DESI Peculiar Velocity survey

Based on realistic DESI fiber assignment simulations and spectroscopic success rates, we predict the final DESI PV Survey will obtain ~133000 FP-based and ~53000 TF-based PV measurements over an area of 14000deg^2^. We forecast the ability of using these data to measure the clustering of galaxy positions and PVs from the combined DESI PV and Bright Galaxy Surveys (BGS), which allows for cancellation of cosmic variance at low redshifts.

With these forecasts, we anticipate a 4% statistical measurement on the growth rate of structure at z<0.15. This is over two times better than achievable with redshifts from the BGS alone. The combined DESI PV and BGS will enable the most precise tests to date of the time and scale dependence of large-scale structure growth at z<0.15.