The MWA GLEAM 4Jy Sample; a new large, bright radio source sample at 151 MHz

Jackson, C A, Franzen, T M O, Seymour, N, White, S V, Murphy, Tara, Sadler, E M, Callingham, J R, Hunstead, R W, Hughes, J, Wall, J V, Bell, M E, Dwarakanath, K S, For, B-Q, Gaensler, B M, Hancock, P J, Hindson, L, Hurley-Walker, N, Johnston-Hollitt, M, Kapinska, A D, Lenc, E, McKinley, B, Morgan, J, Offringa, A R, Procopio, P, Staveley-Smith, L, Wayth, R B, Wu, C and Zheng, Q (2015) The MWA GLEAM 4Jy Sample; a new large, bright radio source sample at 151 MHz. In: The Many Facests of Extragalactiv Radio Surveys: Towards New Scientific Challenges, 2015-10-20 - 2015-10-23, CNR RESEARCH AREA, 101 VIA GOBETTI.
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This paper outlines how the new GaLactic and Extragalactic All-sky MWA Survey (GLEAM, Wayth et al. 2015), observed by the Murchison Widefield Array covering the frequency range 72 - 231 MHz, allows identification of a new large, complete, sample of more than 2000 bright extragalactic radio sources selected at 151 MHz. With a flux density limit of 4 Jy this sample is significantly larger than the canonical fully-complete sample, 3CRR (Laing, Riley & Longair 1983). In analysing this small bright subset of the GLEAM survey we are also providing a first user check of the GLEAM catalogue ahead of its public release (Hurley-Walker et al. in prep). Whilst significant work remains to fully characterise our new bright source sample, in time it will provide important constraints to evolutionary behaviour, across a wide redshift and intrinsic radio power range, as well as being highly complementary to results from targeted, small area surveys.


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