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Switched magnetospheric regulation of pulsar spin-down

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arxiv 1006.5184 v1 pith:5AA4OZEQ submitted 2010-06-27 astro-ph.GA

Andrew Lyne (1) , George Hobbs (2) , Michael Kramer (1 , 3) , Ingrid Stairs (4) , Ben Stappers (1) (1-Jodrell Bank Centre for Astrophysics , University of Manchester , 2 - CSIRO
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ATNF 3 - MPI fuer Radioastronomie 4 - University of British Columbia)
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Pulsars are famed for their rotational clock-like stability and their highly-repeatable pulse shapes. However, it has long been known that there are unexplained deviations (often termed "timing noise") from the rate at which we predict these clocks should run. We show that timing behaviour often results from typically two different spin-down rates. Pulsars switch abruptly between these states, often quasi-periodically, leading to the observed spin-down patterns. We show that for six pulsars the timing noise is correlated with changes in the pulse shape. Many pulsar phenomena including mode-changing, nulling, intermittency, pulse shape variability and timing noise are therefore linked and caused by changes in the pulsar's magnetosphere. We consider the possibility that high-precision monitoring of pulse profiles could lead to the formation of highly-stable pulsar clocks.

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Cited by 3 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Profile Reconstruction from Temporally Stable Emission Components for Timing PSR J1713+0747

    astro-ph.HE 2026-08 conditional novelty 6.0 of 10

    Reconstructing PSR J1713+0747's pulse profile from the two temporally stable central Gaussian components yields a phase-connected timing solution across the 2021 profile-change event with 4.454 microseconds residuals.

  2. Understanding the Neutron Star Population with the SKAO Telescopes

    astro-ph.HE 2026-07 accept novelty 3.5 of 10

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    astro-ph.HE 2026-07 accept novelty 3.5 of 10

    SKAO's sensitivity, surveys and sub-arraying will deliver tighter NS mass, MoI, spin, glitch and precession constraints that, with X-ray and GW data, probe cold ultra-dense matter.

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