by Simon Johnston (CASS)

Brook et al. (2015) show that the profiles of radio pulsars can change with time and that this change is accompanied by changes in the spin-down rate. The figure above shows PSR J1602-5100 with the bottom panel showing the spin-down rate and the middle panel show the profile evolution.

Reference: Brook, P.R., Karastergiou, A., Johnston, S., Kerr, M., Shannon, R. M., Roberts, S.J. 2015, MNRAS, in press