1. The Parkes Pulsar Timing Array project: second data release
- Author
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Kerr, Matthew, Reardon, Daniel J, Hobbs, George, Shannon, Ryan M, Manchester, Richard N, Dai, Shi, Russell, Christopher J, Zhang, Songbo, van Straten, Willem, Osłowski, Stefan, Parthasarathy, Aditya, Spiewak, Renee, Bailes, Matthew, Bhat, ND Ramesh, Cameron, Andrew D, Coles, William A, Dempsey, James, Deng, Xinping, Goncharov, Boris, Kaczmarek, Jane F, Keith, Michael J, Lasky, Paul D, Lower, Marcus E, Preisig, Brett, Sarkissian, John Mihran, Toomey, Lawrence, Wang, Hongguang, Wang, Jingbo, Zhang, Lei, and Zhu, Xingjiang
- Subjects
Astronomical Sciences ,Physical Sciences ,gravitational waves ,instrumentation: miscellaneous ,methods: observational ,pulsars: general ,Astronomical and Space Sciences ,Other Physical Sciences ,Astronomy & Astrophysics ,Astronomical sciences ,Particle and high energy physics - Abstract
Abstract: We describe 14 yr of public data from the Parkes Pulsar Timing Array (PPTA), an ongoing project that is producing precise measurements of pulse times of arrival from 26 millisecond pulsars using the 64-m Parkes radio telescope with a cadence of approximately 3 weeks in three observing bands. A comprehensive description of the pulsar observing systems employed at the telescope since 2004 is provided, including the calibration methodology and an analysis of the stability of system components. We attempt to provide full accounting of the reduction from the raw measured Stokes parameters to pulse times of arrival to aid third parties in reproducing our results. This conversion is encapsulated in a processing pipeline designed to track provenance. Our data products include pulse times of arrival for each of the pulsars along with an initial set of pulsar parameters and noise models. The calibrated pulse profiles and timing template profiles are also available. These data represent almost 21 000 h of recorded data spanning over 14 yr. After accounting for processes that induce time-correlated noise, 22 of the pulsars have weighted root-mean-square timing residuals of$
- Published
- 2020