Monitoring the Unexpected Glitches of CCO Pulsars

CCO pulsars are stable rotators with weak dipole Bfields and small spindownrates. We have been timing two CCO pulsars for 20 years. In 2016 there was aglitch in 1E 1207.45209, which is unprecedented for a pulsar with such a smallspindown rate, and has profound implications for the Bfield evolution of CCOsand the mechanism(s) that trigger glitches. We must continue to time this eventto distinguish between a very slow glitch recovery and a permanent, largeincrease in its spindown rate. We see similar features in recent timing of PSRJ08214300 in Puppis A, and did initiate in October 2019 a new phaseconnectedtiming solution to ensure a precise cycle count that will resolve the nature ofits timing anomaly. This proposal is also to continue monitoring PSR J08214300. truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]