Date/Time
Date(s) - 18/03/2026
10:30 am - 11:30 am

BSB 108

TITLE: Gas Rich Galaxies and Cosmology: Paving the Way to the SKA

ABSTRACT:

The atomic gas (HI) content of nearby galaxies provides important insight into how they form and evolve within the standard cosmology. In this talk, I will highlight some of my group’s recent efforts to build statistical samples of HI disks to use as cosmological probes. I will first describe ongoing tensions between the structure of disk galaxies inferred from their rotation curves and predictions from cosmological simulations of galaxy assembly. I will then describe how the WALLABY widefield HI survey, now underway on the Australian SKA Pathfinder (ASKAP) will deliver population statistics to address these issues, and our progress on that front so far. This work paves the way for probing HI disks across cosmic time using the SKA telescope — an international mega-science project in which Canada is now a member — when it comes online towards the end of this decade.