Modelling realistic large scale cosmic structures with exact solutions of General Relativity

Series: 
Astronomy Unit Seminars
Speaker: 
Roberto Sussman
Host: 
Richard Nelson
Date: 
October 30th, 2015 at 14:30
Room: 
GO Jones Room 610
Abstract: 

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.