July 28, 2025 to August 1, 2025
Perimeter Institute for Theoretical Physics
America/Toronto timezone

Probing cosmic plasmas at sub-au scales with fast radio bursts

Aug 1, 2025, 11:25 AM
20m
PI/1-100 - Theatre (Perimeter Institute for Theoretical Physics)

PI/1-100 - Theatre

Perimeter Institute for Theoretical Physics

190
Research Talk

Speaker

Stella Koch Ocker (California Institute of Technology)

Description

Fast radio bursts (FRBs) are dispersed and scattered by plasma density fluctuations along the line-of-sight, making them sensitive probes of diffuse ionized gas across interstellar, circumgalactic, and intergalactic media. In this talk I will discuss how FRB propagation effects are unveiling cosmic plasmas at extremely small (sub-au) spatial scales in both interstellar and circumgalactic media, and how they may be used in tandem with quasars to constrain the turbulent dynamics of ionized gas in these environments.

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