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dc.contributor.authorHancock, Paul
dc.contributor.authorAnderson, Gemma
dc.contributor.authorWilliams, A.
dc.contributor.authorSokolowski, Marcin
dc.contributor.authorTremblay, S.E.
dc.contributor.authorRowlinson, A.
dc.contributor.authorCrosse, B.
dc.contributor.authorMeyers, B.W.
dc.contributor.authorLynch, Christene
dc.contributor.authorZic, A.
dc.contributor.authorBeardsley, A.P.
dc.contributor.authorEmrich, David
dc.contributor.authorFranzen, T.M.O.
dc.contributor.authorHorsley, L.
dc.contributor.authorJohnston-Hollitt, M.
dc.contributor.authorKaplan, D.L.
dc.contributor.authorKenney, D.
dc.contributor.authorMorales, M.F.
dc.contributor.authorPallot, D.
dc.contributor.authorSteele, K.
dc.contributor.authorTingay, Steven
dc.contributor.authorTrott, Cathryn
dc.contributor.authorWalker, Mia
dc.contributor.authorWayth, Randall
dc.contributor.authorWu, C.
dc.date.accessioned2021-07-23T08:04:35Z
dc.date.available2021-07-23T08:04:35Z
dc.identifier.citationHancock, P.J. and Anderson, G.E. and Williams, A. and Sokolowski, M. and Tremblay, S.E. and Rowlinson, A. and Crosse, B. et al. A VOEvent based automatic trigger system for the Murchison Widefield Array. Publications of the Astronomical Society of Australia. 36: Article No. E046.
dc.identifier.urihttp://hdl.handle.net/20.500.11937/84728
dc.identifier.doi10.1017/pasa.2019.40
dc.description.abstract

The Murchison Widefield Array (MWA) is an electronically steered low frequency ($<300$\,MHz) radio interferometer, with a `slew' time less than 8seconds. Low frequency ($\sim 100$\,MHz) radio telescopes are ideally suited for rapid-response follow-up of transients due to their large field of view, the inverted spectrum of coherent emission, and the fact that the dispersion delay between a 1GHz and 100MHz pulse is on the order of $1-10$\,min for dispersion measures of $100-2000$\,pc/cm$^3$. The MWA has previously been used to provide fast follow up for transient events including gamma-ray bursts, fast radio bursts, and gravitational waves, using systems that respond to gamma-ray coordinates network (GCN) packet-based notifications. We describe a system for automatically triggering MWA observations of such events, based on VOEvent triggers, which is more flexible, capable, and accurate than previous systems. The system can respond to external multi-messenger triggers, which makes it well-suited to searching for prompt coherent radio emission from gamma-ray bursts, the study of fast radio bursts and gravitational waves, single pulse studies of pulsars, and rapid follow-up of high-energy superflares from flare stars. The new triggering system has the capability to trigger observations in both the regular correlator mode (limited to $\geq 0.5$\,s integrations) or using the Voltage Capture System (VCS, $0.1$\,ms integration) of the MWA, and represents a new mode of operation for the MWA. The upgraded standard correlator triggering capability has been in use since MWA observing semester 2018B (July-Dec 2018), and the VCS and buffered mode triggers will become available for observing in a future semester.

dc.relation.urihttp://dx.doi.org/10.1017/pasa.2019.40
dc.relation.sponsoredbyhttp://purl.org/au-research/grants/arc/CE110001020
dc.relation.sponsoredbyhttp://purl.org/au-research/grants/arc/DE180100346
dc.subjectastro-ph.IM
dc.subjectastro-ph.IM
dc.titleA VOEvent based automatic trigger system for the Murchison Widefield Array
dc.typeJournal Article
dcterms.source.titlePublications of the Astronomical Society of Australia
dc.date.updated2021-07-23T08:04:34Z
curtin.note

© Astronomical Society of Australia 2019; published by Cambridge University Press.

curtin.departmentSchool of Electrical Engineering, Computing and Mathematical Sciences (EECMS)
curtin.accessStatusOpen access
curtin.facultyFaculty of Science and Engineering
curtin.contributor.orcidEmrich, David [0000-0002-4058-1837]
curtin.contributor.orcidHancock, Paul [0000-0002-4203-2946]
curtin.contributor.orcidAnderson, Gemma [0000-0001-6544-8007]
curtin.contributor.orcidSokolowski, Marcin [0000-0001-5772-338X]
curtin.contributor.orcidLynch, Christene [0000-0002-0494-192X]
curtin.contributor.orcidTingay, Steven [0000-0002-8195-7562]
curtin.contributor.orcidTrott, Cathryn [0000-0001-6324-1766]
curtin.contributor.orcidWayth, Randall [0000-0002-6995-4131]
curtin.contributor.orcidWalker, Mia [0000-0003-4077-6244]
curtin.contributor.researcheridEmrich, David [B-7002-2013]
curtin.contributor.researcheridHancock, Paul [G-8756-2014]
curtin.contributor.researcheridSokolowski, Marcin [B-5584-2013]
curtin.contributor.researcheridTingay, Steven [B-5271-2013]
curtin.contributor.scopusauthoridEmrich, David [36697878900]
curtin.contributor.scopusauthoridHancock, Paul [14527336500] [55958167000] [57193902921]
curtin.contributor.scopusauthoridAnderson, Gemma [10045028200]
curtin.contributor.scopusauthoridSokolowski, Marcin [8315206900]
curtin.contributor.scopusauthoridLynch, Christene [56927637600]
curtin.contributor.scopusauthoridTingay, Steven [7004903117]
curtin.contributor.scopusauthoridTrott, Cathryn [24438609500]
curtin.contributor.scopusauthoridWayth, Randall [8533270000]


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