The disturbance of a millisecond pulsar magnetosphere

Ryan M Shannon; Lindley Lentati; Matthew Kerr; Matthew Bailes; N. D R Bhat; William A Coles; Shi Dai; James Dempsey; George B Hobbs; Miranda J Keith-Roach; Yuri Levin; Richard Norman Manchester; S. Osłowski; Vikram Ravi; Daniel Reardon; Pablo Rosado; Renee Spiewak; Willem van Straten; Lawrence Toomey; J.-B. Wang; Li Wen; X. P. You; Xing Jiang Zhu

doi:10.3847/2041-8205/828/1/L1

The disturbance of a millisecond pulsar magnetosphere

Ryan M Shannon, Lindley Lentati, Matthew Kerr, Matthew Bailes, N. D R Bhat, William A Coles, Shi Dai, James Dempsey, George B Hobbs, Miranda J Keith-Roach, Yuri Levin, Richard Norman Manchester, S. Osłowski, Vikram Ravi, Daniel Reardon, Pablo Rosado, Renee Spiewak, Willem van Straten, Lawrence Toomey, J.-B. WangLi Wen, X. P. You, Xing Jiang Zhu

School of Physics and Astronomy

Research output: Contribution to journal › Article › Research › peer-review

39 Citations (Scopus)

Abstract

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 broadband variation in the pulse profile of the millisecond pulsar J1643-1224. A new component of emission suddenly appears in the pulse profile, decays over four 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.

Original language	English
Article number	L1
Number of pages	6
Journal	The Astrophysical Journal Letters
Volume	828
Issue number	1
DOIs	https://doi.org/10.3847/2041-8205/828/1/L1
Publication status	Published - 1 Sept 2016

Keywords

pulsars: general
pulsars: individual (PSR J16431224)
stars: neutron

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10.3847/2041-8205/828/1/L1

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Shannon, R. M., Lentati, L., Kerr, M., Bailes, M., Bhat, N. D. R., Coles, W. A., Dai, S., Dempsey, J., Hobbs, G. B., Keith-Roach, M. J., Levin, Y., Manchester, R. N., Osłowski, S., Ravi, V., Reardon, D., Rosado, P., Spiewak, R., van Straten, W., Toomey, L., ... Zhu, X. J. (2016). The disturbance of a millisecond pulsar magnetosphere. The Astrophysical Journal Letters, 828(1), Article L1. https://doi.org/10.3847/2041-8205/828/1/L1

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abstract = "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 broadband variation in the pulse profile of the millisecond pulsar J1643-1224. A new component of emission suddenly appears in the pulse profile, decays over four 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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Shannon, RM, Lentati, L, Kerr, M, Bailes, M, Bhat, NDR, Coles, WA, Dai, S, Dempsey, J, Hobbs, GB, Keith-Roach, MJ, Levin, Y, Manchester, RN, Osłowski, S, Ravi, V, Reardon, D, Rosado, P, Spiewak, R, van Straten, W, Toomey, L, Wang, J-B, Wen, L, You, XP & Zhu, XJ 2016, 'The disturbance of a millisecond pulsar magnetosphere', The Astrophysical Journal Letters, vol. 828, no. 1, L1. https://doi.org/10.3847/2041-8205/828/1/L1

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AU - Shannon, Ryan M

AU - Lentati, Lindley

AU - Kerr, Matthew

AU - Bailes, Matthew

AU - Bhat, N. D R

AU - Coles, William A

AU - Dai, Shi

AU - Dempsey, James

AU - Hobbs, George B

AU - Keith-Roach, Miranda J

AU - Levin, Yuri

AU - Manchester, Richard Norman

AU - Osłowski, S.

AU - Ravi, Vikram

AU - Reardon, Daniel

AU - Rosado, Pablo

AU - Spiewak, Renee

AU - van Straten, Willem

AU - Toomey, Lawrence

AU - Wang, J.-B.

AU - Wen, Li

AU - You, X. P.

AU - Zhu, Xing Jiang

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AB - 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 broadband variation in the pulse profile of the millisecond pulsar J1643-1224. A new component of emission suddenly appears in the pulse profile, decays over four 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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KW - pulsars: individual (PSR J16431224)

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The disturbance of a millisecond pulsar magnetosphere

Abstract

Keywords

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An upgraded pulsar timing array for gravitational wave detection

Gravitational-wave astrophysics of binary black holes

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The disturbance of a millisecond pulsar magnetosphere

Abstract

Keywords

Access to Document

Other files and links

Projects

An upgraded pulsar timing array for gravitational wave detection

Gravitational-wave astrophysics of binary black holes

Cite this