Orateur
Description
We present the first forecast for the measurement of the cosmic growth-rate parameter, fσ8, using peculiar velocities (PVs) derived from Type Ia supernovae (SNe Ia) in the Vera C. Rubin Observatory’s Legacy Survey of Space and Time (LSST). We produce simulations of different SNe types using a realistic LSST observing strategy, incorporating noise, photometric detection from the Difference Image Analysis (DIA) pipeline, and the PV field modeled from the Uchuu Universe Machine simulations. Using the maximum likelihood method, we show that LSST can measure fσ8 with an accuracy of 10% in the redshift range 0.02 < z < 0.14 for our most realistic scenario.
We present the future projects of the DESC PV group that summarize the last updates discussed during the DESC workshop which happened last September in Marseille.
