The Science Case of the JEM-EUSO Mission-Unveiling the Universe at ultra-high energies

Details The Science Case of the JEM-EUSO Mission-Unveiling the Universe at ultra-high energies The Science Case of the JEM-EUSO Mission-Unveiling the Universe at ultra-high energies

Jun 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aipc.1238..380s&link_type=abstract

TOURS SYMPOSIUM ON NUCLEAR PHYSICS AND ASTROPHYSICS-VII. AIP Conference Proceedings, Volume 1238, pp. 380-387 (2010).

Physics

Nuclear Physics

1

Telescopes, Interplanetary Magnetic Fields, X-Ray Sources (Astronomical), Cosmic Ray Showers, Space-Based Ultraviolet, Optical, And Infrared Telescopes, Interplanetary Magnetic Fields, X-Ray Sources, X-Ray Bursts, Extensive Air Showers

Scientific paper

The Extreme Universe Space Observatory onboard the Japanese Experiment Module is an international mission designed to identify the astrophysical origin and physical nature of ultra high-energy (UHE) cosmic particles with energies E>7×1019 eV. It uses a near-UV 2.5 m diameter telescope with a field of view of 60 degrees to detect the fluorescence and Cherenkov light emitted along the linear track generated by UHE particle traversing the earth's atmosphere. The JEM-EUSO mission is designed to observe at least 103 particles. The energy and arrival direction of each particle will be accurately measured while all-sky is covered and monitored. The primary science goal of the mission is particle astronomy. The high statistics of JEM-EUSO will be essential to identify the sources of the highest energy particles, and to measure their spectrum. This will allow a deeper understanding of the production, acceleration, and in situ propagation mechanisms of UHE cosmic rays. Through the study of the sky distribution of these extreme events, we can probe the galactic and local extragalactic magnetic field. The spectrum of scientific goals of the JEM-EUSO mission includes as exploratory objectives the detection of UHE γ-rays and neutrinos, and tests of relativity and quantum gravity effects at extreme energies. Other aspects of fundamental physics that will be studied include predictions of top-down models and the behavior of neutrino cross sections at extreme energies. Eventually, JEM-EUSO will also systematically survey atmospheric phenomena over the Earth surface. In this paper we summarize the science case and objectives of this challenging but fascinating mission.

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