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 Δνg/ν∼7.8×10−6 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.
@article{arxiv.1612.02563,
title = {Pulse profiles and timing of PSR J1757$-$2421},
author = {J. P. Yuan and R. N. Manchester and N. Wang and J. B. Wang and X. Zhou and W. M. Yan and Z. Y. Liu},
journal= {arXiv preprint arXiv:1612.02563},
year = {2017}
}
Comments
9 pages, 8 figures, 5 tables, Accepted for publication in MNRAS