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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…

High Energy Astrophysical Phenomena · Physics 2026-02-04 E. Zubieta , C. M. Espinoza , D. Antonopoulou , W. C. G. Ho , L. Kuiper , F. García , S. del Palacio

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

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

We have timed four millisecond pulses, PSRs J1721-2457, J1745-0952, J1810-2005, and J1918-0642, for up to a total of 10.5 years each using multiple telescopes in the European Pulsar Timing Array network: the Westerbork Synthesis Radio…

High Energy Astrophysical Phenomena · Physics 2015-05-18 G. H. Janssen , B. W. Stappers , C. G. Bassa , I. Cognard , M. Kramer , G. Theureau

We present radio observation of a millisecond pulsar PSR J0621+1002 using the Five-hundred-meter Aperture Spherical radio Telescope (FAST). The pulsar shows periodic pulse intensity modulations for both the first and the third pulse…

High Energy Astrophysical Phenomena · Physics 2021-06-02 S. Q. Wang , J. B. Wang , N. Wang , Y. Feng , S. B. Zhang , K. J. Lee , D. Li , J. G. Lu , J. T. Xie , D. J. Zhou , L. Zhang

High magnetic field (high-B) pulsars are key sources to bridge magnetars and conventional rotation powered pulsars, and thus to understand the origin of magnetar activities. We have estimated a tight upper-limit on the X-ray flux of one of…

High Energy Astrophysical Phenomena · Physics 2020-11-19 Aya Bamba , Eri Watanabe , Koji Mori , Shinpei Shibata , Yukikatsu Terada , Hidetoshi Sano , Miroslav D. Filipovic

I show that the braking index, $N$, a fundamental pulsar experimental quantity, naturally differs from the canonical value of 3 by terms which involve mass accretion. Using the measured values of $N$ for PSR1509-58 and PSR0531+21, I…

Astrophysics · Physics 2007-05-23 P. D. Morley

PSR J0205+6449 is a young pulsar in the Crab-like pulsar wind nebula 3C 58 which is thought to be a result of the historical supernova SN1181 CE. The 65.7-ms pulsar is the second most energetic of the known Galactic pulsars and has been…

We are undertaking an extensive X-ray monitoring campaign of the two Crab-like pulsars in the Large Magellanic Clouds, PSR B0540-69 and PSR J0537-6910. We present our current phase-connected timing analysis derived from a set of 50 pointed…

Astrophysics · Physics 2007-05-23 E. V. Gotthelf , W. Zhang , F. E. Marshall , J. Middleditch , Q. D. Wang

Single-pulse studies are important to understand the pulsar emission mechanism and the noise floor in precision timing. We study total intensity and polarimetry properties of three bright millisecond pulsars - PSRs J1022+1001, J1713+0747,…

High Energy Astrophysical Phenomena · Physics 2023-01-18 N. T. Palliyaguru , B. B. P. Perera , M. A. McLaughlin , S. Oslowski , G. L. Siebert

The stable rotation of young pulsars is often interrupted by two non-deterministic phenomena: glitches and red timing noise. Timing noise provides insights into plasma and nuclear physics under extreme conditions. The framework leverages…

High Energy Astrophysical Phenomena · Physics 2025-03-04 Yirong Wen , Jingbo Wang , Wenming Yan , Jianping Yuan , Na Wang , Yong Xia , Jing Zou

We present observations of PSRs J0437-4715, J0738-4042, J0835-4510, J0908-4913, J1048-5832, J1622-4950, J1644-4559, J1721-3532 and J1740-3015 at 17 GHz using the Parkes radio telescope. All 9 were detected at 17 GHz, additionally, we…

Solar and Stellar Astrophysics · Physics 2015-05-28 M. J. Keith , S. Johnston , L. Levin , M. Bailes

PSR J0205+6449 is a young rotation-powered pulsar in SNR 3C 58. It is one of only three young (<10,000 year old) pulsars which are so far detected in the radio and the classical X-ray bands, as well as at hard X-rays above 20 keV and at…

High Energy Astrophysical Phenomena · Physics 2015-05-18 L. Kuiper , W. Hermsen , J. O. Urama , P. R. den Hartog , A. G. Lyne , B. W. Stappers

The Parkes multibeam pulsar survey has led to the discovery of more than 700 pulsars. In this paper, we provide timing solutions, flux densities and pulse profiles for 180 of these new discoveries. Two pulsars, PSRs J1736-2843 and…

We demonstrate that the high-magnetic field pulsar J1119-6127 exhibits three different types of behaviour in the radio band. Trailing the "normal" profile peak there is an "intermittent" peak and these components are flanked by two…

Solar and Stellar Astrophysics · Physics 2015-05-20 Patrick Weltevrede , Simon Johnston , Cristobal M. Espinoza

We report on our discovery of the radio pulsar, PSR J2016$+$3711, in supernova remnant (SNR) CTB 87, with a $\sim10.8\sigma$ significance of pulses, which confirms the compact nature of the X-ray point source in CTB 87. It is the first…

High Energy Astrophysical Phenomena · Physics 2024-02-02 Qian-Cheng Liu , Wen-Juan Zhong , Yang Chen , Pei Wang , Ping Zhou , You-Ling Yue , Di Li

We report the detection of 376.05 Hz (2.66 ms) coherent X-ray pulsations in NICER observations of a transient outburst of the low-mass X-ray binary IGR J17494-3030 in 2020 October/November. The system is an accreting millisecond X-ray…

We report on the phase-coherent timing analysis of the accreting millisecond X-ray pulsar IGR J17591-2342, using Neutron Star Interior Composition Explorer (NICER) data taken during the outburst of the source between 2018 August 15 and 2018…

High Energy Astrophysical Phenomena · Physics 2020-05-13 A. Sanna , L. Burderi , K. C. Gendreau , T. Di Salvo , P. S. Ray , A. Riggio , A. F. Gambino , R. Iaria , L. Piga , C. Malacaria , G. K. Jaisawal

We report a detailed study of subpulse drifting in four long period pulsars. These pulsars were observed in the Meterwavelength Single-pulse Polarimetric Emission Survey and the presence of phase modulated subpulse drifting was reported in…

High Energy Astrophysical Phenomena · Physics 2018-03-14 Rahul Basu , Dipanjan Mitra

We report on the timing and spectral properties of PSR J1838-0655 using joint observations from the Neutron Star Interior Composition Explorer (NICER) and the Nuclear Spectroscopic Telescope Array (NuSTAR). By disentangling the pulsar's…

High Energy Astrophysical Phenomena · Physics 2025-08-27 Xian-Ao Wang , Han-Long Peng , Jin-Tao Zheng , Shi-Qi Zhou , Wen-Tao Ye , Ming-Yu Ge , Xiang-Hua Li , Shi-Jie Zheng
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