The Murchison Widefield Array Commissioning Survey: A Low-Frequency Catalogue of 14 110 Compact Radio Sources over 6 100 Square Degrees
- Hurley-Walker, Natasha
- Morgan, John
- Wayth, Randall
- Hancock, Paul
- Bell, M.
- BERNARDI, G.
- Bhat, Ramesh
- Briggs, F.
- Deshpande, A.
- Ewall-Wice, A.
- Feng, L.
- Hazelton, B.
- Hindson, L.
- Jacobs, D.
- KAPLAN, D.
- Kudryavtseva, Nadia
- Lenc, E.
- McKinley, B.
- Mitchell, D.
- Pindor, B.
- Procopio, P.
- Oberoi, D.
- Offringa, A.
- Ord, Stephen
- Riding, J.
- Bowman, J.
- Cappallo, R.
- Corey, B.
- Emrich, David
- Gaensler, B.
- Goeke, R.
- Greenhill, L.
- Hewitt, J.
- Johnston-Hollitt, M.
- Kasper, J.
- Kratzenberg, E.
- Lonsdale, C.
- Lynch, Mervyn
- McWhirter, R.
- Morales, M.
- Morgan, E.
- Prabu, T.
- Rogers, A.
- Roshi, A.
- Shankar, U.
- Srivani, K.
- Subrahmanyan, R.
- Tingay, Steven
- Waterson, Mark
- Webster, R.
- Whitney, A.
- Williams, Andrew
- Williams, C.
DOIAbstract
We present the results of an approximately 6 100 deg2 104–196 MHz radio sky survey performed with the Murchison Widefield Array during instrument commissioning between 2012 September and 2012 December: theMWACS. The data were taken as meridian drift scans with two different 32-antenna sub-arrays that were available during the commissioning period. The survey covers approximately 20.5 h< RA < 8.5 h, −58◦ < Dec < −14◦over three frequency bands centredon 119, 150 and 180 MHz, with image resolutions of 6–3 arcmin. The catalogue has 3 arcmin angular resolution and a typical noise level of 40 mJy beam−1, with reduced sensitivity near the field boundaries and bright sources. We describe the data reduction strategy, based upon mosaicked snapshots, ...
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