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dc.contributor.authorYardley, D.
dc.contributor.authorColes, W.
dc.contributor.authorHobbs, G.
dc.contributor.authorVerbiest, J.
dc.contributor.authorManchester R. N.
dc.contributor.authorvan Straten W.
dc.contributor.authorJenet F. A.
dc.contributor.authorBailes M.
dc.contributor.authorBhat, Ramesh
dc.contributor.authorBurke-Spolaor, S.
dc.contributor.authorChampion, D. J.
dc.contributor.authorHotan, Aidan
dc.contributor.authorOslowski, S.
dc.contributor.authorReynolds, J. E.
dc.contributor.authorSarkissian, J. M.
dc.date.accessioned2017-01-30T11:40:04Z
dc.date.available2017-01-30T11:40:04Z
dc.date.created2012-03-11T20:00:47Z
dc.date.issued2011
dc.identifier.citationYardley, D. and Coles, W. and Hobbs, G. and Verbiest, J. and Manchester R.N. and van Straten W. and Jenet F. A. et al. 2011. On detection of the stochastic gravitational-wave background using the Parkes pulsar timing array. Monthly Notices of the Royal Astronomical Society. 414 (2): pp. 1777-1787.
dc.identifier.urihttp://hdl.handle.net/20.500.11937/13890
dc.identifier.doi10.1111/j.1365-2966.2011.18517.x
dc.description.abstract

We search for the signature of an isotropic stochastic gravitational-wave background in pulsar timing observations using a frequency-domain correlation technique. These observations, which span roughly 12 yr, were obtained with the 64-m Parkes radio telescope augmented by public domain observations from the Arecibo Observatory. A wide range of signal processing issues unique to pulsar timing and not previously presented in the literature are discussed. These include the effects of quadratic removal, irregular sampling and variable errors which exacerbate the spectral leakage inherent in estimating the steep red spectrum of the gravitational-wave background. These observations are found to be consistent with the null hypothesis that no gravitational-wave background is present, with 76 per cent confidence. We show that the detection statistic is dominated by the contributions of only a few pulsars because of the inhomogeneity of this data set. The issues of detecting the signature of a gravitational-wave background with future observations are discussed.

dc.publisherWiley-Blackwell Publishing Ltd.
dc.subjectgravitational waves
dc.subjectstars: pulsars: general
dc.subjectmethods: data analysis
dc.titleOn detection of the stochastic gravitational-wave background using the Parkes pulsar timing array
dc.typeJournal Article
dcterms.source.volume414
dcterms.source.number2
dcterms.source.startPage1777
dcterms.source.endPage1787
dcterms.source.issn1365-2966
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 ©: 2011 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.

curtin.departmentCurtin Institute of Radio Astronomy
curtin.accessStatusOpen access


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