Amaterasu Cosmic Ray Likely Origin Traced to M82 Galaxy
Researchers using 3D propagation simulations and Approximate Bayesian Computation link the Amaterasu ultra-high-energy cosmic ray (detected by the Telescope Array Project in 2021 at >240 EeV) to the nearby star-forming M82 galaxy, rather than the Local Void, showcasing a data-driven approach to tracing UHECR sources and advancing astro-particle physics.