Through the intensive observation of the cluster of galaxy A1413, we propose togain the first precise observational description of the outskirts of a galaxycluster. Precise measurements of the density, the temperature, the mass and theentropy will allow us to investigate the physics at play in these externalregions. We aim to provide the first X-ray observational constraints on thelimit of virialization and thermalization of clusters, on the feedback due togalaxy formation, on the dynamical and thermodynamical states of the accretedmaterial from the cosmic web. We will confront this work with up to datepredictions from numerical simulations in the framework of the formation and theevolution of large-scale structure.
Instrument
EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage
2007-11-23T16:25:45Z/2007-12-12T07:45:32Z
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 Etienne Pointecouteau, 2009, 'Unveiling the physics at play in cluster outskirts', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-o419s0w
