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Related papers: Intermittent nulls in PSR B0818-13, and the subpul…

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The long-term, highly periodic and correlated variations in both the pulse shape and the rate of slow-down of two isolated pulsars (PSRs) PSR B1828-11 and PSR B1642-03 were discovered recently. This phenomenon may provide evidence for "free…

Astrophysics · Physics 2009-11-10 G. J. Qiao , Y. Q. Xue , R. X. Xu , H. G. Wang , B. W. Xiao

Pulsars are the "lighthouses" in the universe. Periodic pulses with the duty-cycle ~10% are detected when the radio beam of the rotating pulsar sweeps across the telescope. In this report, the 160 min-data of a nearby pulsar, PSR B0950+08,…

High Energy Astrophysical Phenomena · Physics 2022-11-16 Zhengli Wang , Jiguang Lu , Jinchen Jiang , Jie Lin , Kejia Lee , Enwei Liang , Renxin Xu

We present timing solutions and spin properties of the young pulsar PSR B0540-69 from analysis of 15.8 yr of data from the Rossi X-Ray Timing Explorer. We perform a partially phase-coherent timing analysis in order to mitigate the…

Solar and Stellar Astrophysics · Physics 2015-10-21 Robert D. Ferdman , Robert F. Archibald , Victoria M. Kaspi

A large sample of pulsars has been observed to study their subpulse modulation at an observing wavelength (when achievable) of both 21 and 92 cm using the Westerbork Synthesis Radio Telescope. In this paper we present the 92-cm data and a…

Astrophysics · Physics 2009-11-13 P. Weltevrede , B. W. Stappers , R. T. Edwards

We describe PSR J1926-0652, a pulsar recently discovered with the Five-hundred-meter Aperture Spherical radio Telescope (FAST). Using sensitive single-pulse detections from FAST and long-term timing observations from the Parkes 64-m radio…

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

A novel scheme has been developed to show that the observed phase behaviour associated with subpulse drifting from two pulsars, J1034$-$3224 and J1720$-$2933, can be used to obtain the magnetic field configuration in the partially screened…

High Energy Astrophysical Phenomena · Physics 2023-05-24 Rahul Basu , Dipanjan Mitra , George I. Melikidze

We report the independent discovery of PSR J0027-1956 with the Murchison Widefield Array (MWA) in the ongoing Southern-sky MWA Rapid Two-meter (SMART) pulsar survey. J0027-1956 has a period of ~1.306 s, a dispersion measure (DM) of ~20.869…

Braking index measurements offer the opportunity to explore the processes affecting the long-term spin evolution of pulsars and possible evolutionary connections between the various pulsar populations. For young pulsars the long-term trends…

High Energy Astrophysical Phenomena · Physics 2017-01-18 C. M. Espinoza , A. G. Lyne , B. W. Stappers

In recent years periodic amplitude modulation has emerged as a unique emission feature in the single pulse sequence of pulsars alongside periodic nulling and subpulse drifting. Despite ample evidence for the uniqueness of this phenomenon,…

High Energy Astrophysical Phenomena · Physics 2025-09-05 Rahul Basu , Dipanjan Mitra , George I. Melikidze

We have detected pulsed X-ray emission from the fastest millisecond pulsar known, PSR B1937+21 (P=1.558 msec), with ASCA. The pulsar is detected as a point source above $\sim 1.7$ keV, with no indication of nebulosity. The source flux in…

Astrophysics · Physics 2009-11-06 M. Takahashi

We report detailed investigation of nulling and drifting behavior of two pulsars PSRs J1741-0840 and J1840-0840 observed from the Giant Meterwave Radio Telescope at 625 MHz. PSR J1741-840 was found to show nulling fraction (NF) of around…

High Energy Astrophysical Phenomena · Physics 2017-10-27 Gajjar Vishal , J. P. Yuan , R. Yuen , Z. G. Wen , Z. Y. Liu , N. Wang

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

We have analyzed single pulses from PSR J0737-3039B, the 2.8-s pulsar in the recently discovered double pulsar system, using data taken with the Green Bank Telescope at 820 and 1400 MHz. We report the detection of features similar to…

Most of pulsar nulling observations were conducted at frequencies lower than 1400~MHz. We aim to understand the nulling behaviors of pulsars at relatively high frequency, and to check if nulling is caused by a global change of pulsar…

High Energy Astrophysical Phenomena · Physics 2021-01-04 P. F. Wang , J. L. Han , L. Han , B. Y. Cai , C. Wang , T. Wang , X. Chen , D. J. Zhou , Y. Z. Yu , J. Han , J. Xu , X. Y. Gao , T. Hong , L. G. Hou , B. Dong

Using the Very Long Baseline Array, we have made astrometric observations of the binary pulsar B1913+16 spanning an 18 month period in 2014 - 2015. From these observations we make the first determination of the annual geometric parallax of…

Solar and Stellar Astrophysics · Physics 2018-08-08 A. T. Deller , J. M. Weisberg , D. J. Nice , S. Chatterjee

The study of pulsar glitch phenomena serves as a valuable probe into the dynamic properties of matter under extreme high-density conditions, offering insights into the physics within neutron stars. Providing theoretical explanations for the…

High Energy Astrophysical Phenomena · Physics 2025-01-07 Pei-Xin Zhu , Xiao-Ping Zheng

The timing properties of radio pulsars provide a unique probe of neutron star interiors. Recent observations have uncovered quasiperiodicities in the timing and pulse properties of some pulsars, a phenomenon that has often been attributed…

High Energy Astrophysical Phenomena · Physics 2017-06-29 D. I. Jones , G. Ashton , R. Prix

Results are presented from a long-term astrometry program on PSR B0919+06 using the NRAO Very Long Baseline Array. With ten observations (seven epochs) between 1994--2000, we measure a proper motion of 18.35 +/- 0.06 mas/yr in RA, 86.56 +/-…

Astrophysics · Physics 2009-10-31 S. Chatterjee , J. M. Cordes , T. J. W. Lazio , W. M. Goss , E. B. Fomalont , J. M. Benson

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