Growth rate measurement with DESI DR1 peculiar velocities

by Dr Julian Bautista (CPPM)

Friday Jun 26, 2026, 11:00 AM → 12:00 PM Europe/Madrid

C7b/058 - Seminar (IFAE Main Building C7b)

Peculiar velocities are a great probe of gravity allowing us to test the validity of general relativity on cosmic scales. I will describe the latest measurement of the growth rate of structures at redshift z = 0.07 using a combination of galaxy positions and direct peculiar velocities from the DESI Peculiar Velocity survey. Our measurements significantly contribute to constraining cosmological parameters encoding deviations from GR, such as the growth index.