Relativistic Cosmology in the linear and non-linear regime

19.01.2018 11:30 – 12:30

In the first part of the seminar I will discuss the lensing and
relativistic effects in the Large Scale Structure (LSS) observables. The
lensing and relativistic effects are corrections to the newtonian
approximation due to the geodesic motion of photons, which travel in a
clumpy universe from the source to the observer. I will review their
relevance for forthcoming redshift surveys, focusing on two aspects:
which is the effect of neglecting their contributions in standard
clustering analysis and which are the perspective of their detection.
The second part will be devoted to the non-linear regime of structure
formation. In particular I will present the status of a project I am
currently working on, which aims to compute and study the vorticity
field from N-body simulations, with the relativistic code gevolution.
This work is relevant for improving our theoretical understanding of the
rotational content of the cosmic flow and for modelling its impact on
galaxy clustering in redshift space.

Lieu

Bâtiment: Ecole de Physique

Salle 234, 24 quai Ernest-Ansermet

Organisé par

Département de physique théorique

Intervenant-e-s

Francesca Lepori

entrée libre

Classement

Catégorie: Séminaire

Mots clés: dpt, Cosmology

Plus d'infos

cosmology.unige.ch/events/seminar

Contact: missing email