The XMM Cluster Survey (XCS) is a serendipitous X-ray galaxy cluster survey being conducted using archival data taken by ESA’s XMM-Newton satellite. Galaxy clusters trace the large scale structure of the universe, and their number density evolution with redshift provides a way to measure cosmological parameters, independent of cosmic microwave background experiments or supernovae cosmology projects.
- derivation of cosmological parameters
- measurement of X-ray scaling relations and their evolution
- galaxy evolution in dense environments
- properties of unusual (non cluster) X-ray sources, such as high redshift quasars and isolated neutron stars