The MWA GLEAM 4 Jy sample; a new large, bright radio source sample at 151 MHz
MetadataShow full item record
This open access article is distributed under the Creative Commons license http://creativecommons.org/licenses/by-nc-nd/4.0/
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 firstuser 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.
Showing items related by title, author, creator and subject.
Murphy, T.; Kaplan, D.; Croft, S.; Lynch, C.; Callingham, J.; Bannister, K.; Bell, M.; Hurley-Walker, Natasha; Hancock, Paul; Line, J.; Rowlinson, A.; Lenc, E.; Intema, H.; Jagannathan, P.; Ekers, Ronald; Tingay, Steven; Yuan, F.; Wolf, C.; Onken, C.; Dwarakanath, K.; For, B.; Gaensler, B.; Hindson, L.; Johnston-Hollitt, M.; Kapinska, A.; McKinley, B.; Morgan, J.; Offringa, A.; Procopio, P.; Staveley-Smith, L.; Wayth, Randall; Wu, C.; Zheng, Q. (2017)We present a search for transient and highly variable sources at low radio frequencies (150-200 MHz) that explores long timescales of 1-3 years. We conducted this search by comparing the TIFR GMRT Sky Survey Alternative ...
Callingham, J.; Ekers, Ronald; Gaensler, B.; Line, J.; Hurley-Walker, Natasha; Sadler, E.; Tingay, Steven; Hancock, Paul; Bell, M.; Dwarakanath, K.; For, B.; Franzen, Thomas; Hindson, L.; Johnston-Hollitt, M.; Kapinska, A.; Lenc, E.; McKinley, B.; Morgan, J.; Offringa, A.; Procopio, P.; Staveley-Smith, L.; Wayth, Randall; Wu, C.; Zheng, Q. (2017)We present a sample of 1483 sources that display spectral peaks between 72 MHz and 1.4 GHz, selected from the GaLactic and Extragalactic All-sky Murchison Widefield Array (GLEAM) survey. The GLEAM survey is the widest ...
Molecular line mapping of the giant molecular cloud associated with RCW 106-IV. Ammonia towards dust emissionLowe, V.; Cunningham, M.; Urquhart, J.; Marshall, J.; Horiuchi, S.; Lo, N.; Walsh, Andrew; Jordan, C.; Jones, P.; Hill, T. (2014)Here we report observations of the two lowest inversion transitions of ammonia (NH3) with the 70-m Tidbinbilla radio telescope. The aim of the observations is to determine the kinetic temperatures in the dense clumps of ...