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dc.contributor.authorNg, C.
dc.contributor.authorBailes, M.
dc.contributor.authorBates, S.
dc.contributor.authorBhat, Ramesh
dc.contributor.authorBurgay, M.
dc.contributor.authorBurke-Spolaor, S.
dc.contributor.authorChampion, D.
dc.contributor.authorCoster, P.
dc.contributor.authorJohnston, S.
dc.contributor.authorKeith, M.
dc.contributor.authorKramer, M.
dc.contributor.authorLevin, L.
dc.contributor.authorPetroff, E.
dc.contributor.authorPossenti, A.
dc.contributor.authorStappers, B.
dc.contributor.authorvan Straten, W.
dc.contributor.authorThornton, D.
dc.contributor.authorTiburzi, C.
dc.contributor.authorBassa, C.
dc.contributor.authorFreire, P.
dc.contributor.authorGuillemot, L.
dc.contributor.authorLyne, A.
dc.contributor.authorTauris, T.
dc.contributor.authorShannon, R.
dc.contributor.authorWex, N.
dc.date.accessioned2017-01-30T13:49:02Z
dc.date.available2017-01-30T13:49:02Z
dc.date.created2014-04-16T20:00:56Z
dc.date.issued2014
dc.identifier.citationNg, C. and Bailes, .M and Bates, S.D. and Bhat, N.D.R. and Burgay, M. and Burke-Spolaor, S. and Champion, D.J. and Coster, P. and Johnston, S. and Keith, M.J. and Kramer, M. and Levin, L. and Petroff, E. and Possenti, A. and Stappers, B.W. and van Straten, W. and Thornton, D. and Tiburzi, C. and Bassa, C.G. and Freire, P.C.C. and Guillemot, L. and Lyne, A.G. and Tauris, T.M. and Shannon, R.M. and Wex, N. 2014. The High Time Resolution Universe pulsar survey – X. Discovery of four millisecond pulsars and updated timing solutions of a further 12. Monthly Notices of the Royal Astronomical Society. 439 (2): pp. 1865-1883.
dc.identifier.urihttp://hdl.handle.net/20.500.11937/35338
dc.identifier.doi10.1093/mnras/stu067
dc.description.abstract

We report on the discovery of four millisecond pulsars (MSPs) in the High Time Resolution Universe (HTRU) pulsar survey being conducted at the Parkes 64 m radio telescope. All four MSPs are in binary systems and are likely to have white dwarf companions. In addition, we present updated timing solutions for 12 previously published HTRU MSPs, revealing new observational parameters such as five proper motion measurements and significant temporal dispersion measure variations in PSR J1017-7156. We discuss the case of PSR J1801-3210, which shows no significant period derivative P after four years of timing data. Our best-fitting solution shows a P of the order of 10-23, an extremely small number compared to that of a typical MSP. However, it is likely that the pulsar lies beyond the Galactic Centre, and an unremarkable intrinsic P is reduced to close to zero by the Galactic potential acceleration. Furthermore, we highlight the potential to employ PSR J1801-3210 in the strong equivalence principle test due to its wide and circular orbit. In a broader comparison with the known MSP population, we suggest a correlation between higher mass functions and the presence of eclipses in ‘very low mass binary pulsars’, implying that eclipses are observed in systems with high orbital inclinations. We also suggest that the distribution of the total mass of binary systems is inversely related to the Galactic height distribution. Finally, we report on the first detection of PSRs J1543-5149 and J1811-2404 as gamma-ray pulsars.

dc.publisherOxford University Press
dc.subjectpulsars: individual: PSR J1801−3210
dc.subjectpulsars: individual: PSR J1017−7156
dc.subjectpulsars: individual: PSR J1543−5149
dc.subjectstars: neutron
dc.subjectpulsars: individual: PSR J1811−2405
dc.subjectpulsars: general
dc.titleThe High Time Resolution Universe pulsar survey – X. Discovery of four millisecond pulsars and updated timing solutions of a further 12
dc.typeJournal Article
dcterms.source.volume439
dcterms.source.startPage1865
dcterms.source.endPage1883
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, © 2014 The Authors. Published by Oxford University Press on behalf of Royal Astronomical Society. All rights reserved.

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curtin.accessStatusOpen access


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