par Shinozaki, Kenji;Toscano, Simona ; [et al.]
Référence 33rd International Cosmic Rays Conference, ICRC 2013(Code 135187: 2 July: Rio de Janeiro; Brazil), Proceedings of the 33rd International Cosmic Rays Conference, Sociedade Brasileira de Fisica, Bresil
Publication Publié, 2013-10
Publication dans des actes
Résumé : The nature of the ultra-high energy cosmic rays (UHECRs) remains unsolved mystery mainly due to severely low fluxes for ground-based observatories. The JEM-EUSO (Extreme Universe Space Observatory on-board the Japanese Experiment Module) mission operates huge-aperture UHECR observation via extensive air shower (EAS) observation from the International Space Station. To evaluate the performance in exposure, a large number of EAS simulations are generated taking into account EAS properties, background noise, role of the cloud and the configuration of the JEM-EUSO telescope. The results show that observation to the nadir direction reaches about 9 times annual exposures compared to that is achieved by the largest existing detector. The enhancement of exposure by tilting the telescope is also demonstrated. Operating on the orbit allows the full coverage of the Celestial at high degree of uniformity for the analysis of the UHECR arrival direction distribution