September 11, 2017 to October 6, 2017
Institut de Physique Théorique, CEA Saclay
Europe/Paris timezone
Please register for the program DarkMod

Achitouv: "Probing dark energy with cosmic voids"

Sep 26, 2017, 12:25 PM
Institut de Physique Théorique, CEA Saclay

Institut de Physique Théorique, CEA Saclay

Orme des Merisiers batiment 774 Point courrier 136 CEA/DSM/IPhT, CEA/Saclay F-91191 Gif-sur-Yvette Cedex FRANCE


Cosmic voids can supply powerful insights into the nature of dark energy, provided that we have accurate models of their statistical properties. In this talk I will present a new method to predict void density profiles, and show how we can reduce systematic errors when probing the growth rate around voids. This will be crucial for testing non-standard dark energy models with upcoming large survey campaigns. Finally, I will also present a self-consistent measurement of the growth rate around galaxies and around voids, in the 6- degree Field Galaxy Survey, as a test of the standard model of gravity.

Presentation materials