Speaker
Bryan Gaensler
(University of Toronto)
Description
The Polarisation Sky Survey of the Universe’s Magnetism (POSSUM; https://possum-survey.org/) commenced in November 2022, and is using ASKAP’s unique survey capabilities to transform our understanding of astrophysical magnetic fields. POSSUM’s core goal is to produce a “rotation measure (RM) grid” of 30–50 polarised background sources per deg^2 over 20,000 deg^2 over 0.8-1.1 GHz. One of the main science goals of POSSUM is to use Faraday rotation to measure and constrain the magnetic fields in filaments, voids and the IGM. I will present an overview of the POSSUM survey, will show initial results, and will discuss the prospects for studying IGM magnetism with POSSUM.
