University of Hertfordshire

Limits of noise and confusion in the MWA GLEAM year 1 survey

Research output: Contribution to conferencePaper

Documents

  • 1604.04447

    Accepted author manuscript, 266 KB, PDF document

  • T. M. O. Franzen
  • C. A. Jackson
  • J. R. Callingham
  • R. D. Ekers
  • P. J. Hancock
  • N. Hurley-Walker
  • J. Morgan
  • N. Seymour
  • R. B. Wayth
  • S. V. White
  • M. E. Bell
  • K. S. Dwarakanath
  • B. For
  • B. M. Gaensler
  • L. Hindson
  • M. Johnston-Hollitt
  • A. D. Kapinska
  • E. Lenc
  • B. McKinley
  • A. R. Offringa
  • And 4 others
  • P. Procopio
  • L. Staveley-Smith
  • C. Wu
  • Q. Zheng
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Original languageEnglish
Publication statusPublished - 20 Oct 2015
EventThe Many Facests of Extragalactiv Radio Surveys: Towards New Scientific Challenges - CNR RESEARCH AREA, 101 VIA GOBETTI, Bologne, Italy
Duration: 20 Oct 201523 Oct 2015

Conference

ConferenceThe Many Facests of Extragalactiv Radio Surveys: Towards New Scientific Challenges
CountryItaly
CityBologne
Period20/10/1523/10/15

Abstract

The GaLactic and Extragalactic All-sky MWA survey (GLEAM) is a new relatively low resolution, contiguous 72-231 MHz survey of the entire sky south of declination +25 deg. In this paper, we outline one approach to determine the relative contribution of system noise, classical confusion and sidelobe confusion in GLEAM images. An understanding of the noise and confusion properties of GLEAM is essential if we are to fully exploit GLEAM data and improve the design of future low-frequency surveys. Our early results indicate that sidelobe confusion dominates over the entire frequency range, implying that enhancements in data processing have the potential to further reduce the noise.

Notes

T.M.O. Franzen, C.A. Jackson, J.R. Callingham, R.D. Ekers, P.J. Hancock, N. Hurley-Walker, J. Morgan, N. Seymour, R.B. Wayth, S.V. White, M.E. Bell, K.S. Dwarakanath, B.Q. For, B.M. Gaensler, L. Hindson, M. Johnston-Hollitt, A.D. Kapinska, E. Lenc, B. McKinley, A.R. Offringa, P. Procopio, L. Staveley-Smith, C. Wu, Q. Zheng, ‘Limits of noise and confusion in the MWA GLEAM year 1 survey’, paper presented at the The Many Facests of Extragalactiv Radio Surveys: Towards New Scientific Challenges, Bologna, Italy, 20-23 October, 2015.

ID: 10291654