The Extraordinary Glitch Behaviour of CCO Pulsar 1E 1207.4-5209

CCO pulsars are stable rotators with weak dipole Bfields and small spindownrates. Old radio pulsars with similar spin parameters as CCOs are never seen toglitch. However, the CCOs are much younger than their timing ages, and we havediscovered the first CCO glitch, in our Xray monitoring of 1E 1207.45209. CCOsare theorized to have strong, buried crustal Bfields that will diffuse out in<1 Myr. The detection of a glitch therefore supports a recent conjecture thatthey could be triggered by the diffusion of these strong fields. We propose tocontinue timing 1E 1207.45209, to verify the unexpected large change in itspostglitch spindown rate, and to monitor the CCO in Puppis A for similarglitches. These observations may allow a first measurement of NS surface magnetic field growth truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]