxies over cosmic time, and the cosmological parameters and large-scale structures which drive it. In pursuit of this objective, the different teams are developing a variety of new techniques, and refining existing ones. To achieve these exciting scientific goals, many technical challenges must be addressed by the survey instruments. Given the limited resources of the global radioastronomical community, it is essential that we pool our skills and knowledge. We do not have sufficient resources to enjoy the luxury of re-inventing wheels. We face significant challenges in calibration, imaging, source extraction and measurement, classification and cross-identification, redshift determination, stacking, and data-intensive research. As these instruments extend the observational parameters, we will face further unexpected challenges in calibration, imaging, and interpretation. If we are to realise the full scientific potential of these expensive instruments, it is essential that we devote enough resources and careful study to understanding the instrumental effects and how they will affect the data. We have established an SKA Radio Continuum Survey working group, whose prime role is to maximise science from these instruments by ensuring we share resources and expertise across the projects. Here we describe these projects, their science goals, and the technical challenges which are being addressed to maximise the science return.en_US
dc.description.accreditationWeb of Science
dc.identifier.citationNorris, R.P. et al. (2013). Radio continuum surveys with square kilometre array pathfinders. Publications of the Astronomical Society of Australia (PASA), 30: e020en_US
dc.identifier.issn1323-3580
dc.identifier.urihttp://hdl.handle.net/10566/3503
dc.identifier.urihttp://dx.doi.org/10.1017/pas.2012.020
dc.language.isoenen_US
dc.publisherCambridge University Pressen_US
dc.rightsThis is the pre-print version (From arXiv:1210.7521) of the article published online at: http://dx.doi.org/10.1017/pas.2012.020
dc.subjectTelescopesen_US
dc.subjectSurveysen_US
dc.subjectStarsen_US
dc.subjectGalaxiesen_US
dc.subjectEvolutionen_US
dc.subjectFormationen_US
dc.subjectCosmologyen_US
dc.subjectRadio continuumen_US
dc.titleRadio continuum surveys with square kilometre array pathfindersen_US
dc.typeArticleen_US

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