PIRSA:24100119

Cosmology from the DESI Data Release 1

Alves, O. (2024). Cosmology from the DESI Data Release 1. Perimeter Institute. https://pirsa.org/24100119

Alves, Otávio. Cosmology from the DESI Data Release 1. Perimeter Institute, Oct. 22, 2024, https://pirsa.org/24100119 

          @misc{ pirsa_PIRSA:24100119,
            doi = {10.48660/24100119},
            url = {https://pirsa.org/24100119},
            author = {Alves, Ot{\'a}vio},
            keywords = {Cosmology},
            language = {en},
            title = {Cosmology from the DESI Data Release 1},
            publisher = {Perimeter Institute},
            year = {2024},
            month = {oct},
            note = {PIRSA:24100119 see, \url{https://pirsa.org}}
          }

Otávio Alves

University of Michigan

Talk number
PIRSA:24100119
Collection
Talk Type
Subject
Abstract

On April 4th, 2024, the Dark Energy Spectroscopic Instrument (DESI) released its first set of cosmological results based on measurements of the baryon acoustic oscillations (BAO) scale in the spatial distribution of galaxies and quasars, and in the Lyman-alpha forest. Those measurements constrain the expansion history of the Universe in the redshift range 0.1 < z < 4.16, with implications for studies of dark energy, neutrino cosmology and the Hubble constant. To make the most of the cosmological information content of the galaxy & quasar distributions, we now analyze the full shape of their power spectra, constraining the evolution of the large scale structure of the Universe over the range 0.1 < z < 2.1. In this talk, following a brief overview of the DESI instrument and observations, we will present the latest public results, discuss some of their main cosmological implications, highlight efforts towards the full shape results and expectations for the next data release.