A dataset provided by the European Space Agency

Name 065444
Title Mass and entropy in the most dynamically disturbed REXCESS clusters


DOI https://doi.org/10.5270/esa-q9zaj1f
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
Temporal Coverage 2010-05-12T07:36:57Z/2011-04-10T21:51:15Z
Version 17.56_20190403_1200
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.
Creator Contact https://www.cosmos.esa.int/web/xmm-newton/xmm-newton-helpdesk
Date Published 2012-05-04T00:00:00Z
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