Kristine Spekkens
RMC/Queen's University

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. 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 will soon be a full member -- when it comes online towards the end of this decade.

Timbits, coffee, tea will be served in STI A before the colloquium

Tom Stuttard
Niels Bohr Institute

Abstract

The IceCube Neutrino Observatory is the world’s largest neutrino detector and strangest telescope, spanning a cubic-km of transparent glacial ice deep below the surface at the South Pole. Originally built to search for high energy neutrinos of extragalactic origin in an effort to identify the source of cosmic rays, over the last decade physicists have increasingly been exploiting the data from this vast detector as a unique particle physics laboratory.

In this talk I will show how the vast flux of atmospheric neutrinos detected by IceCube, a foreground to astronomers but a gift to particle physicists, is being used to make precision measurements of neutrino oscillations comparable to and complimentary with dedicated accelerator experiments. Furthermore, I will cover how the high energy reach and huge statistics of the detector give a powerful window on BSM oscillation effects, including sterile neutrinos and quantum gravity effects. Finally, I will introduce the upcoming IceCube Upgrade that will provide truly next-generation particle physics capabilities over the coming decade.

This colloquium will be hybrid mode, however we will still be having coffee and tea and timbits in STI A

Lamiya Mowla
University of Toronto/Dunlap Institute

Abstract: TBD

Connor Bottrell
Kavli/Tokyo

Abstract: TBD

Amy Steele
McGill University

Abstract: TBD

Adam Coogan
Université de Montréal

Abstract: TBD