Séminaires

Julian Bautista : Baryon Acoustic Oscillations in the Lyman-alpha forest of BOSS

Europe/Paris
1222-SB-08 (LPNHE)

1222-SB-08

LPNHE

Description
I will present the current status of the baryon acoustic oscillations measurement using the flux correlation function of BOSS Lyman-alpha forests. The BOSS program is now complete and more than 180 000 forests were measured during 5 years of operation. We currently have a better understanding of systematic errors in our measurement, coming both from astrophysics (spurious absorption by metals) and the data analysis itself (extraction of photons, flux calibration, continuum fitting). I will overview these improvements and also mention plans for future with the eBOSS survey.