The disturbance of a millisecond pulsar magnetosphere
High Energy Astrophysical Phenomena
2016-08-31 v1 Solar and Stellar Astrophysics
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 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.
Keywords
Cite
@article{arxiv.1608.02163,
title = {The disturbance of a millisecond pulsar magnetosphere},
author = {R. M. Shannon and L. T. Lentati and M. Kerr and M. Bailes and N. D. R. Bhat and W. A. Coles and S. Dai and J. Dempsey and G. Hobbs and M. J. Keith and P. D. Lasky and Y. Levin and R. N. Manchester and S. Oslowski and V. Ravi and D. J. Reardon and P. A. Rosado and R. Spiewak and W. van Straten and L. Toomey and J. -B. Wang and L. Wen and X. -P. You and X. -J. Zhu},
journal= {arXiv preprint arXiv:1608.02163},
year = {2016}
}
Comments
Accepted to ApJ Letters