Dortmund 2021 – scientific programme

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T: Fachverband Teilchenphysik

T 50: Eingeladene Vorträge (Invited Topical Talks) IV

T 50.1: Invited Topical Talk

Wednesday, March 17, 2021, 14:00–14:30, HS 1

Gamma-ray Propagation as a Probe for Cosmology and Fundamental Physics — •Manuel Meyer — Erlangen Center for Astroparticle Physics, Erwin-Rommel-Str. 1, 91058 Erlangen, Germany

Observations of gamma rays produced in active galactic nuclei -- the most powerful persistent sources in the Universe -- offer the unique opportunity to study a range of open questions in cosmology and fundamental physics. In particular, gamma-ray observations can constrain the interaction of photons with axion-like particles as well as the strength of intergalactic magnetic fields. Such fields are thought to act as a seed for magnetic fields ubiquitously observed in galaxies and galaxy clusters. In this talk, I will review how current and future gamma-ray observatories enable us to study these phenomena.