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Please use this identifier to cite or link to this item: http://hdl.handle.net/2289/6706
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dc.contributor.authorHurley-Walker, N.-
dc.contributor.authorDwarakanath, K.S.-
dc.contributor.authorDeshpande, A.A.-
dc.contributor.authorPrabu, T.-
dc.contributor.authorUdaya Shankar, N.-
dc.contributor.authorSrivani, K.S.-
dc.contributor.authorSubrahmanyan, Ravi-
dc.contributor.author+40 Co-authors-
dc.date.accessioned2017-08-22T06:18:25Z-
dc.date.available2017-08-22T06:18:25Z-
dc.date.issued2017-01-
dc.identifier.citationMonthly Notices of the Royal Astronomical Society, 2017, Vol. 464, p1146-1167en_US
dc.identifier.issn0035-8711-
dc.identifier.issn1365-2966 - (online)-
dc.identifier.urihttp://hdl.handle.net/2289/6706-
dc.descriptionOpen Accessen_US
dc.description.abstractUsing the Murchison Widefield Array (MWA), the low-frequency Square Kilometre Array precursor located in Western Australia, we have completed the GaLactic and Extragalactic All-sky MWA (GLEAM) survey, and present the resulting extragalactic catalogue, utilizing the first year of observations. The catalogue covers 24 831 square degrees, over declinations south of +30° and Galactic latitudes outside 10° of the Galactic plane, excluding some areas such as the Magellanic Clouds. It contains 307 455 radio sources with 20 separate flux density measurements across 72–231 MHz, selected from a time- and frequency-integrated image centred at 200 MHz, with a resolution of ≈2 arcmin. Over the catalogued region, we estimate that the catalogue is 90 per cent complete at 170 mJy, and 50 per cent complete at 55 mJy, and large areas are complete at even lower flux density levels. Its reliability is 99.97 per cent above the detection threshold of 5σ, which itself is typically 50 mJy. These observations constitute the widest fractional bandwidth and largest sky area survey at radio frequencies to date, and calibrate the low-frequency flux density scale of the southern sky to better than 10 per cent. This paper presents details of the flagging, imaging, mosaicking and source extraction/characterization, as well as estimates of the completeness and reliability. All source measurements and images are available online.1 This is the first in a series of publications describing the GLEAM survey results.en_US
dc.language.isoenen_US
dc.publisherOxford University Press for the Royal Astronomical Societyen_US
dc.relation.urihttp://adsabs.harvard.edu/abs/2017MNRAS.464.1146Hen_US
dc.relation.urihttp://arxiv.org/abs/1610.08318en_US
dc.relation.urihttp://dx.doi.org/10.1093/mnras/stw2337en_US
dc.rights2017 The authors & the Royal Astronomical Societyen_US
dc.titleGaLactic and extragalactic all-sky Murchison widefield array (GLEAM) survey I: A low-frequency extragalactic catalogueen_US
dc.typeArticleen_US
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