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The International Pulsar Timing Array: Second data release

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arxiv 1909.04534 v1 pith:YVVSWZNC submitted 2019-09-10 astro-ph.HE

B. B. P. Perera , M. E. DeCesar , P. B. Demorest , M. Kerr , L. Lentati , D. J. Nice , S. Oslowski , S. M. Ransom
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M. J. Keith Z. Arzoumanian M. Bailes P. T. Baker C. G. Bassa N. D. R. Bhat A. Brazier M. Burgay S. Burke-Spolaor R. N. Caballero D. J. Champion S. Chatterjee S. Chen I. Cognard J. M. Cordes K. Crowter S. Dai G. Desvignes T. Dolch R. D. Ferdman E. C. Ferrara E. Fonseca J. M. Goldstein E. Graikou L. Guillemot J. S. Hazboun G. Hobbs H. Hu K. Islo G. H. Janssen R. Karuppusamy M. Kramer M. T. Lam K. J. Lee K. Liu J. Luo A. G. Lyne R. N. Manchester J. W. McKee M. A. McLaughlin C. M. F. Mingarelli A. P. Parthasarathy T. T. Pennucci D. Perrodin A. Possenti D. J. Reardon C. J. Russell S. A. Sanidas A. Sesana G. Shaifullah R. M. Shannon X. Siemens J. Simon R. Spiewak I. H. Stairs B. W. Stappers J. K. Swiggum S. R. Taylor G. Theureau C. Tiburzi M. Vallisneri A. Vecchio J. B. Wang S. B. Zhang L. Zhang W. W. Zhu X. J. Zhu
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In this paper, we describe the International Pulsar Timing Array second data release, which includes recent pulsar timing data obtained by three regional consortia: the European Pulsar Timing Array, the North American Nanohertz Observatory for Gravitational Waves, and the Parkes Pulsar Timing Array. We analyse and where possible combine high-precision timing data for 65 millisecond pulsars which are regularly observed by these groups. A basic noise analysis, including the processes which are both correlated and uncorrelated in time, provides noise models and timing ephemerides for the pulsars. We find that the timing precisions of pulsars are generally improved compared to the previous data release, mainly due to the addition of new data in the combination. The main purpose of this work is to create the most up-to-date IPTA data release. These data are publicly available for searches for low-frequency gravitational waves and other pulsar science.

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Cited by 4 Pith papers

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    astro-ph.CO 2025-05 conditional novelty 6.0 of 10

    Using NANOGrav 15-year and IPTA second data release, this paper sets a 68% confidence lower bound of 10^-19 GeV on the Lorentz-violating scale M_LV in a modified gravity model.

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    astro-ph.CO 2025-02 conditional novelty 5.0 of 10

    For non-minimally coupled Palatini R^2 inflation with a runaway potential, the predicted primordial gravitational wave spectrum has two flat plateaus connected by a kination boost, and it becomes more observable as th...

  4. The SKAO Pulsar Timing Array

    astro-ph.IM 2026-07 accept novelty 3.5 of 10

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