A pulsar-based time-scale from the International Pulsar Timing Array

被引：73

作者：

Hobbs, G. ^{[1
]}

Guo, L. ^{[2
]}

Caballero, R. N. ^{[3
,4
]}

Coles, W. ^{[5
]}

Lee, K. J. ^{[3
]}

Manchester, R. N. ^{[1
]}

Reardon, D. J. ^{[6
]}

Matsakis, D. ^{[7
]}

Tong, M. L. ^{[8
]}

Arzoumanian, Z. ^{[9
]}

Bailes, M. ^{[6
]}

Bassa, C. G. ^{[10
]}

Bhat, N. D. R. ^{[11
]}

Brazier, A. ^{[12
,13
]}

Burke-Spolaor, S. ^{[14
,15
]}

Champion, D. J. ^{[4
]}

Chatterjee, S. ^{[12
]}

Cognard, I ^{[16
,17
]}

Dai, S. ^{[1
]}

Desvignes, G. ^{[4
]}

Dolch, T. ^{[18
]}

Ferdman, R. D. ^{[19
]}

Graikou, E. ^{[4
]}

Guillemot, L. ^{[16
,17
]}

Janssen, G. H. ^{[10
,20
]}

Keith, M. J. ^{[21
]}

Kerr, M. ^{[22
]}

Kramer, M. ^{[4
]}

Lam, M. T. ^{[14
]}

Liu, K. ^{[4
]}

Lyne, A. ^{[21
]}

Lazio, T. J. W. ^{[22
]}

Lynch, R. ^{[14
,24
]}

McKee, J. W. ^{[4
]}

McLaughlin, M. A. ^{[14
,15
]}

Mingarelli, C. M. F. ^{[25
]}

Nice, D. J. ^{[26
]}

Oslowski, S. ^{[6
]}

Pennucci, T. T. ^{[23
]}

Perera, B. B. P. ^{[21
]}

Perrodin, D. ^{[27
]}

Possenti, A. ^{[27
,28
]}

Russell, C. J. ^{[29
]}

Sanidas, S. ^{[21
]}

Sesana, A. ^{[30
]}

Shaifullah, G. ^{[10
]}

Shannon, R. M. ^{[6
,31
]}

Simon, J. ^{[32
]}

Spiewak, R. ^{[6
]}

Stairs, I. H. ^{[33
]}

机构：

[1] CSIRO Astron & Space Sci, Australia Telescope Natl Facil, Box 76, Epping, NSW 1710, Australia

[2] Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China

[3] Peking Univ, Kavli Inst Astron & Astrophys, Beijing 100871, Peoples R China

[4] Max Planck Inst Radioastron, Hugel 69, D-53121 Bonn, Germany

[5] Univ Calif San Diego, Dept Elect & Comp Engn, La Jolla, CA 92093 USA

[6] Swinburne Univ Technol, Ctr Astrophys & Supercomp, POB 218, Hawthorn, Vic 3122, Australia

[7] US Naval Observ, Naval Res Lab, 4555 Overlook Ave SW, Washington, DC 20375 USA

[8] Chinese Acad Sci, Natl Time Serv Ctr, Xian 710600, Shaanxi, Peoples R China

[9] NASA, Astrophys Sci Div, Goddard Space Flight Ctr Green Belt, Greenbelt, MD 20771 USA

[10] ASTRON, Netherlands Inst Radio Astron, Oude Hoogeveensedijk 4, NL-7991 PD Dwingeloo, Netherlands

[11] Curtin Univ, Int Ctr Radio Astron Res, Bentley, WA 6102, Australia

[12] Cornell Univ, Cornell Ctr Astrophys & Planetary Sci, Ithaca, NY 14853 USA

[13] Cornell Univ, Cornell Ctr Adv Comp, Ithaca, NY 14853 USA

[14] West Virginia Univ, Dept Phys & Astron, Morgantown, WV 26506 USA

[15] West Virginia Univ, Ctr Gravitat Waves & Cosmol, Chestnut Ridge Res Bldg, Morgantown, WV 26505 USA

[16] Univ Orlians, CNRS, LPC2E, F-45071 Orleans, France

[17] PSL Univ, Observ Paris, Stn Radioastron Nancay, CNRS INSU, F-18330 Nancay, France

