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The MeerKAT Pulsar Timing Array: First Data Release
Matthew T. Miles, Ryan M. Shannon, Matthew Bailes +15
We present the first 2.5 years of data from the MeerKAT Pulsar Timing Array (MPTA), part of MeerTime, a MeerKAT Large Survey Project. The MPTA aims to precisely measure pulse arriv…
Searches for Shapiro delay in seven binary pulsars using the MeerKAT telescope
Mohsen Shamohammadi, Matthew Bailes, Paulo C. C. Freire +14
Precision timing of millisecond pulsars in binary systems enables observers to detect the relativistic Shapiro delay induced by space time curvature. When favourably aligned, this…
The MSPSR catalogue: VLBA astrometry of 18 millisecond pulsars
H. Ding, A. T. Deller, B. W. Stappers +13
With unparalleled rotational stability, millisecond pulsars (MSPs) serve as ideal laboratories for numerous astrophysical studies, many of which require precise knowledge of the di…
Wideband timing of the Parkes Pulsar Timing Array UWL data
Małgorzata Curyło, Timothy T. Pennucci, Matthew Bailes +14
In 2018 an ultra-wide-bandwidth low-frequency (UWL) receiver was installed on the 64-m Parkes Radio Telescope enabling observations with an instantaneous frequency coverage from 70…
The Thousand-Pulsar-Array programme on MeerKAT -- X. Scintillation arcs of 107 pulsars
R. A. Main, A. Parthasarathy, S. Johnston +9
We present the detection of 107 pulsars with interstellar scintillation arcs at 856--1712\,MHz, observed with the MeerKAT Thousand Pulsar Array Programme. Scintillation arcs appear…
Evaluating the prevalence of spurious correlations in pulsar timing array datasets
Andrew Zic, George Hobbs, R. M. Shannon +13
Pulsar timing array collaborations have recently reported evidence for a noise process with a common spectrum among the millisecond pulsars in the arrays. The spectral properties o…
Consistency of the Parkes Pulsar Timing Array Signal with a Nanohertz Gravitational-wave Background
Boris Goncharov, Eric Thrane, Ryan M. Shannon +9
Pulsar timing array experiments have recently reported strong evidence for a common-spectrum stochastic process with a strain spectral index consistent with that expected of a nano…
Orbital dynamics and extreme scattering event properties from long-term scintillation observations of PSR J1603-7202
Kris Walker, Daniel J. Reardon, Eric Thrane +1
We model long-term variations in the scintillation of binary pulsar PSR J16037202, observed by the 64 m Parkes radio telescope (Murriyang) between 2004 and 2016. We find that th…
The MeerTime Pulsar Timing Array -- A Census of Emission Properties and Timing Potential
R. Spiewak, M. Bailes, M. T. Miles +17
MeerTime is a five-year Large Survey Project to time pulsars with MeerKAT, the 64-dish South African precursor to the Square Kilometre Array. The science goals for the programme in…
The eccentric millisecond pulsar, PSR J09556150 I: Pulse profile analysis, mass measurements and constraints on binary evolution
M. Serylak, V. Venkatraman Krishnan, P. C. C. Freire +17
PSR J09556150 is a member of a class of eccentric MSP+He WD systems (eMSPs), whose binary evolution is poorly understood and believed to be different to that of traditional MSP+…
Modelling annual scintillation arc variations in PSR J1643-1224 using the Large European Array for Pulsars
G. Mall, R. A. Main, J. Antoniadis +25
In this work we study variations in the parabolic scintillation arcs of the binary millisecond pulsar PSR J1643-1224 over five years using the Large European Array for Pulsars (LEA…
The International Pulsar Timing Array second data release: Search for an isotropic Gravitational Wave Background
J. Antoniadis, Z. Arzoumanian, S. Babak +123
We searched for an isotropic stochastic gravitational wave background in the second data release of the International Pulsar Timing Array, a global collaboration synthesizing decad…