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arXiv · 1612.02563

Pulse profiles and timing of PSR J1757$-$2421

J. P. Yuan·R. N. Manchester·N. Wang·J. B. Wang·X. Zhou·W. M. Yan·Z. Y. Liu
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Abstract

Pulse arrival time measurements over fourteen years with the Nanshan 25-m and Parkes 64-m radio telescopes have been used to determine the average profile and timing properties for PSR J1757$-$2421 (B1754$-$24). Analysis of the radio profile data shows a large variation of spectral index across the profile and an unusual increase in component separation with increasing frequency. The timing observations show that PSR B1754$-$24 underwent a large glitch with a fractional increase in spin frequency of $Δν_{\rm g}/ν\sim 7.8\times10^{-6}$ in May 2011. At the time of the glitch there was a large permanent jump in the rotational frequency accompanied by two exponential recovery terms with timescales of 15(6) and 97(15) days, respectively.

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J. P. Yuan, R. N. Manchester, N. Wang, J. B. Wang, X. Zhou, W. M. Yan, Z. Y. Liu. 2016-12-08. Pulse profiles and timing of PSR J1757$-$2421. https://doi.org/10.1093/mnras%2Fstw3203

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