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The disturbance of a millisecond pulsar magnetosphere

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arxiv 1608.02163 v1 pith:SEFNR4AT submitted 2016-08-06 astro-ph.HE astro-ph.SR

R. M. Shannon , L. T. Lentati , M. Kerr , M. Bailes , N. D. R. Bhat , W. A. Coles , S. Dai , J. Dempsey
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G. Hobbs M. J. Keith P. D. Lasky Y. Levin R. N. Manchester S. Oslowski V. Ravi D. J. Reardon P. A. Rosado R. Spiewak W. van Straten L. Toomey J.-B. Wang L. Wen X.-P. You X.-J. Zhu
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classification astro-ph.HEastro-ph.SR
keywords pulsarmillisecondprofilepulsetimingaccountingaccuratelyappears
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Pulsar timing has enabled some of the strongest tests of fundamental physics. Central to the technique is the assumption that the detected radio pulses can be used to accurately measure the rotation of the pulsar. Here we report on a broad-band variation in the pulse profile of the millisecond pulsar J1643-1224. A new component of emission suddenly appears in the pulse profile, decays over 4 months, and results in a permanently modified pulse shape. Profile variations such as these may be the origin of timing noise observed in other millisecond pulsars. The sensitivity of pulsar-timing observations to gravitational radiation can be increased by accounting for this variability.

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Cited by 2 Pith papers

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

  1. The NANOGrav 15 yr Data Set: Customized Chromatic Noise Models

    astro-ph.HE 2026-06 unverdicted novelty 5.0 of 10

    Customized chromatic noise models for 67 pulsars detect non-dispersive delays in 21 cases, alter achromatic noise inferences in 19, and enable solar wind density estimates over 1.5 cycles.

  2. The SKAO Pulsar Timing Array

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

    An SKAO PTA with ~174 millisecond pulsars can dominate nanohertz GW sensitivity within four years and enable continuous-wave detections plus anisotropy maps of the gravitational-wave background.

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