We propose to observe 14 intermediate redshift massive clusters of galaxiesdiscovered via the Sunyaev-Zel.dovich (SZ) effect by the South Pole Telescope(SPT). Currently the SPT survey has measured redshifts for 194 clusters, themajority of which are newly discovered clusters at z > 0.5. We propose toobserve a sub-sample of SPT clusters at redshifts between 0.3 < z < 0.5 toobtain well calibrated Yx-derived mass estimates. With these mass estimates andthe WMAP 7-year results, we expect that the SPT survey will allow a 7%constraint on w, the dark energy equation of state, a factor of 2 improvementover comparable constraints using cluster evolution and WMAP from Vikhlinin etal.(2009).
Instrument
EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage
2011-05-03T09:39:42Z/2012-04-26T19:19:39Z
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 Bradford Benson, 2013, 'Cosmological Constraints from X-ray Observations of SZ Discovered Clusters', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-vm1vapf
