Evolution of the X-ray Properties of Clusters of Galaxies

J. Patrick Henry
Institute for Astronomy
                       
We describe the observed evolution of galaxy cluster X-ray luminosities,
temperatures and the relation between them. The cluster luminosity -
temperature relation does not appear to evolve much. Cluster X-ray
luminosities do evolve and we attempt to characterize that evolution using
two large high redshift samples. Cluster X-ray temperatures also evolve.
We use that evolution to constrain the dark matter and dark energy content
of the universe as well as other parameters of cosmological interest.