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Glitches detected in pulsar timing observations at the Nanshan radio telescope of Urumqi Observatory between 2002 July and 2008 December are presented. In total, 29 glitches were detected in 19 young pulsars, with this being the first…

Astrophysics of Galaxies · Physics 2015-05-14 J. P. Yuan , N. Wang , R. N. Manchester , Z. Y. Liu

We conducted a timing analysis of PSR J0922+0638 (B0919+06) using data from the Nanshan 26 m radio telescope and the MeerKAT telescope, spanning from January 2001 to March 2023. During this 22-year period, we discovered a previously…

High Energy Astrophysical Phenomena · Physics 2025-07-31 Peng Liu , Mingyang Wang , Jianping Yuan , Zhonghao Tu , Ang Li , Xia Zhou , Na Wang

We have observed a large glitch in the Crab pulsar (PSR B0531+21). The glitch occurred around MJD 58064 (2017 November 8) when the pulsar underwent an increase in the rotation rate of $\Delta \nu = 1.530 \times 10^{-5}$ Hz, corresponding to…

High Energy Astrophysical Phenomena · Physics 2018-05-23 B. Shaw , A. G. Lyne , B. W. Stappers , P. Weltevrede , C. G. Bassa , A. Y. Lien , M. B. Mickaliger , R. P. Breton , C. A. Jordan , M. J. Keith , H. A. Krimm

We report the detection of a large glitch in the pulsar B0919+06 (J0922+0638). The glitch occurred in 2009 November 5 (MJD 55140) and was characterized by a fractional increase in the rotation frequency of Deltanu/nu=1.3x10^{-6}. A large…

Solar and Stellar Astrophysics · Physics 2015-05-19 Tatiana V. Shabanova

We presented timing results of PSR B2035+36 using ~9-yr observations with the Nanshan 25-m radio telescope. PSR B2035+36 was reported to exhibit significant changes in pulse profile correlated with spin-down state variations. We found that…

High Energy Astrophysical Phenomena · Physics 2018-06-13 F. F. Kou , J. P. Yuan , N. Wang , W. M. Yan , S. J. Dang

Six glitches have been recently observed in the rotational frequency of the young pulsar PSR B1737-30 (J1740-3015) using the 25-m Nanshan telescope of Urumqi Observatory. With a total of 20 glitches in 20 years, it is one of the most…

Astrophysics · Physics 2009-11-13 W. Z. Zou , N. Wang , R. N. Manchester , J. O. Urama , G. Hobbs , Z. Y. Liu , J. P. Yuan

Timing observations from the Nanshan 26-m radio telescope for nine pulsars between 2000 and 2014 have been used to search for glitches. The data span for nine pulsars ranges from 11.6 to 14.2 years. From the total of 114 yr of pulsar…

High Energy Physics - Phenomenology · Physics 2022-08-17 Zu-Rong Zhou , Jing-Bo Wang , Na Wang , Jian-Ping Yuan , Fei-Fei Kou , Shi-Jun Dang

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…

One large glitch was detected in PSR B1737$-$30 using data spanning from MJD 57999 to 58406 obtained with the newly built Shanghai Tian Ma Radio Telescope (TMRT). The glitch took place at the time around MJD 58232.4 when the pulsar…

High Energy Astrophysical Phenomena · Physics 2019-05-15 Jie Liu , Zhen Yan , Jian-Ping Yuan , Ru-Shuang Zhao , Zhi-Peng Huang , Xin-Ji Wu , Na Wang , Zhi-Qiang Shen

Radio timing observations of the high-magnetic-field pulsar PSR J1718-3718 have shown that it suffered a large glitch with Dnu_g/nu = (33.25 +/- 0.01) x 10^{-6} between 2007 September (MJD 54336) and 2009 January (MJD 54855). This is the…

High Energy Astrophysical Phenomena · Physics 2015-05-28 Richard N Manchester G Hobbs

We report on more than 7 years of monitoring of PSR J0537-6910, the 16 ms pulsar in the Large Magellanic Cloud, using data acquired with the RXTE. During this campaign the pulsar experienced 23 sudden increases in frequency (``glitches'')…

In this paper we report unusual glitches in two young pulsars, PSR J1825-0935 (B1822-09) and PSR J1835-1106. For PSR J1825-0935, a slow glitch characterised by a temporary decrease in the slowdown rate occurred between 2000 December 31 to…

Astrophysics · Physics 2009-11-10 W. Z. Zou , N. Wang , H. X. Wang , R. N. Manchester , X. J. Wu , J. Zhang

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

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…

High Energy Astrophysical Phenomena · Physics 2012-03-21 Jingbo Wang , Na Wang , Hao Tong , Jianping Yuan

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

Three slow glitches in the rotation rate of the pulsar B1822-09 were revealed over the 1995-2004 interval. The slow glitches observed are characterized by a gradual increase in the rotation frequency with a long timescale of several months,…

Data Analysis, Statistics and Probability · Physics 2009-11-10 T. V. Shabanova

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

Timing observations from the Parkes 64-m radio telescope for 165 pulsars between 1990 and 2011 have been searched for period glitches. A total of 107 glitches were identified in 36 pulsars, where 61 have previously been reported and 46 are…

High Energy Astrophysical Phenomena · Physics 2012-11-12 M. Yu , R. N. Manchester , G. Hobbs , S. Johnston , V. M. Kaspi , M. Keith , A. G. Lyne , G. J. Qiao , V. Ravi , J. M. Sarkissian , R. Shannon , R. X. Xu

PSR J1806-2125 is a pulsar discovered in the Parkes multibeam pulsar survey with a rotational period of 0.4s and a characteristic age of 65kyr. Between MJDs 51462 and 51894 this pulsar underwent an increase in rotational frequency of…

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…

High Energy Astrophysical Phenomena · Physics 2018-06-15 S. Q. Zhou , J. P. Yuan , J. Zhang , M. Q. Liu , Z. W. Feng. S. J. Dang , X. D. Zhu
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