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

    245953_245953.pdf (300.9Kb)
    Access Status
    Open access
    Authors
    Franzen, T.
    Jackson, C.
    Callingham, J.
    Ekers, R.
    Hancock, P.
    Hurley-Walker, N.
    Morgan, J.
    Seymour, N.
    Wayth, Randall
    White, S.
    Bell, M.
    Dwarakanath, K.
    For, B.
    Gaensler, B.
    Hindson, L.
    Johnston-Hollitt, M.
    Kapinska, A.
    Lenc, E.
    McKinley, B.
    Offringa, A.
    Procopio, P.
    Staveley-Smith, L.
    Wu, C.
    Zheng, Q.
    Date
    2015
    Type
    Conference Paper
    
    Metadata
    Show full item record
    Citation
    Franzen, T. and Jackson, C. and Callingham, J. and Ekers, R. and Hancock, P. and Hurley-Walker, N. and Morgan, J. et al. 2015. Limits of noise and confusion in the MWA GLEAM year 1 survey, in Proceedings of EXTRA-RADSUR2015: The Many Facets of Extragalactic Radio Surveys: Towards New Scientific Challenges Conference, Oct 20-23 2015, Paper 053. Bologna, Italy: POS.
    Source Title
    Proceedings of Science
    School
    Department of Electrical and Computer Engineering
    Remarks

    This open access article is distributed under the Creative Commons license http://creativecommons.org/licenses/by-nc-nd/4.0/

    URI
    http://hdl.handle.net/20.500.11937/31218
    Collection
    • Curtin Research Publications
    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. 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.

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