Speaker
Description
Clarifying origins and acceleration mechanisms of the most energetic particles in the universe has been the 100-year endeavor, being one of the most intriguing mysteries in an interdisciplinary research among astroparticle physics, high-energy physics and nuclear physics. Since ultra-high energy cosmic rays (UHECRs) are deflected less strongly by the Galactic and extra-galactic magnetic fields due to their enormous kinetic energies, their arrival directions would be correlated with their origins. A next-generation astronomy using UHECRs is hence a potentially viable probe to disentangle mysteries of extremely energetic phenomena in the nearby universe.
In this talk, I will give an introduction of cosmic-ray physics, detection techniques, history over 100 years and the latest results of the two giant observatories in operation; Telescope Array experiment and Pierre Auger Observatory including their on-going upgrades. I will also address scientific objectives, requirements and developments for future UHECR observatories.
