A glitch in the millisecond pulsar J0900−3144

ABSTRACT We report the detection of a glitch in the millisecond pulsar (MSP) PSR J0900–3144, which is included in the European, MeerKAT, and Parkes pulsar timing array (PTA) experiments. The data set combines observations from the MeerKAT, Nançay, Lovell, and Murriyang telescopes, spanning a total baseline of approximately 14 yr. The glitch occurred on MJD 59942(17), with a measured fractional spin frequency step of $\Delta \nu _{\rm g} / \nu = 1.15(13) \times 10^{-12}$. This event represents the third glitch detected in an MSP, following those in PSRs B1821–24A and J0613–0200. Although smaller in amplitude than the previous two, the glitch in PSR J0900–3144 is of a comparable order of magnitude. The updated MSP glitch rate is $2.5(1)\times 10^{-3}$ glitches per pulsar per year, which suggests it is likely that current PTAs will detect another MSP glitch within 5 yr. Using simulations, we demonstrate that such small glitches can go undetected, especially in short data sets such as those from new PTAs, and can bias the inferred achromatic noise model parameters, potentially leading to the down-weighting of the pulsar in gravitational wave background searches.

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Publication Details

Journal
Monthly Notices of the Royal Astronomical Society
Published
2025-11-15
DOI
https://doi.org/10.1093/mnras/staf2034
Primary Topic
Pulsars and Gravitational Waves Research
Type
article
Field-Weighted Citation Impact
0.00

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article

A glitch in the millisecond pulsar J0900−3144

Ismaël Cognard, R. M. Shannon, Daniel J. Reardon, G. Shaifullah et al.
Monthly Notices of the Royal Astronomical Society
Pulsars and Gravitational Waves Research
article

A glitch in the millisecond pulsar J0900−3144

Ismaël Cognard, R. M. Shannon, Daniel J. Reardon, G. Shaifullah, B. W. Stappers, Benjamin Shaw, M. J. Keith, G. Theureau, Andrew Zic, M. E. Lower, Matthew T. Miles, Lucas Guillemot, Shuangqiang Wang, Bhavnesh Bhat
article en

Abstract

ABSTRACT We report the detection of a glitch in the millisecond pulsar (MSP) PSR J0900–3144, which is included in the European, MeerKAT, and Parkes pulsar timing array (PTA) experiments. The data set combines observations from the MeerKAT, Nançay, Lovell, and Murriyang telescopes, spanning a total baseline of approximately 14 yr. The glitch occurred on MJD 59942(17), with a measured fractional spin frequency step of $\Delta \nu _{\rm g} / \nu = 1.15(13) \times 10^{-12}$. This event represents the third glitch detected in an MSP, following those in PSRs B1821–24A and J0613–0200. Although smaller in amplitude than the previous two, the glitch in PSR J0900–3144 is of a comparable order of magnitude. The updated MSP glitch rate is $2.5(1)\times 10^{-3}$ glitches per pulsar per year, which suggests it is likely that current PTAs will detect another MSP glitch within 5 yr. Using simulations, we demonstrate that such small glitches can go undetected, especially in short data sets such as those from new PTAs, and can bias the inferred achromatic noise model parameters, potentially leading to the down-weighting of the pulsar in gravitational wave background searches.

Monthly Notices of the Royal Astronomical SocietyVol. 545(1)
Université d'Orléans (FR), Commonwealth Scientific and Industrial Research Organisation (AU), Centre National de la Recherche Scientifique (FR), Chinese Academy of Sciences (CN), Vanderbilt University (US), Université Paris Sciences et Lettres (FR), Observatoire de Paris (FR), Xinjiang Astronomical Observatory (CN), University of Manchester (GB), ARC Centre of Excellence for Gravitational Wave Discovery (AU), Istituto Nazionale di Fisica Nucleare, Sezione di Milano Bicocca (IT), Astronomy and Space (AU), Osservatorio Astronomico di Cagliari (IT), Laboratoire de Physique et Chimie de l’Environnement et de l’Espace (FR), Swinburne University of Technology (AU), University of Milano-Bicocca (IT)
UK Research and Innovation, Australian Government, Commonwealth Scientific and Industrial Research Organisation, National Research Foundation, Centre National de la Recherche Scientifique, Observatoire de Paris, Université de Recherche Paris Sciences et Lettres, Science and Technology Facilities Council, Institut national des sciences de l'Univers
Openalex Percentile: Top 76%
Pulsars and Gravitational Waves Research
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