|Title||Mass and entropy in the most dynamically disturbed REXCESS clusters|
|Author||Dr Gabriel Pratt|
|Description||We propose to re-observe the four most morphologically disturbed clusters in the REXCESS sample. Our aim is to measure the temperature at R_500 and improve the spatial resolution of the temperature profiles in the flat surface brightness central regions, in order to have measurements of similar quality to that available for relaxed systems. With these data we will precisely measure the HE mass profiles, to test the hypothesis that unrelaxed systems have less concentrated mass distributions, a critical test of the dark matter collapse. We will also dramatically improve measurements of the entropy in the central regions, to provide a critical benchmark for numerical simulations.|
|Publication||No observations found associated with the current proposal|
|Instrument||EMOS1, EMOS2, EPN, OM, RGS1, RGS2|
|Mission Description||The European Space Agency's (ESA) X-ray Multi-Mirror Mission (XMM-Newton) was launched by an Ariane 504 on December 10th 1999. XMM-Newton is ESA's 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 Earth's 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.
|Publisher And Registrant||European Space Agency|
|Credit Guidelines||European Space Agency, 2012-05-04T00:00:00Z, 065444, 17.56_20190403_1200. https://doi.org/10.5270/esa-q9zaj1f|