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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…
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…
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…
Propagation effects at low frequencies seen in the LOFAR long-term monitoring of the periodically active FRB 20180916B
A. Gopinath, C. G. Bassa, Z. Pleunis +6
LOFAR (LOw Frequency ARray) has previously detected bursts from the periodically active, repeating fast radio burst (FRB) source FRB 20180916B down to unprecedentedly low radio fre…
Timing of Pulsars in the Globular Cluster Omega Centauri
S. Dai, S. Johnston, M. Kerr +4
We present the timing of the first five millisecond pulsars discovered in the globular cluster Omega Centauri and the discovery of a pulsar with a spin period of 3.68 ms. With a ti…
A Census of Rotating Radio Transients at 150 MHz with the Irish LOFAR Station
D. J. McKenna, E. F. Keane, P. T. Gallagher +1
Rotating radio transients (RRATs) are neutron stars that emit detectable radio bursts sporadically. They are statistically distinct in the neutron star population, in many observab…
The TRAPUM L-band survey for pulsars in Fermi-LAT gamma-ray sources
C. J. Clark, R. P. Breton, E. D. Barr +35
More than 100 millisecond pulsars (MSPs) have been discovered in radio observations of gamma-ray sources detected by the Fermi Large Area Telescope (LAT), but hundreds of pulsar-li…
Radio detection of an elusive millisecond pulsar in the Globular Cluster NGC 6397
Lei Zhang, Alessandro Ridolfi, Harsha Blumer +32
We report the discovery of a new 5.78 ms-period millisecond pulsar (MSP), PSR J1740-5340B (NGC 6397B), in an eclipsing binary system discovered with the Parkes radio telescope (now…
TRAPUM discovery of thirteen new pulsars in NGC 1851 using MeerKAT
A. Ridolfi, P. C. C. Freire, T. Gautam +27
We report the discovery of 13 new pulsars in the globular cluster NGC 1851 by the TRAPUM Large Survey Project using the MeerKAT radio telescope. The discoveries consist of six isol…
A MeerKAT, e-MERLIN, H.E.S.S. and Swift search for persistent and transient emission associated with three localised FRBs
James O. Chibueze, M. Caleb, L. Spitler +156
We report on a search for persistent radio emission from the one-off Fast Radio Burst (FRB) 20190714A, as well as from two repeating FRBs, 20190711A and 20171019A, using the MeerKA…
Timing observations of three Galactic millisecond pulsars
D. R. Lorimer, A. M. Kawash, P. C. C. Freire +16
We report observed and derived timing parameters for three millisecond pulsars (MSPs) from observations collected with the Parkes 64-m telescope, Murriyang. The pulsars were found…
The Location of Young Pulsar PSR J08372454: Galactic Halo or Local Supernova Remnant?
Nihan Pol, Sarah Burke-Spolaor, Natasha Hurley-Walker +8
We present the discovery and timing of the young (age kyr) pulsar PSR J08372454. Based on its high latitude () and dispersion measure (DM ~p…
Constraints on wide-band radiative changes after a glitch in PSR J1452-6036
F. Jankowski, E. F. Keane, B. W. Stappers
We present high-sensitivity, wide-band observations (704 to 4032 MHz) of the young to middle-aged radio pulsar J1452-6036, taken at multiple epochs before and, serendipitously, sho…
Dispersion measure variability for 36 millisecond pulsars at 150MHz with LOFAR
J. Y. Donner, J. P. W. Verbiest, C. Tiburzi +19
Radio pulses from pulsars are affected by plasma dispersion, which results in a frequency-dependent propagation delay. Variations in the magnitude of this effect lead to an additio…
The new magnetar SGR J1830-0645 in outburst
F. Coti Zelati, A. Borghese, G. L. Israel +13
The detection of a short hard X-ray burst and an associated bright soft X-ray source by the Swift satellite in 2020 October heralded a new magnetar in outburst, SGR J1830-0645. Pul…
Observing superluminous supernovae and long gamma ray bursts as potential birthplaces of repeating fast radio bursts
G. H. Hilmarsson, L. G. Spitler, E. F. Keane +12
Superluminous supernovae (SLSNe) and long gamma ray bursts (LGRBs) have been proposed as progenitors of repeating Fast Radio Bursts (FRBs). In this scenario, bursts originate from…
Spectro-temporal analysis of a sample of bursts from FRB 121102
Kaustubh Rajwade, Mitchell Mickaliger, Benjamin Stappers +4
FRB~121102 was the first Fast Radio Burst (FRB) that was shown to repeat. Since its discovery in 2012, more than two hundred bursts have been detected from the source. These bursts…
The SUrvey for Pulsars and Extragalactic Radio Bursts V: Recent Discoveries and Full Timing Solutions
R. Spiewak, C. Flynn, S. Johnston +10
The SUrvey for Pulsars and Extragalactic Radio Bursts ran from 2014 April to 2019 August, covering a large fraction of the southern hemisphere at mid- to high-galactic latitudes, a…
Possible periodic activity in the repeating FRB 121102
K. M. Rajwade, M. B. Mickaliger, B. W. Stappers +8
The discovery that at least some Fast Radio Bursts (FRBs) repeat has ruled out cataclysmic events as the progenitors of these particular bursts. FRB~121102 is the most well-studied…
A LOFAR radio search for single and periodic pulses from M31
Joeri van Leeuwen, Klim Mikhailov, Evan Keane +5
Bright, short radio bursts are emitted by sources at a large range of distances: from the nearby Crab pulsar to remote Fast Radio Bursts (FRBs). FRBs are likely to originate from d…
The SUrvey for Pulsars and Extragalactic Radio Bursts IV: Discovery and polarimetry of a 12.1-second radio pulsar
V. Morello, E. F. Keane, T. Enoto +19
We report the discovery of PSR~J22513711, a radio pulsar with a spin period of 12.1 seconds, the second longest currently known. Its timing parameters imply a characteristic age…
Probing the extragalactic fast transient sky at minute timescales with DECam
Igor Andreoni, Jeffrey Cooke, Sara Webb +22
Searches for optical transients are usually performed with a cadence of days to weeks, optimised for supernova discovery. The optical fast transient sky is still largely unexplored…
Relativistic spin precession in the binary PSR J11416545
V. Venkatraman Krishnan, M. Bailes, W. van Straten +5
PSR J11416545 is a precessing binary pulsar that has the rare potential to reveal the two-dimensional structure of a non-recycled pulsar emission cone. It has undergone $\sim 25…