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    VAST: An ASKAP survey for variables and slow transients

    193527_193527.pdf (765.5Kb)
    Access Status
    Open access
    Authors
    Murphy, Tara
    Chatterjee, Shami
    Kaplan, David L.
    Banyer, Jay
    Bell, Martin E.
    Bignall, Hayley E.
    Bower, Geoffrey C.
    Cameron, Robert A.
    Coward, David M.
    Cordes, James M.
    Croft, Steve
    Curran, James R.
    Djorgovski, S.G.
    Farrell, Sean A.
    Frail, Dale A.
    Gaensler, B.M.
    Galloway, Duncan K.
    Gendre, Bruce
    Green, Anne J.
    Hancock, Paul J.
    Johnston, Simon
    Kamble, Atish
    Law, Casey J.
    Lazio, T. Joseph W.
    Lo, Kitty K.
    Macquart, Jean-Pierre
    Rea, Na
    Rebbapragada, Umaa
    Reynolds, Cormac
    Ryder, Stuart D.
    Schmidt, Brian
    Soria, Roberto
    Stairs, Ingrid H.
    Tingay, Steven J.
    Torkelsson, Ulf
    Wagstaff, Kiri
    Walker, Mark
    Wayth, Rall B.
    Williams, Peter K.G.
    Date
    2013
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Murphy, Tara and Chatterjee, Shami and Kaplan, David L. and Banyer, Jay and Bell, Martin E. and Bignall, Hayley E. and Bower, Geoffrey C. et al. 2013. VAST: An ASKAP survey for variables and slow transients. Publications of the Astronomical Society of Australia. 30: e006.
    Source Title
    Publications of the Astronomical Society of Australia
    DOI
    10.1017/pasa.2012.006
    ISSN
    1323-3580
    URI
    http://hdl.handle.net/20.500.11937/40457
    Collection
    • Curtin Research Publications
    Abstract

    The Australian Square Kilometre Array Pathfinder (ASKAP) will give us an unprecedented opportunity to investigate the transient sky at radio wavelengths. In this paper we present VAST, an ASKAP survey for Variables and Slow Transients. VAST will exploit the wide-field survey capabilities of ASKAP to enable the discovery and investigation of variable and transient phenomena from the local to the cosmological, including flare stars, intermittent pulsars, X-ray binaries, magnetars, extreme scattering events, interstellar scintillation, radio supernovae, and orphan afterglows of gamma-ray bursts. In addition, it will allow us to probe unexplored regions of parameter space where new classes of transient sources may be detected. In this paper we review the known radio transient and variable populations and the current results from blind radio surveys. We outline a comprehensive program based on a multi-tiered survey strategy to characterise the radio transient sky through detection and monitoring of transient and variable sources on the ASKAP imaging timescales of 5 s and greater. We also present an analysis of the expected source populations that we will be able to detect with VAST.

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