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Join this 48-minute lecture where Noémie Globus explores the mysterious sources of ultra-high-energy cosmic rays (UHECR), the most energetic particles in our universe. Discover how magnetic fields serve as crucial "keys" to solving this cosmic puzzle - first by examining their role in particle acceleration processes around neutron stars, black holes, and astrophysical shocks, and second by understanding how these fields influence cosmic-ray propagation through our galaxy and extragalactic medium. Learn how unraveling these magnetic mysteries could potentially help identify the elusive sources of UHECRs, building upon advances made during the Auger and Telescope Array era while addressing questions that remain unanswered in this fascinating field of astrophysics.
