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Glitches are important to understand the internal structure of neutron stars. They are studied using timing observations. The best studied neutron star in this respect is the Crab Pulsar. The first glitch recorded in this pulsar occurred in…

高能天体物理现象 · 物理学 2017-10-31 M. Vivekanand

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…

Data are gathered from the Parkes pulsar data archive of twelve young radio pulsars, with the intervals of data for each pulsar ranged between 2.8 years and 6.8 years. 31 glitches are identified by using phase connection from "pulsar…

高能天体物理现象 · 物理学 2018-06-15 S. Q. Zhou , J. P. Yuan , J. Zhang , M. Q. Liu , Z. W. Feng. S. J. Dang , X. D. Zhu

We present the results from timing observations with the GMRT of the young pulsar J1833-1034, in the galactic supernova remnant G21.5-0.9. We detect the presence of 4 glitches in this pulsar over a period of 5.5 years, making it one of a…

太阳与恒星天体物理 · 物理学 2015-06-05 Jayanta Roy , Yashwant Gupta , Wojciech Lewandowski

Seven years of pulse time-of-arrival measurements have been collected from observations of the young pulsar PSR B2334+61 using the Nanshan radio telescope of Urumqi Observatory. A phase-connected solution has been obtained over the whole…

高能天体物理现象 · 物理学 2015-05-19 J. P. Yuan , R. N. Manchester , N. Wang , Xia Zhou , Z. Y. Liu , Z. F. Gao

We report on the observation of a very small glitch observed for the first time in a millisecond pulsar, PSR B1821-24 located in the globular cluster M28. Timing observations were mainly conducted with the Nancay radiotelescope (France) and…

天体物理学 · 物理学 2009-11-10 Ismael Cognard , Donald C. Backer

We report a large spin-up glitch in PSR J1846-0258 which coincided with the onset of magnetar-like behavior on 2006 May 31. We show that the pulsar experienced an unusually large glitch recovery, with a recovery fraction of Q=8.7+/- 2.5,…

高能天体物理现象 · 物理学 2010-02-05 Margaret A. Livingstone , Victoria M. Kaspi , Fotis. P. Gavriil

From 2000 to 2010, monitoring of radio emission from the Crab pulsar at Xinjiang Observatory detected a total of nine glitches. The occurrence of glitches appears to be a random process as described by previous researches. A persistent…

高能天体物理现象 · 物理学 2012-03-21 Jingbo Wang , Na Wang , Hao Tong , Jianping Yuan

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

We present updated measurements of the Crab pulsar glitch of 2019 July 23 using a dataset of pulse arrival times spanning $\sim$5 months. On MJD 58687, the pulsar underwent its seventh largest glitch observed to date, characterised by an…

高能天体物理现象 · 物理学 2021-04-21 B. Shaw , M. J. Keith , A. G. Lyne , M. B. Mickaliger , B. W. Stappers , J. D. Turner , P. Weltevrede

In the standard scenario for spin evolution of isolated neutron stars, a young pulsar slows down with a surface magnetic field B that does not change. Thus the pulsar follows a constant B trajectory in the phase space of spin period and…

太阳与恒星天体物理 · 物理学 2015-07-09 Wynn C. G. Ho

During the spin-up phase of a large pulsar glitch - a sudden decrease of the rotational period of a neutron star - the angular velocity of the star may overshoot, namely reach values greater than that observed for the new post-glitch…

高能天体物理现象 · 物理学 2020-04-29 Pierre Pizzochero , Alessandro Montoli , Marco Antonelli

A short X-ray burst was observed from the radio-loud magnetar 1E 1547.0-5408 in 2022 April. Unusually however, the source stopped showing radio pulsations $\gtrsim 3\,$weeks prior to the burst. After recovery, radio timing revealed that the…

高能天体物理现象 · 物理学 2023-06-14 Arthur G. Suvorov

The 2016 Vela glitch observed by the Mt Pleasant radio telescope provides the first opportunity to study pulse-to-pulse dynamics of a pulsar glitch, opening up new possibilities to study the neutron star's interior. We fit models of the…

高能天体物理现象 · 物理学 2019-07-03 Gregory Ashton , Paul D. Lasky , Vanessa Graber , Jim Palfreyman

We report the pulse timing analysis of \emph{Rossi X-ray Timing Explorer} (\emph{RXTE}) observations of the anomalous X-ray pulsar 1E 2259+586 from its 2002 outburst to October, 2010. Our objectives are to extend the work on the recovery…

高能天体物理现象 · 物理学 2011-10-07 Burcin Icdem , Altan Baykal , S. Cagdas Inam

Pulsars are highly magnetized rotating neutron stars with a very stable rotation speed. Irrespective of their stable rotation rate, many pulsars have been observed with the sudden jump in the rotation rate, which is known as pulsar glitch.…

高能天体物理现象 · 物理学 2018-10-24 Avishek Basu , Prasanta Char , Rana Nandi , Bhal Chandra Joshi , Debades Bandyopadhyay

Several glitches have been observed in young, isolated radio pulsars, while a clear detection in accretion-powered X-ray pulsars is still lacking. We use the Pizzochero snowplow model for pulsar glitches as well as starquake models to…

高能天体物理现象 · 物理学 2015-06-11 L. Ducci , P. M. Pizzochero , V. Doroshenko , A. Santangelo , S. Mereghetti , C. Ferrigno

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…

高能天体物理现象 · 物理学 2015-06-18 C. M. Espinoza , D. Antonopoulou , B. W. Stappers , A. Watts , A. G. Lyne

Recent observation of a sudden spin down, occurring on a timescale not exceeding two weeks, of the magnetar 1E2259+586 (see Archibald et al. 2013, where this event was dubbed an `anti-glitch') has not still received any interpretation in…

太阳与恒星天体物理 · 物理学 2014-12-04 Elena Kantor , Mikhail Gusakov

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