[18] Hillsdale Coll, Dept Phys, 33 E Coll St, Hillsdale, MI 49242 USA

[19] Univ East Anglia, Norwich Res Pk, Norwich NR4 7TJ, Norfolk, England

[20] Radboud Univ Nijmegen, IMAPP, Dept Astrophys, POB 9010, NL-6500 GL Nijmegen, Netherlands

[21] Univ Manchester, Jodrell Bank Ctr Astrophys, Manchester M13 9PL, Lancs, England

[22] Naval Res Lab, Space Sci Div, Washington, DC 20375 USA

[23] Eotvos Lorand Univ, Inst Phys, MTA ELTE Extragalat Astrophys Res Grp, Hungarian Acad Sci, Pazmany PS 1-A, H-1117 Budapest, Hungary

[24] Green Bank Observ, POB 2, Green Bank, WV 24944 USA

[25] Flatiron Inst, Ctr Computat Astrophys, 162 Fifth Ave, New York, NY 10010 USA

[26] Lafayette Coll, Phys Dept, Easton, PA 18901 USA

[27] INAF, Osservatorio Astron Cagliari, Via Sci 5, I-09047 Selargius, CA, Italy

[28] Univ Cagliari, Dip Fis, SP Monserrato Sestu Km 0-700, I-09042 Monserrato, Italy

[29] CSIRO Sci Comp, Australian Technol Pk,Lacked Bag 9013, Alexandria, NSW 1435, Australia

[30] Univ Birmingham, Sch Phys & Astron, Birmingham B15 2TT, W Midlands, England

[31] Australian Res Council, Ctr Excellence Gravitat Wave Discovery, Canberra, ACT, Australia

[32] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA

[33] Univ British Columbia, Dept Phys & Astron, 6224 Agr Rd, Vancouver, BC V6T 1Z1, Canada

[34] Univ Wisconsin, Dept Phys, Ctr Gravitat Cosmol & Astrophys, POB 413, Milwaukee, WI 53201 USA

[35] CALTECH, TAPIR, MC 350-17, Pasadena, CA 91125 USA

[36] Univ Paris Diderot, CNRS INSU, PSL Univ, Lab Univers & Theories LUTh,Observ Paris, 5 Pl Jules Janssen, F-92190 Meudon, France

[37] Chinese Acad Sci, Xinjiang Astron Observ, 150 Sci 1 St, Urumqi 830011, Xinjiang, Peoples R China

[38] Huazhong Univ Sci & Technol, Sch Phys, Wuhan 430074, Hubei, Peoples R China

[39] Monash Univ, Sch Phys & Astron, Monash Ctr Astrophys MoCA, Clayton, Vic 3800, Australia

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2020年 / 491卷 / 04期

基金：

美国国家科学基金会; 欧洲研究理事会; 中国国家自然科学基金;

关键词：

time; pulsars: general; GRAVITATIONAL-WAVES; MILLISECOND PULSAR; PRECISION; PACKAGE; TEMPO2; LIMITS; DISPERSION; NOISE; MODEL;

D O I：

10.1093/mnras/stz3071

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We have constructed a new time-scale, TT(IPTA16), based on observations of radio pulsars presented in the first data release from the International Pulsar Timing Array (IPTA). We used two analysis techniques with independent estimates of the noise models for the pulsar observations and different algorithms for obtaining the pulsar time-scale. The two analyses agree within the estimated uncertainties and both agree with TT(BIPM17), a post-corrected time-scale produced by the Bureau International des Poids et Mesures (BIPM). We show that both methods could detect significant errors in TT(BIPM17) if they were present. We estimate the stability of the atomic clocks from which TT(BIPM17) is derived using observations of four rubidium fountain clocks at the US Naval Observatory. Comparing the power spectrum of TT(IPTA16) with that of these fountain clocks suggests that pulsar-based time-scales are unlikely to contribute to the stability of the best time-scales over the next decade, but they will remain a valuable independent check on atomic time-scales. We also find that the stability of the pulsar-based time-scale is likely to be limited by our knowledge of solar-system dynamics, and that errors in TT(BIPM17) will not be a limiting factor for the primary goal of the IPTA, which is to search for the signatures of nano-Hertz gravitational waves.

引用

页码：5951 / 5965

页数：15

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