Development of a pulsar-based timescale

作者： G. Hobbs ¹ W. Coles ² R. N. Manchester ¹ M. J. Keith,1 R. M. Shannon ¹ D. Chen ³ M. Bailes,4 N. D. R. Bhat ⁵ S. Burke-Spolaor ⁶ D. Champion ⁷ A. Chaudhary ¹ A. Hotan ¹ J. Khoo,1 J. Kocz ⁴ Y. Levin ⁸ S.Oslowski ^1,4 B. Preisig ¹ V. Ravi ^1.9 J. E. Reynolds ¹ J. Sarkissian ¹ W. van Straten ⁴ J. P. W. Verbiest ⁷ D. Yardley ^1,10 X. P. You1 ¹
作者单位：

1. CSIRO Astronomy and Space Science, Australia Telescope National Facility, PO Box 76, Epping NSW 1710, Australia

2. Electrical and Computer Engineering, University of California at San Diego, La Jolla, California, U.S.A.

3. National Space Science Center, CAS, Beijing, China

4. Centre for Astrophysics and Supercomputing, Swinburne University of Technology, P.O. Box 218, Hawthorn, VIC 3122

5. International Centre for Radio Astronomy Research, Curtin University, Bentley, WA 6102, Australia

6. Jet Propulsion Laboratory, 4800 Oak Grove Dr, Pasadena CA 91109-8099, U.S.A.

7. Max-Planck-Institut f╱r Radioastronomie, Auf dem H╱gel 69, 53121, Bonn, Germany

8. School of Physics, Monash University, P. O. Box 27, Vic 3800, Australia

9. School of Physics, University of Melbourne, Vic 3010, Australia

10. Sydney Institute for Astronomy, School of Physics A29, The University of Sydney, NSW 2006, Australia

11. School for Physical Science and Technology, Southwest University, 2 Tiansheng Road, Chongqing 400715, China
提交时间：2016-12-22 14:19:11

摘要: 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 碋chelle 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.

pulsars: general time

分类： 地球科学 >> 空间物理学
引用： ChinaXiv:201612.00090 (或此版本 ChinaXiv:201612.00090V1)
DOI:10.12074/201612.00090V1
CSTR:32003.36.ChinaXiv.201612.00090.V1
推荐引用方式： G. Hobbs,W. Coles,R. N. Manchester,M. J. Keith,1 R. M. Shannon,D. Chen,M. Bailes,4 N. D. R. Bhat,S. Burke-Spolaor,D. Champion,A. Chaudhary,A. Hotan,J. Khoo,1 J. Kocz,Y. Levin,S.Oslowski,B. Preisig,V. Ravi,J. E. Reynolds,J. Sarkissian,W. van Straten,J. P. W. Verbiest,D. Yardley,X. P. You1.(2016).Development of a pulsar-based timescale.中国科学院科技论文预发布平台.[ChinaXiv:201612.00090] (点此复制)

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2016-12-22 14:19:11

ChinaXiv:201612.00090V1

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