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Related papers: The anti-glitching gamma-ray pulsar PSR J1522-5735

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The study of pulsar glitches provides a unique window into the internal structure and dynamic processes of neutron stars. PSR J0007+7303, a very bright gamma-ray pulsar, is the first pulsar discovered by the Fermi-LAT telescope. In this…

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…

High Energy Astrophysical Phenomena · Physics 2024-12-12 S. Q. Zhou , W. T. Ye , M. Y. Ge , E. GügercinoğLu , S. J. Zheng , C. Yu , J. P. Yuan , J. Zhang

Pulsars are the most numerous class of Galactic gamma-ray sources detected by the Fermi Large Area Telescope (LAT). Young pulsars occasionally experience sudden timing discontinuities called glitches, characterized by rapid changes in…

High Energy Astrophysical Phenomena · Physics 2026-01-08 Giovanni Cozzolongo , Alessio Fiori , Massimiliano Razzano , Pablo M. Saz Parkinson

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…

High Energy Astrophysical Phenomena · Physics 2022-02-02 E. Gügercinoğlu , M. Y. Ge , J. P. Yuan , S. Q. Zhou

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}…

High Energy Astrophysical Phenomena · Physics 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

Using data from the Neutron star Interior Composition ExploreR (NICER) observatory, we identified a permanent spin frequency decrease of $\Delta\nu=-(1.04\pm0.07)\times 10^{-7}\,\mathrm{Hz}$ around MJD 60132 in the rotation-powered pulsar…

High Energy Astrophysical Phenomena · Physics 2024-05-03 Youli Tuo , M. M. Serim , Marco Antonelli , Lorenzo Ducci , Armin Vahdat , Mingyu Ge , Andrea Santangelo , Fei Xie

The pulsar glitches are generally assumed to be an apparent manifestation of the superfluid interior of the neutron stars. Most of them were discovered and extensively studied by continuous monitoring in the radio wavelengths. The Fermi-LAT…

Instrumentation and Methods for Astrophysics · Physics 2022-04-20 E. V. Sokolova , A. G. Panin

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…

High Energy Astrophysical Phenomena · Physics 2017-11-08 D. Antonopoulou , C. M. Espinoza , L. Kuiper , N. Andersson

Pulsars are rapidly spinning and highly magnetized neutron stars, with highly stable rotational period and gradual spin-down over a long timescale due to the loss of radiation. Glitches refer to the events that suddenly increase the…

High Energy Astrophysical Phenomena · Physics 2016-07-06 C. W. Ng , J. Takata , K. S. Cheng

A glitch of a pulsar is known as a sudden increase in the spin frequency and spin-down rate (frequency time derivative), and it can be caused by a sudden rel\ ease of the stress built up in the solid crust of the star or pinned vortices in…

High Energy Astrophysical Phenomena · Physics 2017-06-28 J. Zhao , C. W. Ng , L. C. C. Lin , J. Takata , Y. Cai , C. P. Hu , D. C. C. Yen , P. H. T. Tam , C. Y. Hui , A. K. H. Kong , K. S. Cheng

Context. Pulsars have a very stable rotation. However, sudden increases in their rotation frequency known as glitches, perturb their evolution. While large glitches are commonly detected, small glitches are harder to detect because of the…

High Energy Astrophysical Phenomena · Physics 2024-06-26 E. Zubieta , F. Garcia , S. del Palacio , S. B. Araujo Furlan , G. Gancio , C. O. Lousto , J. A. Combi , C. M. Espinoza

We report the discovery of PSR J1838-0537, a gamma-ray pulsar found through a blind search of data from the Fermi Large Area Telescope (LAT). The pulsar has a spin frequency of 6.9 Hz and a frequency derivative of -2.2e-11 Hz/s, implying a…

The spin-down law of pulsars is generally perturbed by two types of timing irregularities: glitches and timing noise. Glitches are sudden changes in the rotational frequency of pulsars, while timing noise is a discernible stochastic…

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. The most interesting…

Astrophysics · Physics 2007-05-23 G. H. Janssen , B. W. Stappers

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…

Astrophysics · Physics 2009-11-11 G. H. Janssen , B. W. Stappers

The rotation of more than 700 pulsars has been monitored using the 76-m Lovell Telescope at Jodrell Bank. Here we report on a new search for glitches in the observations, revealing 128 new glitches in the rotation of 63 pulsars. Combining…

High Energy Astrophysical Phenomena · Physics 2015-03-18 Cristobal M. Espinoza , Andrew G. Lyne , Ben W. Stappers , Michael Kramer

We report the detection of an anti-glitch with a fractional frequency change of $\Delta\nu/\nu=-3.46(6)\times10^{-9}$ in the rotation-powered pulsar PSR J1835$-$1106 at MJD 55813, based on timing observations collected with the Nanshan 26-m…

High Energy Astrophysical Phenomena · Physics 2025-09-17 Mingyang Wang , Peng Liu , Jianping Yuan , Ang Li , Youli Tuo , Shijun Dang , Weihua Wang , Mingyu Ge , Xia Zhou , Na Wang

$\sim 6\%$ of all known pulsars have been observed to exhibit sudden spin-up events, known as glitches. For more than fifty years, these phenomena have played an important role in helping to understand pulsar (astro)physics. Based on the…

High Energy Astrophysical Phenomena · Physics 2022-11-28 Shiqi Zhou , Erbil Gügercinoğlu , Jianping Yuan , Mingyu Ge , Cong Yu

We have constructed timing solutions for 81 gamma-ray pulsars covering more than five years of Fermi data. The sample includes 37 radio-quiet or radio-faint pulsars which cannot be timed with other telescopes. These timing solutions and the…

High Energy Astrophysical Phenomena · Physics 2015-12-02 Matthew Kerr , Paul Ray , Simon Johnston , Ryan Shannon , Fernando Camilo

Timing observations of 40 mostly young pulsars using the ATNF Parkes radio telescope between 1990 January and 1998 December are reported. In total, 20 previously unreported glitches and ten other glitches were detected in 11 pulsars. These…

Astrophysics · Physics 2009-10-31 N. Wang , R. N. Manchester , R. T. Pace , M. Bailes , V. M. Kaspi , B. W. Stappers , A. G. Lyne
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