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Development of a pulsar-based time-scale

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Hobbs, G., Coles, W., Manchester, R. N., Keith, M. J., Shannon, R. M., Chen, D., Bailes, M., Bhat, N. D. R., Burke-Spolaor, S., Champion, D., Chaudhary, A., Hotan, A., Khoo, J., Kocz, J., Levin, Y., Oslowski, S., Preisig, B., Ravi, V., Reynolds, J. E., Sarkissian, J., van Straten, W., Verbiest, J. P. W., Yardley, D., You, X. P.·2012·Monthly Notices of the Royal Astronomical Society

Abstract

Using observations of pulsars from the Parkes Pulsar Timing Array (PPTA) project we develop the first pulsar-based timescale that has a precision comparable to the uncertainties in international atomic timescales. Our ensemble of pulsars provides an Ensemble Pulsar Scale (EPS) analogous to the free atomic timescale Echelle Atomique Libre (EAL). The EPS can be used to detect fluctuations in atomic timescales and therefore can lead to a new realisation of Terrestrial Time, TT(PPTA11). We successfully follow features known to affect the frequency of the International Atomic Timescale (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 timescale.

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Metadata

Authors
Hobbs, G., Coles, W., Manchester, R. N., Keith, M. J., Shannon, R. M., Chen, D., Bailes, M., Bhat, N. D. R., Burke-Spolaor, S., Champion, D., Chaudhary, A., Hotan, A., Khoo, J., Kocz, J., Levin, Y., Oslowski, S., Preisig, B., Ravi, V., Reynolds, J. E., Sarkissian, J., van Straten, W., Verbiest, J. P. W., Yardley, D., & You, X. P.
Venue
Monthly Notices of the Royal Astronomical Society
Published
2012-12-21
Volume
427
Issue
4
Pages
2780-2787
ISSN
  • 0035-8711 (ISSN-L)
  • 1365-2966
OpenAlex
W2156209394
Cited by
186
References
1
FWCI
6.38
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Development of a pulsar-based time-scale. https://app.cochat.ai/papers/10.1111/j.1365-2966.2012.21946.x
The paper
Hobbs, G., Coles, W., Manchester, R. N., Keith, M. J., Shannon, R. M., Chen, D., Bailes, M., Bhat, N. D. R., Burke-Spolaor, S., Champion, D., Chaudhary, A., Hotan, A., Khoo, J., Kocz, J., Levin, Y., Oslowski, S., Preisig, B., Ravi, V., Reynolds, J. E., . . . You, X. P. (2012). Development of a pulsar-based time-scale. Monthly Notices of the Royal Astronomical Society. https://doi.org/10.1111/j.1365-2966.2012.21946.x

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.