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arXiv · 1007.1143

A very large glitch in PSR B2334+61

J. P. Yuan·R. N. Manchester·N. Wang·Xia Zhou·Z. Y. Liu·Z. F. Gao
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Abstract

Seven years of pulse time-of-arrival measurements have been collected from observations of the young pulsar PSR B2334+61 using the Nanshan radio telescope of Urumqi Observatory. A phase-connected solution has been obtained over the whole data span, 2002 August to 2009 August. This includes a very large glitch that occurred between 2005 August 26 and September 8 (MJDs 53608 and 53621). The relative increase in rotational frequency for this glitch, $Δν_{g}/ν~\sim~20.5\times10^{-6}$, is the largest ever seen. Although accounting for less than 1\% of the glitch, there were two well-defined exponential decay terms with time constants of 21 and 147 days respectively. There was also a large long-term increase in the spindown rate with $Δ\dotν_p/\dotν\sim 0.011$ at the time of the glitch. A highly significant oscillation with a period of close to one year is seen in the post-glitch residuals. It is very unlikely that this can be accounted for by a pulsar position error or proper motion -- it appears to result from effects interior to the neutron star. Implications of these results for pulsar glitch models are discussed.

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J. P. Yuan, R. N. Manchester, N. Wang, Xia Zhou, Z. Y. Liu, Z. F. Gao. 2010-07-07. A very large glitch in PSR B2334+61. https://doi.org/10.1088/2041-8205%2F719%2F2%2Fl111

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