The program is aimed at obtaining a phase-coherent timing solution for theperiod evolution of XTEJ1810-97 (XTE),continuing the successful X-ray monitoringof this unique Anomalous X-ray Pulsar (AXP).XTE is a transient magnetar, aneutron star (NS) whose quiescent emission is likely due to the decay of anextremely strong magnetic field (10e15 G).Previous analysis suggested a longterm precession (2100 d) of the source spin axis.The pointings we request areaimed at studying the period evolution of XTE and prove the long termprecession.XTE could be a unique precessing NS.The effective presence oflong-term precession could shed light on the physical properties of the NScrust/core, thus, on the physical properties of extremely high density matter
Instrument
EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage
2012-09-06T23:02:28Z/2013-03-03T09:14:44Z
Version
17.56_20190403_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, Dr Federico Bernardini, 2014, 'Unveiling the nature of cyclic behavior in the period evolution of XTEJ1810-197', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-lrzk8dm
