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Related papers: A Quantitative Model for Drifting Subpulses in PSR…

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We have detected the rare phenomenon of stable, drifting sub-pulse behaviour in two pulsars discovered in the recent Swinburne intermediate latitude pulsar survey. The pulsars; PSR J1231-47 and PSR J1919+0134, have approximate periods (P)…

Astrophysics · Physics 2009-11-07 S. M. Ord , R. Edwards , M. Bailes

In this paper we demonstrate that a large, unexplored reservoir of information about pulsar emission exists, that is directly linked to the radiating particles and their radiation process: We present a study of flux density measurements of…

Astrophysics · Physics 2009-11-10 M. Kramer , A. Karastergiou , Y. Gupta , S. Johnston , N. D. R. Bhat , A. G. Lyne

The radio emission of pulsar B1451-68 contains two polarization modes of similar strength, which produce two clear orthogonal polarization angle tracks. When viewed on a Poincare sphere, the emission is composed of two flux patches that…

High Energy Astrophysical Phenomena · Physics 2020-12-16 J. Dyks , P. Weltevrede , C. Ilie

In 2004, McLaughlin et al. discovered a phenomenon in the radio emission of PSR J0737-3039B (B) that resembles drifting sub-pulses. The repeat rate of the sub-pulses is equal to the spin frequency of PSR J0737-3039A (A); this led to the…

Instrumentation and Methods for Astrophysics · Physics 2015-05-13 P. C. C. Freire , N. Wex , M. Kramer , D. R. Lorimer , M. A. McLaughlin , I. H. Stairs , R. Rosen , A. G. Lyne

The analysis of variations in the emission intensity of the pulsar B0950+08 from 2014 to 2022 with scales from minutes to years was carried out. The observations were obtained in a round-the-clock daily survey conducted on the Large Phased…

High Energy Astrophysical Phenomena · Physics 2025-03-19 T. V. Smirnova , M. O. Toropov , S. A. Tyul'bashev

With the ever-increasing sensitivity and timing baselines of modern radio telescopes, a growing number of pulsars are being shown to exhibit transitions in their rotational and radio emission properties. In many of these cases, the two are…

High Energy Astrophysical Phenomena · Physics 2022-05-11 B. Shaw , B. W. Stappers , P. Weltevrede , P. R. Brook , A. Karastergiou , C. A. Jordan , M. J. Keith , M. Kramer , A. G. Lyne

A successful attempt was made to analyse about 6000 single pulses of PSR B1133+16 obtained with the 100-meter Effelsberg radio-telescope. The high resolution (60 micro-seconds) data were taken at a frequency of 8.35 GHz with a bandwidth of…

Solar and Stellar Astrophysics · Physics 2015-05-30 Sneha Honnappa , Wojciech Lewandowski , Jaroslaw Kijak , Avinash A. Deshpande , Janusz Gil , Olaf Maron , Axel Jessner

We present a detailed single pulse study of PSR B1055-52 based on observations at the Parkes radio telescope. The radio emission is found to have a complex modulation dominated by a periodicity of ~20 times its rotational period P (0.197s),…

Solar and Stellar Astrophysics · Physics 2015-06-04 Patrick Weltevrede , Geoff Wright , Simon Johnston

We present an analysis of 4 nulling pulsars with the Five-hundred-meter Aperture Spherical radio Telescope (FAST). For PSR J1649+2533, our results suggest mode changing rather than subpulse drifting as previously reported at lower…

High Energy Astrophysical Phenomena · Physics 2025-11-07 Jingbo Wang , Jintao Xie , Jing Zou , Jianfei Tang

PSR B0540-69 has braking index measurement in its persistent state: n=2.129 \pm 0.012. Recently, it is reported to have spin-down state changes: a suddenly 36 % increase in the spin-down rate. Combining the persistent state braking index…

High Energy Astrophysical Phenomena · Physics 2016-05-25 F. F. Kou , Z. W. Ou , H. Tong

Time-correlated variations in the pulse profiles of radio pulsars provide insights into changes in their magnetospheres. For a small number of pulsars (~20), these variations have been shown to correlate with spin-down rate. Many of these…

High Energy Astrophysical Phenomena · Physics 2025-05-30 Michael J. Keith , Renée Spiewak , Andrew G. Lyne , Patrick Weltevrede , Danai Antonopoulou , Ben Stappers

We have studied the statistical and polarization properties of giant pulses (GPs) emitted by the millisecond pulsar B1937+21, with high sensitivity and time resolution. The observations were made in June 2005 with the 100-m Robert C. Byrd…

High Energy Astrophysical Phenomena · Physics 2015-06-12 V. I. Zhuravlev , M. V. Popov , V. A. Soglasnov , V. I. Kondrat'ev , Y. Y. Kovalev , N. Bartel , F. Ghigo

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

We present the timing and spectral analyses of theXMM-newton data on the 17-Myr-old, nearby radio pulsar B0950+08. This observation revealed pulsations of the X-ray flux of the pulsar at its radio period. The pulse shape and pulsed fraction…

Astrophysics · Physics 2009-11-10 V. E. Zavlin , G. G. Pavlov

This paper describes a comprehensive measurement model for the error budget of pulse arrival times with emphasis on intrinsic pulse jitterand plasma propagation effects (particularly interstellar scattering), which are stochastic in time…

Instrumentation and Methods for Astrophysics · Physics 2010-10-20 J. M. Cordes , R. M. Shannon

We present an updated phase-coherent timing solution for the young, energetic pulsar PSR B1509-58 for twenty years of data. Using a partially phase-coherent timing analysis, we show that the second frequency derivative is changing in time…

Astrophysics · Physics 2007-05-23 Margaret A. Livingstone , Victoria M. Kaspi , Richard N. Manchester

Arecibo observations of the conal triple pulsar B1918+19 at 0.327- and 1.4-GHz are used to analyse its subpulse behaviour in detail. We confirm the presence of three distinct drift modes (A,B,C) plus a disordered mode (N) and show that they…

Solar and Stellar Astrophysics · Physics 2015-06-15 Joanna M. Rankin , Geoffrey A. E. Wright , Andrew M. Brown

Bright single pulses of many radio pulsars show rapid intensity fluctuations (called microstructure) when observed with time resolutions of tens of microseconds. Here, we report an analysis of Arecibo 59.5 $\mu$sec-resolution polarimetric…

High Energy Astrophysical Phenomena · Physics 2015-02-25 Dipanjan Mitra , Mihir Arjunwadkar , Joanna M. Rankin

We have studied the pulse-to-pulse variability in PSR J1820--0427 and its frequency dependence using high-quality, wide-band observations made from the upgraded Giant Metrewave Radio Telescope (uGMRT; 300-750 MHz) and the Murchison…

High Energy Astrophysical Phenomena · Physics 2023-06-28 Parul Janagal , Manoneeta Chakraborty , N. D. Ramesh Bhat , Samuel J. McSweeney , Susmita Sett

We consider the problem of the thermal X-ray radiation from the hot polar cap of radio pulsars showing evidence of \EB subpulse drift in radio band. In our recent Paper I, using the partially screened gap (PSG) model of inner acceleration…

Astrophysics · Physics 2008-11-26 J. Gil , G. I. Melikidze , B. Zhang
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