Professor Evrard studies phenomenological problems in cosmology. His particular area of expertise is computational modeling of the formation and evolution of large-scale cosmic structure. By modeling the complex astrophysical processes that shape the development of its visible components, from globular star clusters to giant galaxy clusters, “virtual worlds” are created within the framework of a particular cosmology. Mock observations of the structures contained on virtual skies offer a means for direct comparison to realworld observations obtained from ground- and space-based telescopes. Comparative studies of statistical samples of objects are then used to address questions ranging from the fundamental (What are the energy and matter components that dominate our universe?) to the detailed (How much material is lost by a typical galaxy over its lifetime?).

Professor Evrard is a member of the Virgo Consortium, an international group of computational cosmologists. Modeling by him and his group is done on supercomputers located in Michigan’s Center for Academic Computing and in other computational centers in the U.S., U.K., and Germany. Support for Professor Evrard’s research has come from NASA, NSF, NATO and the University of Michigan.

For more information on Professor Evrard, see his homepage.

Future Evolution of Cosmic Structure in an Accelerating Universe (Busha, M.T., Adams, F.C., Wechsler, R.H. & Evrard, A.E.), Astrophysical Journal Vol. 596 Issue 2, 713-724 (October, 2003).

Galaxy Clusters in Hubble Volume Simulations: Cosmological Constraints from Sky Survey Populations, (Evrard, A. E., MacFarland, T. J., Couchman, H. M. P., Colberg, J. M., Yoshida, N., White, S. D. M., Jenkins, A., Frenk, C. S., Pearce, F. R., Peacock, J. A., Thomas, P. A.), Astrophysical Journal 573 Issue 1, 7-36 (July, 2002).

The Mass Function of Dark Matter Haloes, (Jenkins, A., Frenk, C. S., White, S. D. M., Colberg, J. M., Cole, S., Evrard, A. E., Couchman, H. M. P., Yoshida, N.), Monthly Notices of the Royal Astronomical Society 321, Issue 2, 372-384 (February, 2001).

Properties of the Intracluster Medium in an Ensemble of Nearby Galaxy Clusters, (Evrard, A. E., Mohr, J. J., Mathiesen, B.), Astrophysical Journal 517, 627 (June, 1999).

The Intracluster Gas Fraction in X-ray Clusters - Constraints on the Clustered Mass Density, (Evrard, A. E.), Monthly Notices of the Royal Astronomical Society 292, 289 (December, 1997).

Mass Estimates of X-Ray Clusters, (Evrard, August E., Metzler, Christopher A., Navarro, Julio F.), Astrophysical Journal 469, 494 (October, 1996).

Two-Fluid Simulations of Galaxy Formation, (Evrard, August E., Summers, F. J., Davis, Marc), Astrophysical Journal 422, no. 1, 11-36 (February, 1994).

The Baryon Content of Galaxy Clusters - a Challenge to Cosmological Orthodoxy, (White, S. D. M., Navarro, J. F., Evrard, A. E., Frenk, C. S.), Nature 366, no. 6454, 429 (December, 1993).

Formation and Evolution of X-ray Clusters—A Hydrodynamic Simulation of the Interacluster Medium, (Evrard, A. E.), Astrophysical Journal 363, 349 (November, 1990).