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Periodicity search in the timing of the 25 millisecond pulsars from the second data release of the European Pulsar Timing Array
Iuliana Nitu, Michael Keith, David Champion +17
In this work, we investigated the presence of strictly periodic, as well as quasi-periodic signals, in the timing of the 25 millisecond pulsars from the EPTA DR2 dataset. This is e…
A Gaussian-processes approach to fitting for time-variable spherical solar wind in pulsar timing data
Iuliana C. Niţu, Michael J. Keith, Caterina Tiburzi +26
Propagation effects are one of the main sources of noise in high-precision pulsar timing. For pulsars below an ecliptic latitude of , the ionised plasma in the solar wind…
Comparing recent PTA results on the nanohertz stochastic gravitational wave background
The International Pulsar Timing Array Collaboration, G. Agazie, J. Antoniadis +242
The Australian, Chinese, European, Indian, and North American pulsar timing array (PTA) collaborations recently reported, at varying levels, evidence for the presence of a nanohert…
Periodic interstellar scintillation variations of PSRs~J06130200 and J0636+5128 associated with the Local Bubble shell
Yulan Liu, Robert A. Main, Joris P. W. Verbiest +11
Annual variations of interstellar scintillation can be modelled to constrain parameters of the ionized interstellar medium. If a pulsar is in a binary system, then investigating th…
The second data release from the European Pulsar Timing Array I. The dataset and timing analysis
J. Antoniadis, S. Babak, A. -S. Bak Nielsen +66
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 trac…
The second data release from the European Pulsar Timing Array III. Search for gravitational wave signals
J. Antoniadis, P. Arumugam, S. Arumugam +95
We present the results of the search for an isotropic stochastic gravitational wave background (GWB) at nanohertz frequencies using the second data release of the European Pulsar T…
Variable Scintillation Arcs of Millisecond Pulsars observed with the Large European Array for Pulsars
R. A. Main, J. Antoniadis, S. Chen +26
We present the first large sample of scintillation arcs in millisecond pulsars, analysing 12 sources observed with the Large European Array for Pulsars (LEAP), and the Effelsberg 1…
The second data release from the European Pulsar Timing Array: VI. Challenging the ultralight dark matter paradigm
Clemente Smarra, Boris Goncharov, Enrico Barausse +68
Pulsar Timing Array experiments probe the presence of possible scalar or pseudoscalar ultralight dark matter particles through decade-long timing of an ensemble of galactic millise…
The second data release from the European Pulsar Timing Array V. Search for continuous gravitational wave signals
J. Antoniadis, P. Arumugam, S. Arumugam +97
We present the results of a search for continuous gravitational wave signals (CGWs) in the second data release (DR2) of the European Pulsar Timing Array (EPTA) collaboration. The m…
Scintillation Arc from FRB 20220912A
Zi-Wei Wu, Robert A. Main, Wei-Wei Zhu +21
We present the interstellar scintillation analysis of fast radio burst (FRB) 20220912A during its extremely active episode in 2022 using data from the Five-hundred-meter Aperture S…
Pulsar Scintillation Studies with LOFAR: II. Dual-frequency scattering study of PSR J0826+2637 with LOFAR and NenuFAR
Ziwei Wu, William A. Coles, Joris P. W. Verbiest +28
Interstellar scattering (ISS) of radio pulsar emission can be used as a probe of the ionised interstellar medium (IISM) and causes corruptions in pulsar timing experiments. Two typ…
The Thousand-Pulsar-Array programme on MeerKAT -- VIII. The subpulse modulation of 1198 pulsars
X. Song, P. Weltevrede, A. Szary +13
We report on the subpulse modulation properties of 1198 pulsars using the Thousand-Pulsar-Array programme on MeerKAT. About 35% of the analysed pulsars exhibit drifting subpulses w…
Modelling Annual Scintillation Velocity Variations of FRB 20201124A
R. A. Main, S. Bethapudi, V. R. Marthi +5
Compact radio sources exhibit scintillation, an interference pattern arising from propagation through inhomogeneous plasma, where scintillation patterns encode the relative distanc…
The Thousand-Pulsar-Array program on MeerKAT -- IX. The time-averaged properties of the observed pulsar population
B. Posselt, A. Karastergiou, S. Johnston +14
We present the largest single survey to date of average profiles of radio pulsars, observed and processed using the same telescope and data reduction software. Specifically, we pre…
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…
Resolving the Emission Regions of the Crab Pulsar's Giant Pulses II. Evidence for Relativistic Motion
Rebecca Lin, Marten H. van Kerkwijk, Robert Main +3
The Crab Pulsar is the prime example of an emitter of giant pulses. These short, very bright pulses are thought to originate near the light cylinder, at from…
Plasma lensing near the eclipses of the Black Widow pulsar B1957+20
Fang Xi Lin, Robert Main, Dylan Jow +3
Recently, several eclipsing millisecond pulsars have been shown to experience strong and apparent weak lensing from the outflow of their ionized companions. Lensing can be a powerf…
DM-power: an algorithm for high precision dispersion measure with application to fast radio bursts
Hsiu-Hsien Lin, Robert Main, Ue-Li Pen +7
We present DM-power, a new method for precisely determining the dispersion measure (DM) of radio bursts, and apply it to the Fast Radio Burst (FRB) source FRB~20180916B. Motivated…
High frequency study of FRB 20180916B using the 100-m Effelsberg radio telescope
S. Bethapudi, L. G. Spitler, R. A. Main +2
FRB 20180916B is a repeating fast radio burst (FRB) with an activity period of 16.33 days. In previous observations ranging from MHz, the activity window was found…
Detection of quasi-periodic micro-structure in three millisecond pulsars with the Large European Array for Pulsars
K. Liu, J. Antoniadis, C. G. Bassa +24
We report on the detection of quasi-periodic micro-structure in three millisecond pulsars (MSPs), PSRs J1022+1001, J2145-0750 and J1744-1134, using high time resolution data acquir…
A Highly Variable Magnetized Environment in a Pulsar Binary resembling Fast Radio Bursts
Dongzi Li, Anna Bilous, Scott Ransom +2
Fast radio bursts (FRBs) are short, intense extragalactic radio bursts of unknown origin. Recent polarimetric studies have shown that a noticeable fraction of the repeating FRBs di…
Long-term scintillation studies of EPTA pulsars. I. Observations and basic results
Yulan Liu, Joris P. W. Verbiest, Robert A. Main +17
Interstellar scintillation analysis of pulsars allows us to probe the small-scale distribution and inhomogeneities of the ionized interstellar medium. Our priority is to present th…
Double-lens Scintillometry: The variable scintillation of pulsar B1508+55
Tim Sprenger, Robert Main, Olaf Wucknitz +2
We report on observations of PSR B1508+55's scintillation at the Effelsberg 100-m telescope spanning from early 2020 to early 2022. In the autumn of 2020, close to the time the pul…
Pulsar scintillation studies with LOFAR. I. The census
Ziwei Wu, Joris P. W. Verbiest, Robert A. Main +13
Context. Interstellar scintillation (ISS) of pulsar emission can be used both as a probe of the ionised interstellar medium (IISM) and cause corruptions in pulsar timing experiment…