We propose to observe 4 clusters of galaxies with gas temperatures between 3-5keV. This is a critical temperature range in the evolution of clusters andspans the interval from open systems (i.e., groups and poor clusters thatprobably experienced significant gas loss) to closed systems (i.e., richclusters that retained the gas shed by galaxies). Our proposed XMM observationswill determine the temperature and entropy profile of the gas, along with thedistribution of heavy elements. Our sample is chosen so that the radius r_500(within which the mean density is 500 times the critical density) falls withinthe EPIC detectors. From these observations, we can determine the gravitatingmass, gas mass fraction, and Fe mass-to-light ratio at comparable physical radii
Instrument
EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage
2002-04-19T07:49:57Z/2003-01-28T08:26:00Z
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 Laurence David, 2004, 'The Consequences of Galaxy Feedback on Clusters of Galaxies', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-m8m6dzf
