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Large pulsar glitches seem to be common to all radio pulsars and to exhibit a universal behaviour connecting the rate of occurrence, event size and interglitch relaxation that can be explained if the glitches are due to angular momentum…

天体物理学 · 物理学 2007-05-23 M. Ali Alpar

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

Detection of continuous gravitational waves from rapidly-spinning neutron stars opens up the possibility of examining their internal physics. We develop a framework that leverages a future continuous gravitational wave detection to infer a…

广义相对论与量子宇宙学 · 物理学 2023-02-15 Neil Lu , Karl Wette , Susan M. Scott , Andrew Melatos

Pulsars show a steady decrease in their rotational frequency, occasionally interrupted by sudden spin-ups called glitches, whose physical origin is still a mystery. One suggested explanation for at least the small glitches are starquakes,…

高能天体物理现象 · 物理学 2021-10-13 J. A. Rencoret , C. Aguilera-Gómez , A. Reisenegger

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

Radio observations of neutron star binary pulsar systems have constrained strongly the masses of eight neutron stars. Assuming neutron star masses are uniformly distributed between lower and upper bounds $m_l$ and $m_u$, the observations…

天体物理学 · 物理学 2009-01-23 L. S. Finn

Although pulsars are one of the most stable clocks in the universe, many of them are observed to 'glitch', i.e. to suddenly increase their spin frequency (\nu) with fractional increases that range from \Delta\nu/\nu \approx 10^{-11} to…

太阳与恒星天体物理 · 物理学 2015-05-28 Brynmor Haskell , Pierre Pizzochero , Trevor Sidery

Glitches in neutron stars originate from the sudden transfer of angular momentum between superfluid components and the observable crust. By modeling this glitch dynamics, including vortex motion, mutual friction, and angular momentum…

高能天体物理现象 · 物理学 2025-10-24 Zhonghao Tu , Ang Li

Pulsar glitches are sudden increase in their spin frequency, in most cases followed by the long timescale recovery process. As of this writing, about 546 glitches have been reported in 188 pulsars, the Crab pulsar is a special one with…

高能天体物理现象 · 物理学 2019-08-09 Weihua Wang , Xiaoping Zheng

Pulsars are rotating neutron stars, sweeping the emission regions from the magnetic poles across our line of sight. Isolated neutron stars lose angular momentum through dipole radiation and (possibly) particle winds, hence they slow down…

天体物理学 · 物理学 2009-11-07 R. G. Dodson , P. M. McCulloch , D. R. Lewis

The delay time distribution of neutron star mergers provides critical insights into binary evolution processes and the merger rate evolution of compact object binaries. However, current observational constraints on this delay time…

高能天体物理现象 · 物理学 2022-11-28 Michael Zevin , Anya E. Nugent , Susmita Adhikari , Wen-fai Fong , Daniel E. Holz , Luke Zoltan Kelley

Glitches are sudden changes in rotation frequency and spin-down rate, observed from pulsars of all ages. Standard glitches are characterized by a positive step in angular velocity ($\Delta\Omega$ $ > $ $0$) and a negative step in the…

高能天体物理现象 · 物理学 2015-06-23 O. Akbal , E. Gügercinoğlu , S. Şaşmaz Muş , M. A. Alpar

We connect nuclear forces to one of the most notable irregular behaviors observed in pulsars, already detected in approximately 6\% known pulsars, with increasingly accurate data expected from upcoming high-precision timing instruments on…

核理论 · 物理学 2025-06-03 Zhong-Hao Tu , Ang Li

Glitches -- sudden increases in spin rate -- are observed in many pulsars. One mechanism advanced to explain glitches in the youngest pulsars is that they are caused by a starquake, a sudden rearrangement of the crust of the neutron star.…

太阳与恒星天体物理 · 物理学 2015-06-22 L. Keer , D. I. Jones

Glitches, spin-up events in neutron stars, are of prime interest as they reveal properties of nuclear matter at subnuclear densities. We numerically investigate the glitch mechanism due to vortex unpinning using analogies between neutron…

Pulsar glitches are unresolved increments of the rotation rate that sometimes trigger an enhancement of the spin-down rate. On occasions, the augmented spin-down decays gradually in an exponential manner, particularly after the largest…

高能天体物理现象 · 物理学 2026-02-04 E. Zubieta , C. M. Espinoza , D. Antonopoulou , W. C. G. Ho , L. Kuiper , F. García , S. del Palacio

Pulsar glitches are sudden spin-ups in pulsar spin frequency ($\nu$). The glitch size, $\Delta\nu/\nu$, is a key parameter in any mechanism puts across towards the understanding of the events.However, the distribution of the glitch sizes…

高能天体物理现象 · 物理学 2020-07-10 I. O. Eya , E. U. Iyida , C. I. Eze

The phenomenon of pulsar nulling, observed as the temporary inactivity of a pulsar, remains poorly understood both observationally and theoretically. Most observational studies that quantify nulling employ a variant of Ritchings (1976)'s…

高能天体物理现象 · 物理学 2023-09-15 Akash Anumarlapudi , Joseph K. Swiggum , David L. Kaplan , Travis D. J. Fichtenbauer

Giant pulsar frequency glitches as detected in the emblematic Vela pulsar have long been thought to be the manifestation of a neutron superfluid permeating the inner crust of a neutron star. However, this superfluid has been recently found…

高能天体物理现象 · 物理学 2016-07-27 T. Delsate , N. Chamel , N. Gürlebeck , A. F. Fantina , J. M. Pearson , C. Ducoin

One possibility for detecting low-amplitude pulsational variations is through gravitational microlensing. During a microlensing event, the temporary brightness increase leads to improvement in the signal-to-noise ratio, and thereby better…

太阳与恒星天体物理 · 物理学 2021-09-01 Sedighe Sajadian , Richard Ignace , Hilding Neilson