085322

CCO pulsars are stable rotators with weak dipole B-fields and small spin-down rates comma and are only detected in X-rays. We have been timing two CCO pulsars for 20 years. Surprisingly comma we detected a glitch in the CCO 1E 1207.4-5209 comma which is unprecedented for any pulsar with such a small spin-down rate. This has profound implications for both the B-field evolution of CCOs and the mechanisms that trigger glitches. We are starting to see similar features in the timing of the CCO PSR J0821-4300 in Puppis A comma and propose here to continue timing it to distinguish between glitch activity and an alternative of accretion torque noise at a very low level from fall-back disks around CCOs.