Ateliers action Dark Energy 2022

Session

Joint galaxy clustering and lensing analysis

6 mai 2022, 13:30

Amphithéâtre Gastaut (RDC) (AMU)

3. Review

Eric Jullo (LAM)

06/05/2022 13:30

15. RSD & weak lensing : LCDM is alive and well!

ALAIN BLANCHARD (IRAP , OMP)

06/05/2022 14:00

The $\Lambda$CDM model has successfully passed the confrontation to many observations of cosmological relevances in the past. In recent years, several tensions have been raised up with the increasing accuracy of cosmological data. The amplitude of the matter fluctuations is regarded as one of these serious concerns. We show that redshift space dstorsion from present day surveys provide...

16. Void-Lensing as a test of gravity

Renan Isquierdo Boschetti (CPPM)

06/05/2022 14:20

Voids are one of the building blocks of large scale structure (LSS) that have been capturing the attention of the community in the last decade. The reasons are that they are, in principle, easy to model, found in low density regions, mitigating much of the complications from non-linearities, present higher densities of dark energy and neutrinos than an average environment in LSS and last but...

20. UNIONS: The impact of systematic errors on weak-lensing peak counts

Emma Aycoberry

06/05/2022 14:40

The Ultraviolet Near-Infrared Optical Northern Survey (UNIONS) is an ongoing deep photometric multi-band survey of the Northern sky. As part of UNIONS, the Canada-France Imaging Survey (CFIS) provides r-band data which we use to study weak-lensing peak counts for cosmological inference.
In this talk I will explain how I assess systematic effects for weak-lensing peak counts and their impact...