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    Development of a Pulsar-Based Time-Scale

    189973_73151_Bhat___1__2780.full.pdf (888.5Kb)
    Access Status
    Open access
    Authors
    Hobbs, G.
    Coles, W.
    Manchester, R.
    Keith, M.
    Shannon, R.
    Chen, D.
    Bailes, M.
    Bhat, Ramesh
    Burke-Spolaor, S.
    Champion, D.
    Chaudhary, A.
    Hotan, A.
    Khoo, J.
    Kocz, J.
    Levin, Y.
    Oslowski, S.
    Preisig, B.
    Ravi, V.
    Reynolds, J.
    Sarkissian, J.
    van Straten, W.
    Verbiest, J.
    Yardley, D.
    You, X.
    Date
    2012
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Hobbs, G and Coles, W and Manchester, R and Keith, M and Shannon, R and Chen, D and Bailes, M. et al. 2012. Development of a Pulsar-Based Time-Scale. Monthly Notices of the Royal Astronomical Society 427 (4): pp. 2780-2787.
    Source Title
    Monthly Notices of the Royal Astronomical Society
    DOI
    10.1111/j.1365-2966.2012.21946.x
    ISSN
    0035-8711
    School
    International Centre for Radio Astronomy Research
    Remarks

    This article has been published in Monthly Notices of the Royal Astronomical Society. © 2012 The Authors. Published by Oxford University Press on behalf of Royal Astronomical Society. All rights reserved.

    URI
    http://hdl.handle.net/20.500.11937/38201
    Collection
    • Curtin Research Publications
    Abstract

    Using observations of pulsars from the Parkes Pulsar Timing Array (PPTA) project we develop the first pulsar-based time-scale that has a precision comparable to the uncertainties in International Atomic Time-scales (TAI). Our ensemble of pulsars provides an Ensemble Pulsar Scale (EPS) analogous to the free atomic time-scale Échelle Atomique Libre. The EPS can be used to detect fluctuations in atomic time-scales and therefore can lead to a new realization of Terrestrial Time, TT(PPTA11). We successfully follow features known to affect the frequency of the TAI, and we find marginally significant differences between TT(PPTA11) and TT(BIPM11). We discuss the various phenomena that lead to a correlated signal in the pulsar timing residuals and therefore limit the stability of the pulsar time-scale.

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