CCO pulsars are stable rotators with weak dipole B-fields and small spin-downrates, and are only detected in X-rays. We have been timing two CCO pulsars for20 years. Surprisingly, we detected a glitch in the CCO 1E 1207.4-5209, which isunprecedented for any pulsar with such a small spin-down rate. This has profoundimplications for both the B-field evolution of CCOs and the mechanisms thattrigger glitches. We are starting to see similar features in the timing of theCCO PSR J0821-4300 in Puppis A, and propose here to continue timing it todistinguish between glitch activity and an alternative of accretion torque noiseat a very low level from fall-back disks around CCOs.
Instrument
EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage
2019-10-09T03:22:12Z/2019-12-26T14:53:06Z
Version
18.00_20191217_1110
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, 2021, 'Monitoring the Extraordinary Timing Behavior of CCO Pulsars', 18.00_20191217_1110, European Space Agency, https://doi.org/10.57780/esa-qw0qrfj
