Coffee talks
Friday 02/02/2024 @ 11:30, Sala riunioni quarto piano e on-line (meet.google.com/sue-bwvk-axf)
Tommaso Ronconi (SISSA, Trieste, TS), "SCAMPy: mock radio skies with realistic clustering cross-matching T-RECS galaxies"
The advent of new observational campaigns and upcoming radio surveys marks a transformative era in radio astrophysics and cosmology. As we anticipate the first light from the SKA Observatory, there is a critical need to prepare for the cosmological interpretation of wide field data. Mock datasets, which simulate expected observations, play a relevant role in this preparation. Empirical methods offer a valuable approach to investigate the galaxy-halo connection without imposing a priori assumptions on uncertain baryonic physics. In this talk I will introduce SCAMPy, a library based on the Sub-halo clustering and abundance matching technique (SCAM), that incorporates Halo Occupation Distribution (HOD) and Sub-Halo Abundance Matching (SHAM). The talk highlights recent extensions and upgrades to SCAMPy and presents applications and results generated for SKAO preparatory science. I will focus on the ongoing efforts to produce mock radio sky observations with realistic clustering properties. This involves coupling SCAMPy with the Tiered Radio Extragalactic Continuum Simulation (T-RECS), an empirical model capable of mimicking the distribution of Star Forming Galaxies, Active Galactic Nuclei, and HI galaxies. I will conclude discussing investigations on the use of reinforcement learning to enhance the galaxy assignment technique beyond the standard sub-halo-mass based models. We explore the impact of secondary halo properties on the galaxy-halo connection and account for cross-correlations between observables.