The origin of cosmic-rays, the most energetic radiation from our Universe, is among the most important but yet unresolved problems in astrophysics. International Center for Hadron Astrophysics, or ICEHAP, was established in January 2012 within the Graduate School of Science of the Chiba University aiming at resolving this long-standing puzzle. ICEHAP addresses the high energy astro-particle physics through the experiment of high energy neutrino detection, the theoretical simulations by super-computers, and their cross-boundary studies between experiments and theories.
ICEHAP consists of divisions of Neutrino Astronomy, and of Plasma Astrophysics. The Neutrino Astronomy division participates the IceCube Neutrino Observatory being operated at the South Pole, and is among the leading institutions to search for ultra-high energy cosmic neutrinos, the key to understand how our Universe is producing protons and neutrons with such tremendous energies. The center is also involved with its future project, ARA, to further enlarge our ability of ultra-high energy neutrino detection in order to map out the ultra-high energy Universe.
The Plasma Astrophysics devision is developing large scale numerical simulations of the magnetized plasma flows by super-computers to understand mechanisms of energy release from a massive black hole, formulation of cosmic jets, and acceleration of electrons and protons to relativistic energies.