28–30 oct. 2025
LPNHE
Fuseau horaire Europe/Paris

DESI Lyman-alpha forest: BAO and growth of structures

29 oct. 2025, 11:00
40m
Seminar room (LPNHE)

Seminar room

LPNHE

4 Place Jussieu, RC Tour 12/22 salle 08, 75005 Paris

Orateur

Eric Armengaud (IRFU - CEA)

Description

I will present an overview of current cosmological results from the DESI Lyman-alpha forest sample: BAO, a precise Alcock-Paczynski measurement from the 3D full-shape correlations (arxiv:2509.15308), and first measurements of the growth of structures. I will also show first Lya forest measurements using LBG spectra from DESI, instead of quasars (arxiv:2507.21852).
I will show how the Lya forest will be used in synergy with other LSS probes at z>2, to calibrate photo-z and test Dark Energy models.

Auteur

Eric Armengaud (IRFU - CEA)

Documents de présentation