Most
of my recent work has concentrated on quantifying the various kinds of matter
the Universe in made of, studying its distribution on large scales, and
investigating the formation and evolution of galaxies in various environments
characterised by these different quantities of dark matter.
In doing so, I have carried out, among other things, X-ray and optical studies of clusters and superclusters, studied the photometric and spectroscopic properties of galaxies in these systems, modelled galaxies and clusters as gravitational lenses using x-ray and optical data, and studied the peculiar velocity field in the neighbourhood of our galaxy.
I also coordinate a rapidly growing collaboration, between our group and the School of Computer Science, in developing elegant statistical tools for astronomical data analysis, designed specifically for large archives, such as the emerging Virtual Observatory.