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Pulsars are known for their exceptionally stable rotation. However, this stability can be disrupted by glitches, sudden increases in rotation frequency whose cause is poorly understood. In this study, we present some preliminary results…

We have observed the Crab Pulsar in the optical with S-Cam, an instrument based on Superconducting Tunneling Junctions (STJs) with $\mu$s time resolution. Our aim was to study the delay between the radio and optical pulse. The Crab Pulsar…

We study the effect of pulsar rotation on timing of binary pulsars, with particular emphasis on the double pulsar system J0737-3039. Special relativistic aberration due to the orbital motion of pulsar changes both the longitude and…

Astrophysics · Physics 2009-11-10 Roman R. Rafikov , Dong Lai

We present the results of a search for transient radio bursts of between 0.125 and 32 millisecond duration in two archival pulsar surveys of intermediate galactic latitudes with the Parkes multibeam receiver. Fourteen new neutron stars have…

Solar and Stellar Astrophysics · Physics 2015-05-14 S. Burke-Spolaor , M. Bailes

We report the discovery of PSR J1909-3744, a 2.95 millisecond pulsar in a nearly circular 1.53 day orbit. Its narrow pulse width of 43 microseconds allows pulse arrival times to be determined with great accuracy. We have spectroscopically…

Astrophysics · Physics 2009-11-10 B. A. Jacoby , M. Bailes , M. H. van Kerkwijk , S. Ord , A. Hotan , S. R. Kulkarni , S. B. Anderson

We present timing solutions for 12 pulsars discovered in the Green Bank North Celestial Cap (GBNCC) 350 MHz pulsar survey, including six millisecond pulsars (MSPs), a double neutron star (DNS) system, and a pulsar orbiting a massive white…

The Crab Pulsar is known to feature plasma lensing events known as echoes. These events are characterized by additional components in the pulse profile which are produced by additional images formed when the pulsar's radio emission is…

High Energy Astrophysical Phenomena · Physics 2026-05-27 Thierry Serafin Nadeau , Marten H. van Kerkwijk , Jing Luo , Robert Main , Kiyoshi W. Masui , James W. McKee , Ue-Li Pen

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

We report observed and derived timing parameters for three millisecond pulsars (MSPs) from observations collected with the Parkes 64-m telescope, Murriyang. The pulsars were found during re-processing of archival survey data by Mickaliger…

Providing a link between magnetars and radio pulsars, high magnetic field neutron stars are ideal targets to investigate how bursting/magnetospheric activity and braking torque variations are connected to rotational glitches. The last…

High Energy Astrophysical Phenomena · Physics 2015-06-23 D. Antonopoulou , P. Weltevrede , C. M. Espinoza , A. L. Watts , S. Johnston , R. M. Shannon , M. Kerr

We report here on the timing of 597 pulsars over the last four years with the MeerKAT telescope. We provide Times-of-Arrival, pulsar ephemeris files and per-epoch measurements of the flux density, dispersion measure (DM) and rotation…

High Energy Astrophysical Phenomena · Physics 2024-04-03 M. J. Keith , S. Johnston , A. Karastergiou , P. Weltevrede , M. E. Lower , A. Basu , B. Posselt , L. S. Oswald , A. Parthasarathy , A. D. Cameron , M. Serylak , S. Buchner

The Crab nebula is so far the only celestial object with a statistically significant detection in soft x-ray polarimetry, a window that has not been explored in astronomy since the 1970s. However, soft x-ray polarimetry is expected to be a…

We report the detection of an extreme flux decrease accompanied by clear dispersion measure (DM) and rotation measure (RM) variations for pulsar B1929+10 during the 110-minute radio observation with the Five-hundred-meter Aperture Spherical…

High Energy Astrophysical Phenomena · Physics 2024-10-23 Zhengli Wang , Shunshun Cao , Jiguang Lu , Yulan Liu , Xun Shi , Jinchen Jiang , Enwei Liang , Weiyang Wang , Heng Xu , Renxin Xu

We present timing solutions and analyses of 11 pulsars discovered by the Five-hundred-meter Aperture Spherical radio Telescope (FAST). These pulsars were discovered using an ultra-wide bandwidth receiver in drift-scan observations made…

The hard X-ray detector (HXD) on board the X-ray satellite Suzaku is designed to have a good timing capability with a 61 $\mu$s time resolution. In addition to detailed descriptions of the HXD timing system, results of in-orbit timing…

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

(Abridged) This thesis presents long-term timing results on 20 millisecond pulsars (MSPs). It has been predicted that such timing may detect gravitational waves (GWs) - a major (but untested) prediction of general relativity. Our results…

Astrophysics of Galaxies · Physics 2009-06-24 Joris P. W. Verbiest

The Argentine Institute of Radio astronomy (IAR) is equipped with two single-dish 30-m radio antennas capable of performing daily observations of pulsars and radio transients in the southern hemisphere at 1.4 GHz. We aim to contribute to…

Accurate polarimetric calibration of the radio pulse profiles from pulsars is crucial for studying their radiation properties at these wavelengths. Inaccurate calibration can also distort recorded pulse profiles, introducing noise in time…

High Energy Astrophysical Phenomena · Physics 2023-10-11 Lucas Guillemot , Ismaël Cognard , Willem van Straten , Gilles Theureau , Eric Gérard

The linear polarisation of the Crab pulsar and its close environment was derived from observations with the high-speed photo-polarimeter OPTIMA at the 2.56-m Nordic Optical Telescope in the optical spectral range (400 - 750 nm). Time…

Solar and Stellar Astrophysics · Physics 2009-06-12 Agnieszka Słowikowska , Gottfried Kanbach , Michael Kramer , Alexander Stefanescu