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High-precision search for dark photon dark matter with the Parkes Pulsar Timing Array
Xiao Xue, Zi-Qing Xia, Xingjiang Zhu +20
The nature of dark matter remains obscure in spite of decades of experimental efforts. The mass of dark matter candidates can span a wide range, and its coupling with the Standard…
Constraining cosmological phase transitions with the Parkes Pulsar Timing Array
Xiao Xue, Ligong Bian, Jing Shu +15
A cosmological first-order phase transition is expected to produce a stochastic gravitational wave background. If the phase transition temperature is on the MeV scale, the power sp…
The Thousand-Pulsar-Array programme on MeerKAT: -- VI. Pulse widths of a large and diverse sample of radio pulsars
B. Posselt, A. Karastergiou, S. Johnston +14
We present pulse width measurements for a sample of radio pulsars observed with the MeerKAT telescope as part of the Thousand-Pulsar-Array (TPA) programme in the MeerTime project.…
On the evidence for a common-spectrum process in the search for the nanohertz gravitational-wave background with the Parkes Pulsar Timing Array
Boris Goncharov, R. M. Shannon, D. J. Reardon +26
A nanohertz-frequency stochastic gravitational-wave background can potentially be detected through the precise timing of an array of millisecond pulsars. This background produces l…
The Parkes pulsar timing array second data release: Timing analysis
D. J. Reardon, R. M. Shannon, A. D. Cameron +14
The main goal of pulsar timing array experiments is to detect correlated signals such as nanohertz-frequency gravitational waves. Pulsar timing data collected in dense monitoring c…
The Thousand-Pulsar-Array programme on MeerKAT -- V. Scattering analysis of single-component pulsars
L. S. Oswald, A. Karastergiou, B. Posselt +13
We have measured the scattering timescale, , and the scattering spectral index, , for 84 single-component pulsars. Observations were carried out with the MeerKAT telescope as…
The Planetary Ephemeris Program: Capability, Comparison, and Open Source Availability
John F. Chandler, James B. R. Battat, Thomas W. Murphy +3
We describe for the first time in the scientific literature the Planetary Ephemeris Program (PEP), an open-source general-purpose astrometric data analysis program. We discuss, in…
Eight new millisecond pulsars from the first MeerKAT globular cluster census
A. Ridolfi, T. Gautam, P. C. C. Freire +24
We have used the central 44 antennas of the new 64-dish MeerKAT radio telescope array to conduct a deep search for new pulsars in the core of nine globular clusters. This has led t…
The Relativistic Binary Programme on MeerKAT: Science objectives and first results
M. Kramer, I. H. Stairs, V. Venkatraman Krishnan +35
We describe the ongoing Relativistic Binary programme (RelBin), a part of the MeerTime large survey project with the MeerKAT radio telescope. RelBin is primarily focused on observa…
Measurements of pulse jitter and single-pulse variability in millisecond pulsars using MeerKAT
A. Parthasarathy, M. Bailes, R. M. Shannon +18
Using the state-of-the-art SKA precursor, the MeerKAT radio telescope, we explore the limits to precision pulsar timing of millisecond pulsars achievable due to pulse stochasticity…