JEM EUSO Experiment: Scientific Objectives

Main Objectives:

Exploratory Objectives:



Cosmic Ray UHE spectrum: esperimental results on the existence of the GKZ cut-off. In red data by Auger (2008).




GZK cut-off recently confirmed by Telescope Array






Can we find the origin of these UHE or EHE Cosmic Rays? A 10^20 eV proton is almost not deflected in the galactic and intergalactic magnetic field (uG) so in principle we can try to trace it back to the source ...




Another important result by Auger in 2007: Observation of anisotropy in EHE (E>10^19 eV) CR arrival direction. Can we start to imagine a particle astronomy?