CCO pulsars are stable rotators with weak dipole B-fields and small spin-downrates. We have been timing two CCO pulsars for 20 years. In 2016 there was aglitch in 1E 1207.4-5209, which is unprecedented for a pulsar with such a smallspin-down rate, and has profound implications for the B-field 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 spin-down rate. We see similar features in recent timing of PSRJ0821-4300 in Puppis A, and did initiate in October 2019 a new phase-connectedtiming solution to ensure a precise cycle count that will resolve the nature ofits timing anomaly. This proposal is also to continue monitoring PSR J0821-4300.
Instrument
EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage
2020-06-22T02:55:00Z/2020-12-25T14:22:31Z
Version
18.02_20200221_1200
Mission Description
The European Space Agencys (ESA) X-ray Multi-Mirror Mission (XMM-Newton) was launched by an Ariane 504 on December 10th 1999. XMM-Newton is ESAs second cornerstone of the Horizon 2000 Science Programme. It carries 3 high throughput X-ray telescopes with an unprecedented effective area, and an optical monitor, the first flown on a X-ray observatory. The large collecting area and ability to make long uninterrupted exposures provide highly sensitive observations. Since Earths atmosphere blocks out all X-rays, only a telescope in space can detect and study celestial X-ray sources. The XMM-Newton mission is helping scientists to solve a number of cosmic mysteries, ranging from the enigmatic black holes to the origins of the Universe itself. Observing time on XMM-Newton is being made available to the scientific community, applying for observational periods on a competitive basis.
European Space Agency, Prof Jules Halpern, 2022, 'Monitoring the Unexpected Glitches of CCO Pulsars', 18.02_20200221_1200, European Space Agency, https://doi.org/10.57780/esa-dw8g5yq
