The distribution of dark matter, baryons, and stars in a cluster gravitationalpotential is a fundamental prediction of large-scale structure formation. Wehave 524 orbits of HST imaging together with Subaru and VLT spectroscopy tomeasure the strong and weak lensing properties of 20 relaxed and 5high-magnification galaxy clusters (z = 0.18 - 0.90, Tgas > 5 keV). Observingthe last 3 relaxed clusters with good visibility lacking XMM data will permituniform joint Xray/lensing/SZ analysis for 17 of the relaxed systems to advanceour understanding of the shapes and concentrations of the mass profiles,providing precise observational benchmarks for baryonic and dark matterdistributions over a range of redshifts.
Instrument
EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage
2013-08-22T22:03:38Z/2014-02-09T14:25:01Z
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 Megan Donahue, 2015, 'Baryons and Dark Matter in Hubble Treasury Clusters', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-dxd2r3y
