 |
A pulsar-based time-scale from the International Pulsar Timing Array
G. Hobbs
L. Guo
R.N. Caballero
W. Coles
K.J. Lee
R.N. Manchester
D.J. Reardon
D. Matsakis
M.L. Tong
Z. Arzoumanian
M. Bailes
C.G. Bassa
N.D.R. Bhat
A. Brazier
S. Burke-Spolaor
D.J. Champion
S. Chatterjee
I. Cognard
1, 2
S. Dai
G. Desvignes
T. Dolch
R.D. Ferdman
E. Graikou
L. Guillemot
1, 2
G.H. Janssen
M.J. Keith
M. Kerr
M. Kramer
M.T. Lam
K. Liu
A. Lyne
T.J.W. Lazio
R. Lynch
J.W. Mckee
M.A. Mclaughlin
C.M.F. Mingarelli
D.J. Nice
S. Os Lowski
T.T. Pennucci
B.B.P. Perera
D. Perrodin
A. Possenti
C.J. Russell
S. Sanidas
A. Sesana
G. Shaifullah
R.M. Shannon
J. Simon
R. Spiewak
I.H. Stairs
B.W. Stappers
J.K. Swiggum
S.R. Taylor
G. Theureau
1, 2, 3
L. Toomey
R. van Haasteren
J.B. Wang
Y. Wang
X.J. Zhu
1
LPC2E - Laboratoire de Physique et Chimie de l'Environnement et de l'Espace (3A, Avenue de la Recherche Scientifique 45071 Orléans cedex 2 - France)
- OSUC - Observatoire des Sciences de l'Univers en région Centre (Campus Géosciences, 1A rue de la Férollerie, 45071 Orléans - France)
- INSU - CNRS - Institut national des sciences de l'Univers (INSU-CNRS 3 rue Michel-Ange, 75794 Paris Cedex 16 - France)
- CNRS - Centre National de la Recherche Scientifique : UMS3116 (France)
- UO - Université d'Orléans (Château de la Source - Avenue du Parc Floral - BP 6749 - 45067 Orléans cedex 2 - France)
- Observatoire de Paris (61 Av de l'Observatoire 75014 PARIS - France)
- PSL - PSL Research University (France)
- CNES - Centre National d’Études Spatiales [Paris] : UMR 7328 (Siège social : 2 place Maurice Quentin, 75039 Paris - France)
2
USN - Unité Scientifique de la Station de Nançay (18330 NANCAY - France)
- UO - Université d'Orléans : USR 704 (Château de la Source - Avenue du Parc Floral - BP 6749 - 45067 Orléans cedex 2 - France)
- OSUC - Observatoire des Sciences de l'Univers en région Centre (Campus Géosciences, 1A rue de la Férollerie, 45071 Orléans - France)
- INSU - CNRS - Institut national des sciences de l'Univers (INSU-CNRS 3 rue Michel-Ange, 75794 Paris Cedex 16 - France)
- CNRS - Centre National de la Recherche Scientifique : UMS3116 (France)
- UO - Université d'Orléans (Château de la Source - Avenue du Parc Floral - BP 6749 - 45067 Orléans cedex 2 - France)
- Observatoire de Paris (61 Av de l'Observatoire 75014 PARIS - France)
- PSL - PSL Research University (France)
- INSU - CNRS - Institut national des sciences de l'Univers : USR 704 (INSU-CNRS 3 rue Michel-Ange, 75794 Paris Cedex 16 - France)
- Observatoire de Paris : USR 704 (61 Av de l'Observatoire 75014 PARIS - France)
- PSL - PSL Research University (France)
- CNRS - Centre National de la Recherche Scientifique : USR 704 (France)
3
LUTH (UMR_8102) - Laboratoire Univers et Théories (5 place Jules Janssen 92195 Meudon cedex - France)
- INSU - CNRS - Institut national des sciences de l'Univers (INSU-CNRS 3 rue Michel-Ange, 75794 Paris Cedex 16 - France)
- Observatoire de Paris (61 Av de l'Observatoire 75014 PARIS - France)
- PSL - PSL Research University (France)
- UPD7 - Université Paris Diderot - Paris 7 : UMR_8102 (5 rue Thomas-Mann - 75205 Paris cedex 13 - France)
- CNRS - Centre National de la Recherche Scientifique : UMR_8102 (France)
Abstract : 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.
Keywords :
time
pulsars: general
Document type :
Journal articles
Complete list of metadatas
https://hal.archives-ouvertes.fr/hal-02417063
Contributor : Inspire Hep <>
Submitted on : Wednesday, December 18, 2019 - 1:48:38 AM
Last modification on : Wednesday, April 1, 2020 - 3:40:27 AM
Contributor : Inspire Hep <>
Submitted on : Wednesday, December 18, 2019 - 1:48:38 AM
Last modification on : Wednesday, April 1, 2020 - 3:40:27 AM
Links full text
Identifiers
- HAL Id : hal-02417063, version 1
- INSPIRE : 1762328
- DOI : 10.1093/mnras/stz3071
- ARXIV : 1910.13628
Citation
G. Hobbs, L. Guo, R.N. Caballero, W. Coles, K.J. Lee, et al.. A pulsar-based time-scale from the International Pulsar Timing Array. Mon.Not.Roy.Astron.Soc., 2020, 491 (4), pp.5951-5965. ⟨10.1093/mnras/stz3071⟩. ⟨hal-02417063⟩
Metrics
Record views
