Our current understanding of the X-ray properties of galaxy groups is limited bypoor quality data and an inhomogeneous and non-representative coverage of themass function. We propose to make deep observations of a representative, X-rayluminosity selected sample of 9 galaxy groups drawn from a complete flux-limitedcatalogue. We will measure the temperature out to R_500 with similar accuracy tothat available for high quality observations of nearby clusters (e.g., REXCESS).We will investigate the relative importance of gravitational andnon-gravitational processes in setting the observed X-ray properties of groupscale haloes, via extensive examination of their structural and scalingproperties.
Instrument
EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage
2010-11-15T18:30:16Z/2011-04-25T05:54:22Z
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 Gabriel Pratt, 2012, 'Observations of a representative X-ray luminosity selected galaxy group sample', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-50l6ym5
