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School of Physics and Astronomy

Modelling Realistic Large Scale Cosmic Structures with Exact Solutions of General Relativity

30 October 2015

Time: 2:30pm
Venue: GO Jones Room 610

Astronomy Unit Seminars
Roberto Sussman
Richard Nelson

We show how a class of exact solutions of Einstein's equations (the Szekeres models) can be worked out to describe an arbitrary number of evolving over-densities and density voids whose spatial location at all times can be prescribed from standard early Universe initial conditions. These configurations provide a fully relativistic and non-perturbative (but coarse grained) description of actually observed 100 Mpc sized structures, which are normally examined by Newtonian n-body simulations or perturbative methods. These networks of evolving multi-structure configurations have an enormous potential for application to address open theoretical and observational issues in Cosmology.