2023-02-13 Abstract

Title: Large-scale magnetic field and gas reionisation in the evolving universe
Speaker:  Jennifer Y.H. Chan (CITA/U. Toronto)
Date: February 13 at 14:30
Location: R521, General Building II
A correct understanding of the information encoded into cosmic messengers that we receive is essential to optimise the scientific gains from experiments and meaningfully compare theory to observation. In this talk, I will present a solid theoretical foundation of polarised radiative transfer in an expanding and evolving Universe and discuss the associated methodology underpinning the studies of large-scale cosmic magnetism with radio telescopes, such as the Very Large Array (VLA), the Low-Frequency Array (LOFAR), and the Square Kilometre Array (SKA). First, I will provide an overview of the ingredients essential to connecting the theory of magneto-genesis with observations. Then I will present the cosmological polarised radiative transfer (CPRT) formulation and demonstrate how it can be used to reliably predict the polarised radio emissions associated with magnetic fields that co-evolve with cosmic structure formation and evolution. I will conclude by summarising the key findings from the CPRT studies and highlighting the exciting opportunities of theoretical and observation advances in magnetism.