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相关论文: Autocorrelations in pulsar glitch waiting times an…

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Few statistically compelling correlations are found in pulsar timing data between the size of a rotational glitch and the time to the preceding glitch (backward waiting time) or the succeeding glitch (forward waiting time), except for a…

高能天体物理现象 · 物理学 2018-09-11 A. Melatos , G. Howitt , W. Fulgenzi

A microphysics-agnostic meta-model of rotational glitches in rotation-powered pulsars is developed, wherein the globally averaged internal stress accumulates as a Brownian process between glitches, and a glitch is triggered once a critical…

高能天体物理现象 · 物理学 2020-04-15 Julian B. Carlin , Andrew Melatos

Glitches are rare spin-up events that punctuate the smooth slow-down of the rotation of pulsars. For the Vela pulsar and PSR J0537-6910, the glitch sizes and the times between consecutive events have clear preferred scales, contrary to the…

高能天体物理现象 · 物理学 2019-10-02 J. R. Fuentes , C. M. Espinoza , A. Reisenegger

Rotational glitches in some rotation-powered pulsars display power-law size and exponential waiting time distributions. These statistics are consistent with a state-dependent Poisson process, where the glitch rate is an increasing function…

高能天体物理现象 · 物理学 2020-01-08 A. Melatos , L. V. Drummond

The young, fast-spinning, X-ray pulsar J0537-6910 displays an extreme glitch activity, with large spin-ups interrupting its decelerating rotation every ~100 days. We present nearly 13 years of timing data from this pulsar, obtained with the…

高能天体物理现象 · 物理学 2017-11-08 D. Antonopoulou , C. M. Espinoza , L. Kuiper , N. Andersson

The close correlation observed between emission state and spin-down rate change of pulsars has many implications both for the magnetospheric physics and the neutron star interior. The middle-aged pulsar PSR J0738$-$4042, which had been…

高能天体物理现象 · 物理学 2022-11-23 S. Q. Zhou , E. Gügercinoğlu , J. P. Yuan , M. Y. Ge , C. Yu , C. M. Zhang , J. Zhang , Z. W. Feng , C. Q. Ye

Glitch size and waiting time probability density functions (PDFs) are estimated for the five pulsars that have glitched most using the nonparametric kernel density estimator. Two objects exhibit decreasing size and waiting time PDFs. Their…

高能天体物理现象 · 物理学 2018-11-07 G. Howitt , A. Melatos , A. Delaigle

Through a detailed timing analysis of $\textit{Fermi}$-LAT data, the rotational behavior of the $\gamma$-ray pulsar PSR J1522$-$5735 was tracked from August 2008 (MJD 54692) to January 2024 (MJD 60320). During this 15.4-year period, two…

高能天体物理现象 · 物理学 2024-12-12 S. Q. Zhou , W. T. Ye , M. Y. Ge , E. GügercinoğLu , S. J. Zheng , C. Yu , J. P. Yuan , J. Zhang

For a selection of 35 pulsars with large spin-up glitches ($\Delta{\nu}/\nu\geq10^{-6}$), which are monitored by the Jodrell Bank Observatory, we analyse 157 glitches and their recoveries. All parameters are measured consistently and we…

An updated analysis of pulsar glitch parameters was conducted using a sample of 215 pulsars, encompassing 677 recorded glitch events, each glitch at least once between 1968 and 2024. The glitch rates were estimated and plotted against…

高能天体物理现象 · 物理学 2024-11-20 Miracle Chibuzor Marcel

PSR J0537$-$6910 is the most active glitching pulsar with a glitch rate $\sim0.3$ yr $^{-1}$. We have reanalysed 45 glitches of PSR J0537$-$6910 published in the literature and have done post-glitch timing fits within the vortex creep…

高能天体物理现象 · 物理学 2021-06-08 Onur Akbal , Erbil Gügercinoğlu , M. Ali Alpar

Glitching pulsars fall broadly into two statistical classes: those with Poisson-like waiting times and power-law sizes, and those with unimodal waiting times and sizes. Previous glitch modeling based on a state-dependent Poisson process…

高能天体物理现象 · 物理学 2019-01-08 Julian B. Carlin , Andrew Melatos

Pulsar glitch is a phenomenon characterized by abrupt changes in the spin period over less than a minute. We present a comprehensive analysis of glitches in four gamma-ray pulsars by combining the timing observation data from \textit{Fermi}…

高能天体物理现象 · 物理学 2025-01-17 P. Liu , J. -P. Yuan , M. -Y. Ge , W. -T. Ye , S. -Q. Zhou , S. -J. Dang , Z. -R. Zhou , E. Gügercinoğlu , Z. H. Tu , P. Wang , A. Li , D. Li , N. Wang

We present timing solutions from the Fermi-LAT observations of gamma-ray pulsars PSR J0835$-$4510 (Vela), PSR J1023$-$5746, PSR J2111$+$4606, and PSR J2229$+$6114. Data ranges for each pulsar extend over a decade. From data analysis we have…

高能天体物理现象 · 物理学 2022-02-02 E. Gügercinoğlu , M. Y. Ge , J. P. Yuan , S. Q. Zhou

We test statistically the hypothesis that radio pulsar glitches result from an avalanche process, in which angular momentum is transferred erratically from the flywheel-like superfluid in the star to the slowly decelerating, solid crust via…

天体物理学 · 物理学 2009-11-13 A. Melatos , C. Peralta , J. S. B. Wyithe

We have analyzed 5.5 years of timing observations of 7 'slowly' rotating radio pulsars, made with the Westerbork Synthesis Radio Telescope. We present improved timing solutions and 30, mostly small, new glitches. Particularly interesting…

天体物理学 · 物理学 2009-11-11 G. H. Janssen , B. W. Stappers

The study of pulsar glitch phenomena serves as a valuable probe into the dynamic properties of matter under extreme high-density conditions, offering insights into the physics within neutron stars. Providing theoretical explanations for the…

高能天体物理现象 · 物理学 2025-01-07 Pei-Xin Zhu , Xiao-Ping Zheng

Timing observations from the Nanshan 26-m radio telescope for nine pulsars between 2000 and 2014 have been used to search for glitches. The data span for nine pulsars ranges from 11.6 to 14.2 years. From the total of 114 yr of pulsar…

高能物理 - 唯象学 · 物理学 2022-08-17 Zu-Rong Zhou , Jing-Bo Wang , Na Wang , Jian-Ping Yuan , Fei-Fei Kou , Shi-Jun Dang

Timing observations from the Parkes 64-m radio telescope for 165 pulsars between 1990 and 2011 have been searched for period glitches. A total of 107 glitches were identified in 36 pulsars, where 61 have previously been reported and 46 are…

高能天体物理现象 · 物理学 2012-11-12 M. Yu , R. N. Manchester , G. Hobbs , S. Johnston , V. M. Kaspi , M. Keith , A. G. Lyne , G. J. Qiao , V. Ravi , J. M. Sarkissian , R. Shannon , R. X. Xu

We report on more than 7 years of monitoring of PSR J0537-6910, the 16 ms pulsar in the Large Magellanic Cloud, using data acquired with the RXTE. During this campaign the pulsar experienced 23 sudden increases in frequency (``glitches'')…

天体物理学 · 物理学 2008-11-26 John Middleditch , Francis E. Marshall , Q. Daniel Wang , Eric V. Gotthelf , William Zhang
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