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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 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…

Pulsar glitches, sudden jumps in frequency in otherwise steadily spinning down radio pulsars, offer a unique glimpse into the superfluid interior of neutron stars. The exact trigger of these events remains, however, elusive and this has…

High Energy Astrophysical Phenomena · Physics 2018-02-16 Pierre Pizzochero , Marco Antonelli , Brynmor Haskell , Stefano Seveso

Neutron star glitches are observed via artificially scheduled pulsar pulse arrival-time observations. Detection probability density of glitch events for a given data set is essentially required knowledge for realizing glitch detectability…

High Energy Astrophysical Phenomena · Physics 2018-03-28 Meng Yu

Pulsars are rotating neutron stars that are renowned for their timing precision, although glitches can interrupt the regular timing behavior when these stars are young. Glitches are thought to be caused by interactions between normal and…

High Energy Astrophysical Phenomena · Physics 2017-03-29 Wynn C. G. Ho , Cristobal M. Espinoza , Danai Antonopoulou , Nils Andersson

Pulsar glitches are sudden increases in the spin frequency of an otherwise steadily spinning down neutron star. These events are thought to represent a direct probe of the dynamics of the superfluid interior of the star. However glitches…

Solar and Stellar Astrophysics · Physics 2015-06-16 Brynmor Haskell , Danai Antonopoulou

Pulsar glitches are a potential source of gravitational waves for current and future interferometric gravitational wave detectors. Some pulsar glitch events were observed by radio and X-ray telescopes during the fifth LIGO science run. It…

General Relativity and Quantum Cosmology · Physics 2008-11-26 Kazuhiro Hayama , Shantanu Desai , Soumya D. Mohanty , Malik Rakhmanov , Tiffany Summerscales , Sanichiro Yoshida

Glitches are sudden spin-up events that punctuate the steady spin down of pulsars and are thought to be due to the presence of a superfluid component within neutron stars. The precise glitch mechanism and its trigger, however, remain…

High Energy Astrophysical Phenomena · Physics 2015-06-18 C. M. Espinoza , D. Antonopoulou , B. W. Stappers , A. Watts , A. G. Lyne

The abrupt change in the pulse period of a pulsar is called a pulsar glitch. In this paper, we present eleven pulsar glitches detected using the Ooty Radio Telescope (ORT) and the upgraded Giant Metrewave Radio Telescope (uGMRT) in high…

Radio pulsars provide us with some of the most stable clocks in the universe. Nevertheless several pulsars exhibit sudden spin-up events, known as glitches. More than forty years after their first discovery, the exact origin of these…

Solar and Stellar Astrophysics · Physics 2015-02-26 Brynmor Haskell , Andrew Melatos

Pulsar glitches are rapid spin-up events that occur in the rotation of neutron stars, providing a valuable probe into the physics of the interiors of these objects. Long-term monitoring of a large number of pulsars facilitates the detection…

Pulsar glitches are thought to be probes of the superfluid interior of neutron stars. These sudden jumps in frequency observed in many pulsars are generally assumed to be the macroscopic manifestation of superfluid vortex motion on a…

High Energy Astrophysical Phenomena · Physics 2018-08-22 Brynmor Haskell

Neutron stars are observed to undergo small, abrupt rotational speed-up. This phenomenon is known as glitch. In pulsar timing observations, detection of a neutron star glitch is constrained by the time of occurrence of the event relative to…

High Energy Astrophysical Phenomena · Physics 2017-04-21 Meng Yu , Qinjian Liu

We study the pulsar timing properties and the data analysis methods during glitch recoveries. In some cases one first fits the time-of-arrivals (TOAs) to obtain the "time-averaged" frequency $\nu$ and its first derivative $\dot\nu$, and…

High Energy Astrophysical Phenomena · Physics 2013-12-12 Yi Xie , Shuang-Nan Zhang

Pulsars are rotating neutron stars that emit periodic electromagnetic radiation. While pulsars generally slow down as they lose energy, some also experience glitches: spontaneous increases of their rotational frequency. According to several…

High Energy Astrophysical Phenomena · Physics 2023-07-18 Joan Moragues , Luana M. Modafferi , Rodrigo Tenorio , David Keitel

The UTMOST-NS pulsar timing programme operated at the Molonglo Observatory Synthesis Telescope from April 2021 to June 2023, observing 173 pulsars with an average cadence of 50 pulsars per day. An overview of the programme is presented,…

High Energy Astrophysical Phenomena · Physics 2025-07-01 L. Dunn , C. Flynn , M. Bailes , Y. S. C. Lee , G. Howitt , A. Melatos , V. Gupta , A. Mandlik , A. Deller

Pulsars are known for their superb timing precision, although glitches can interrupt the regular timing behavior when the stars are young. These glitches are thought to be caused by interactions between normal and superfluid matter in the…

Solar and Stellar Astrophysics · Physics 2015-10-05 Wynn C. G. Ho , Cristobal M. Espinoza , Danai Antonopoulou , Nils Andersson

A common way to calculate the glitch activity of a pulsar is an ordinary linear regression of the observed cumulative glitch history. This method however is likely to underestimate the errors on the activity, as it implicitly assumes a…

High Energy Astrophysical Phenomena · Physics 2021-03-22 Alessandro Montoli , Marco Antonelli , Brynmor Haskell , Pierre Pizzochero

Glitches are sudden jumps in the spin frequency of pulsars believed to originate in the superfluid interior of neutron stars. Superfluid flow in a model neutron star is simulated by solving the equations of motion of a two-component…

High Energy Astrophysical Phenomena · Physics 2016-05-25 G. Howitt , B. Haskell , A. Melatos

$\sim 6\%$ 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
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