The second data release from the European Pulsar Timing Array I. The dataset and timing analysis
Creators
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Antoniadis, J.1
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Babak, S.2
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Bak Nielsen, A.-S.3
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Bassa, C. G.4
- Berthereau, A.5
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Bonetti, M.6
- Bortolas, E.6
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Brook, P. R.7
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Burgay, M.8
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Caballero, R. N.9
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Chalumeau, A.6
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Champion, D. J.3
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Chanlaridis, S.1
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Chen, S.10
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Cognard, I.5
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Desvignes, G.3
- Falxa, M.2
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Ferdman, R. D.11
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Franchini, A.6
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Gair, J. R.12
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Goncharov, B.13
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Gopakumar, A.14
- Graikou, E.3
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Grießmeier, J.-M.5
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Guillemot, L.5
- Guo, Y. J.3
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Hu, H.3
- Iraci, F.15
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Izquierdo Villalba, D.6
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Jang, J.3
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Jawor, J.3
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Janssen, G. H.4
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Jessner, A.3
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Karuppusamy, R.3
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Keane, E. F.16
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Keith, M. J.17
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Kramer, M.3
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Krishnakumar, M. A.3
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Lackeos, K.3
- Lee, K. J.18
- Liu, K.3
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Liu, Y.19
- Lyne, A. G.17
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McKee, J. W.20
- Main, R. A.3
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Mickaliger, M. B.17
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Nitu, I. C.17
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Parthasarathy, A.3
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Perera, B. B. P.21
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Perrodin, D.8
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Petiteau, A.22
- Porayko, N. K.6
- Possenti, A.8
- Quelquejay, Leclere H.2
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Samajdar, A.23
- Sanidas, S. A.17
- Sesana, A.6
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Shaifullah, G.6
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Speri, L.12
- Spiewak, R.17
- Stappers, B. W.17
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Susarla, S. C.24
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Theureau, G.5
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Tiburzi, C.8
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van, der Wateren E.4
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Vecchio, A.7
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Venkatraman Krishnan, V.3
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Verbiest, J. P. W.25
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Wang, J.26
- Wang, L.17
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Wu, Z.19
- 1. Institute of Astrophysics, FORTH, N. Plastira 100, 70013, Heraklion, Greece
- 2. Université Paris Cité, CNRS, Astroparticule et Cosmologie, 75013 Paris, France
- 3. Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, 53121 Bonn, Germany
- 4. ASTRON, Netherlands Institute for Radio Astronomy, Oude Hoogeveensedijk 4, 7991 PD, Dwingeloo, The Netherlands
- 5. Laboratoire de Physique et Chimie de l'Environnement et de l'Espace, Université d'Orléans / CNRS, 45071 Orléans Cedex 02, France
- 6. Dipartimento di Fisica "G. Occhialini", Universitá degli Studi di Milano-Bicocca, Piazza della Scienza 3, I-20126 Milano, Italy
- 7. Institute for Gravitational Wave Astronomy and School of Physics and Astronomy, University of Birmingham, Edgbaston, Birmingham B15 992TT, UK
- 8. INAF - Osservatorio Astronomico di Cagliari, via della Scienza 5, 09047 Selargius (CA), Italy
- 9. Hellenic Open University, School of Science and Technology, 26335 Patras, Greece
- 10. Kavli Institute for Astronomy and Astrophysics, Peking University, Beijing 100871, P. R. China
- 11. School of Physics, Faculty of Science, University of East Anglia, Norwich NR4 7TJ, UK
- 12. Max Planck Institute for Gravitational Physics (Albert Einstein Institute), Am Mühlenberg 1, 14476 Potsdam, Germany
- 13. Gran Sasso Science Institute (GSSI), I-67100 L'Aquila, Italy
- 14. Department of Astronomy and Astrophysics, Tata Institute of Fundamental Research, Homi Bhabha Road, Navy Nagar, Colaba, Mumbai 400005, India
- 15. Department of Physics, Indian Institute of Technology Roorkee, Roorkee-247667, India
- 16. School of Physics, Trinity College Dublin, College Green, Dublin 2, D02 PN40, Ireland
- 17. Jodrell Bank Centre for Astrophysics, Department of Physics and Astronomy, University of Manchester, Manchester M13 9PL, UK
- 18. Department of Astronomy,School of Physics, Peking University, Beijing 100871, P. R. China
- 19. National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100101, P. R. China
- 20. E.A. Milne Centre for Astrophysics, University of Hull, Cottingham Road, Kingston-upon-Hull, HU6 7RX, UK
- 21. Arecibo Observatory, HC3 Box 53995, Arecibo, PR 00612, USA
- 22. IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
- 23. Institut für Physik und Astronomie, Universität Potsdam, Haus 28, Karl-Liebknecht-Str. 24/25, 14476, Potsdam, Germany
- 24. Ollscoil na Gaillimhe — University of Galway, University Road, Galway, H91 TK33, Ireland
- 25. Florida Space Institute, University of Central Florida, 12354 Research Parkway, Partnership 1 Building, Suite 214, Orlando, 32826-0650, FL, USA
- 26. Fakultät für Physik, Universität Bielefeld, Postfach 100131, 33501 Bielefeld, Germany
Description
Pulsar timing arrays offer a probe of the low-frequency gravitational wave spectrum (1−100 nanohertz), which is intimately connected to a number of markers that can uniquely trace the formation and evolution of the Universe. We present the dataset and the results of the timing analysis from the second data release of the European Pulsar Timing Array (EPTA). The dataset contains high-precision pulsar timing data from25 millisecond pulsars collected with the five largest radio telescopes in Europe, as well as the Large European Array for Pulsars. The dataset forms the foundation for the search for gravitational waves by the EPTA, presented in associated papers. We describe the dataset and present the results of the frequentist and Bayesian pulsar timing analysis for individual millisecond pulsars that have been observed over the last∼25 years.We discuss the improvements to the individual pulsar parameter estimates, as well as new measurements of the physical properties of these pulsars and their companions. This data release extends the dataset from EPTA Data Release 1 up to the beginning of 2021, with individual pulsar datasets with timespans ranging from 14 to 25 years. These lead to improved constraints on annual parallaxes, secular variation of the orbital period, and Shapiro delay for a number of sources. Based on these results, we derived astrophysical parameters that include distances, transverse velocities,binary pulsar masses, and annual orbital parallaxes.
Files
EPTA-DR2.zip
Files
(39.6 MB)
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Additional details
Related works
- Is required by
- Journal article: 10.1051/0004-6361/202346842 (DOI)
- Journal article: 10.1051/0004-6361/202346844 (DOI)
- Is source of
- Journal article: 10.1051/0004-6361/202346841 (DOI)
- Is supplemented by
- 10.5281/zenodo.8091568 (DOI)
- 10.5281/zenodo.8025019 (DOI)