To use clusters as sensitive probes to study the emergence of cosmic structureand to test cosmological models we need a better knowledge of the scalingrelations of cluster mass and observable properties. To improve this situation aLarge Program was approved in AO3 to study 34 well selected clusters in detail.Of the first obtained observations a relatively large fraction was spoiled byhigh background events. We demonstrate that our observational goals cannot bereached with these compromised observations and request the reobservation of 5of the clusters with the largest loss of exposure time.
Instrument
EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage
2006-01-05T18:55:54Z/2006-01-28T05:33:13Z
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 Hans Boehringer, 2007, 'Reobservation of some Clusters of the XMM Legacy Program for Cluster Structure', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-fyhmdnb
