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dc.contributor.authorJordan, C.
dc.contributor.authorMurray, S.
dc.contributor.authorTrott, Cathryn
dc.contributor.authorWayth, R.
dc.contributor.authorMitchell, D.
dc.contributor.authorRahimi, M.
dc.contributor.authorPindor, B.
dc.contributor.authorProcopio, P.
dc.contributor.authorMorgan, J.
dc.date.accessioned2017-10-30T08:16:17Z
dc.date.available2017-10-30T08:16:17Z
dc.date.created2017-10-30T08:03:07Z
dc.date.issued2017
dc.identifier.citationJordan, C. and Murray, S. and Trott, C. and Wayth, R. and Mitchell, D. and Rahimi, M. and Pindor, B. et al. 2017. Characterization of the ionosphere above the Murchison Radio Observatory using the Murchison Widefield Array. Monthly Notices of the Royal Astronomical Society. 471 (4): pp. 3974-3987.
dc.identifier.urihttp://hdl.handle.net/20.500.11937/57245
dc.identifier.doi10.1093/mnras/stx1797
dc.description.abstract

We detail new techniques for analysing ionospheric activity, using Epoch of Reionisation (EoR) datasets obtained with the Murchison Widefield Array (MWA), calibrated by the `Real-Time System' (RTS). Using the high spatial- and temporal-resolution information of the ionosphere provided by the RTS calibration solutions over 19 nights of observing, we find four distinct types of ionospheric activity, and have developed a metric to provide an `at a glance' value for data quality under differing ionospheric conditions. For each ionospheric type, we analyse variations of this metric as we reduce the number of pierce points, revealing that a modest number of pierce points is required to identify the intensity of ionospheric activity; it is possible to calibrate in real-time, providing continuous information of the phase screen. We also analyse temporal correlations, determine diffractive scales, examine the relative fractions of time occupied by various types of ionospheric activity, and detail a method to reconstruct the total electron content responsible for the ionospheric data we observe. These techniques have been developed to be instrument agnostic, useful for application on LOFAR and SKA-Low.

dc.publisherOxford University Press
dc.titleCharacterization of the ionosphere above the Murchison Radio Observatory using the Murchison Widefield Array
dc.typeJournal Article
dcterms.source.volume471
dcterms.source.number4
dcterms.source.startPage3974
dcterms.source.endPage3987
dcterms.source.issn0035-8711
dcterms.source.titleMonthly Notices of the Royal Astronomical Society
curtin.note

This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society ©: 2017 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.

curtin.departmentCurtin Institute of Radio Astronomy (Physics)
curtin.accessStatusFulltext not available


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