Szekeres models, the Zeldovich approximation and multi-structure collapse |
| סוג | Seminar in GR and Cosmology |
| מרצה: | Prof. Roberto Sussman |
| שיוך: | National University of Mexico |
| תאריך: | 23.06.2016 |
| שעה: | 14:00 |
| מיקום: | Lidow 620 |
| תקציר: | We examine the evolution and collapse of multiple 30-100 Mpc sized "pancake" and "filament" shaped CDM structures constructed by means of the Szekeres dust models. The dynamics of these structures is equivalent to a fully relativistic generalization of the Zeldovich approximation, thus allowing for a fully relativistic generalization of the Newtonian "spherical" and "elliptic" collapse models used in numerical simulations. The Szekeres multi-structure models are potentially useful in fitting observations whenever a non-perturbative and fully relativistic approach is needed.= |