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    Source Finding in the Era of the SKA (Precursors): Aegean 2.0

    265237.pdf (1.097Mb)
    Access Status
    Open access
    Authors
    Hancock, P.
    Trott, Cathryn
    Hurley-Walker, Natasha
    Date
    2018
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Hancock, P. and Trott, C. and Hurley-Walker, N. 2018. Source Finding in the Era of the SKA (Precursors): Aegean 2.0. Publications of the Astronomical Society of Australia.
    Source Title
    Publications of the Astronomical Society of Australia
    DOI
    10.1017/pasa.2018.3
    ISSN
    1323-3580
    School
    Curtin Institute of Radio Astronomy (Physics)
    Remarks

    © Astronomical Society of Australia 2018; published by Cambridge University Press.

    URI
    http://hdl.handle.net/20.500.11937/67297
    Collection
    • Curtin Research Publications
    Abstract

    In the era of the SKA precursors, telescopes are producing deeper, larger images of the sky on increasingly small time-scales. The greater size and volume of images place an increased demand on the software that we use to create catalogues, and so our source finding algorithms need to evolve accordingly. In this paper, we discuss some of the logistical and technical challenges that result from the increased size and volume of images that are to be analysed, and demonstrate how the Aegean source finding package has evolved to address these challenges. In particular, we address the issues of source finding on spatially correlated data, and on images in which the background, noise, and point spread function vary across the sky. We also introduce the concept of forced or prioritised fitting.

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