The disturbance of a millisecond pulsar magnetosphere

R. M. Shannon; L. T. Lentati; M. Kerr; M. Bailes; N. D. R. Bhat; W. A. Coles; S. Dai; J. Dempsey; G. Hobbs; M. J. Keith; P.D. Lasky; Y. Levin; R. N. Manchester; S. Osłowski; 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

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

The disturbance of a millisecond pulsar magnetosphere

R. M. Shannon, L. T. Lentati, M. Kerr, M. Bailes, N. D. R. Bhat, W. A. Coles, S. Dai, J. Dempsey, G. Hobbs, M. J. Keith, P.D. Lasky, Y. Levin, R. N. Manchester, S. Osłowski, V. Ravi, D. J. Reardon, P. A. Rosado, R. Spiewak, W. Van Straten, L. ToomeyJ. -B. Wang, L. Wen, X. -P. You, X. -J. Zhu

Western Sydney University

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

42 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	Astrophysical Journal Letters
Volume	828
Issue number	1
DOIs	https://doi.org/10.3847/2041-8205/828/1/L1
Publication status	Published - 2016

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

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title = "The disturbance of a millisecond pulsar magnetosphere",

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.",

author = "Shannon, {R. M.} and Lentati, {L. T.} and M. Kerr and M. Bailes and Bhat, {N. D. R.} and Coles, {W. A.} and S. Dai and J. Dempsey and G. Hobbs and Keith, {M. J.} and P.D. Lasky and Y. Levin and Manchester, {R. N.} and S. Os{\l}owski and V. Ravi and Reardon, {D. J.} and Rosado, {P. A.} and R. Spiewak and {Van Straten}, W. and L. Toomey and Wang, {J. -B.} and L. Wen and You, {X. -P.} and Zhu, {X. -J.}",

year = "2016",

doi = "10.3847/2041-8205/828/1/L1",

language = "English",

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Shannon, RM, Lentati, LT, Kerr, M, Bailes, M, Bhat, NDR, Coles, WA, Dai, S, Dempsey, J, Hobbs, G, Keith, MJ, Lasky, PD, Levin, Y, Manchester, RN, Osłowski, S, Ravi, V, Reardon, DJ, Rosado, PA, Spiewak, R, Van Straten, W, Toomey, L, Wang, J-B, Wen, L, You, X-P & Zhu, X-J 2016, 'The disturbance of a millisecond pulsar magnetosphere', Astrophysical Journal Letters, vol. 828, no. 1, L1. https://doi.org/10.3847/2041-8205/828/1/L1

TY - JOUR

T1 - The disturbance of a millisecond pulsar magnetosphere

AU - Shannon, R. M.

AU - Lentati, L. T.

AU - Kerr, M.

AU - Bailes, M.

AU - Bhat, N. D. R.

AU - Coles, W. A.

AU - Dai, S.

AU - Dempsey, J.

AU - Hobbs, G.

AU - Keith, M. J.

AU - Lasky, P.D.

AU - Levin, Y.

AU - Manchester, R. N.

AU - Osłowski, S.

AU - Ravi, V.

AU - Reardon, D. J.

AU - Rosado, P. A.

AU - Spiewak, R.

AU - Van Straten, W.

AU - Toomey, L.

AU - Wang, J. -B.

AU - Wen, L.

AU - You, X. -P.

AU - Zhu, X. -J.

PY - 2016

Y1 - 2016

N2 - 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.

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.

UR - https://hdl.handle.net/1959.7/uws:64060

U2 - 10.3847/2041-8205/828/1/L1

DO - 10.3847/2041-8205/828/1/L1

M3 - Article

SN - 2041-8205

VL - 828

JO - Astrophysical Journal Letters

JF - Astrophysical Journal Letters

IS - 1

M1 - L1

ER -

The disturbance of a millisecond pulsar magnetosphere

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