Cosmology results from DESI Year 1 BAO
Otávio Alves
Cosmology in the Adriatic — From PT to AI July 19, 2024. Split, Croatia
PT vs AI
PT vs AI
0 × 10
BAO measurements
thecov
theoretical covariances of power spectrum multipoles
- Based on Wadekar & Scoccimarro 2019.
- Trispectrum at tree-level using Kobayashi 2023.
Measuring the BAO scale at multiple redshifts
Adding information on the sound horizon scale
Constraints on the Hubble constant
CMB is sensitive to the sum of neutrino masses
Through:
- angular diameter distance to recombination
- neutrino effects in CMB lensing
But it's degenerate with the Hubble constant and matter density.
DESI pushes the constraints to lower masses
DESI pushes the constraints to lower masses
DESI + CMB + SN (Pantheon+, Union3 or DES SN5YR) excludes Λ at (2.5σ, 3.5σ, 3.9σ).
DESI + CMB + SN (Pantheon+, Union3 or DES SN5YR) excludes Λ at (2.5σ, 3.5σ, 3.9σ).
In the near future
-
Y1 full-shape
measurements of the power spectrum -
Y3 BAO
following Y1 methodology -
thecov
v1 soon to be released for public use.
