Until recently, CCO pulsars, with weak dipole B-fields and small spin-downrates, were defined as stable rotators. Now, long-term timing of 1E 1207.4-5209revealed unexpected timing glitches and/or strong timing noise, unprecedentedfor a pulsar with such small spin-down rates, and has profound implications forthe B-field evolution of CCOs and their emission mechanism(s). It may support atimely conjecture that glitches could be triggered in CCOs by diffusion of astrong, buried internal field that rivals those found in magnetars. We now haveevidence of similar timing behaviour from the CCO PSR J0821-4300 in Puppis A. Wepropose to monitor PSR J0821 4300 to resolve the nature of its timing anomaly,possible new evidence of magnetic field growth on a CCO.
Instrument
EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage
2021-05-03T23:39:17Z/2021-10-22T16:15:26Z
Version
PPS_NOT_AVAILABLE
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, Dr Eric Gotthelf, 2022, 'Evidence for Glitch Activity from a Second CCO\: PSR J0821-4300', PPS_NOT_AVAILABLE, European Space Agency, https://doi.org/10.57780/esa-z2qoxwl
