Bulletin of the American Astronomical Society(2019)
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摘要
GRAND is a planned large-scale observatory of ultra-high energy (UHE) cosmic messengers with energies exceeding 10⁸ GeV. The ultimate goal is to solve the long-standing mystery of the origin of UHE cosmic rays. Three key features of GRAND will make this possible: its large exposure, sub-degree angular resolution, and sensitivity to UHE particles.