Ultra-energetic Cosmic Ray Amaterasu Traced to M82, a Nearby Starburst Galaxy
TL;DR Summary
A 244 EeV cosmic ray named Amaterasu, detected in 2021 by the Telescope Array Project, is now thought to originate from a nearby star-forming galaxy, most plausibly M82, rather than the Local Void, after statistical reconstructions that combine simulations of cosmic-ray propagation with observations.
Topics:science#amaterasu#astronomy#local-void#m82#telescope-array-project#ultra-high-energy-cosmic-rays
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