Origin of Galaxies and Large Scale Structures

             Riccardo Valdarnini
         SISSA/ISAS, International School for Advanced Studies
         Via Beirut 2, 34014 Trieste, Italy

My research topics in cosmology are the study of the formation and evolution of large scale structure (LSS) in the universe. Over the past decades extended redshift surveys have put in evidence that the galaxy distribution is not random but on large scales ( > 10 Mpc) is arranged in a web of sheet-like structures , with voids between them and filaments at the intersections. The size of these structures can be as large as 50-100 Mpc.