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Implications of a Possible Clustering of Highest-Energy Cosmic Rays
Gunter Sigl, David N. Schramm, Sangjin Lee and Christopher T. Hill
Proceedings of the National Academy of Sciences of the United States of America
Vol. 94, No. 20 (Sep. 30, 1997), pp. 10501-10505
Published by: National Academy of Sciences
Stable URL: http://www.jstor.org/stable/43367
Page Count: 5
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Recently, a possible clustering of a subset of observed ultra-high energy cosmic rays above ≃ 40 EeV (4 × 1019 eV) in pairs near the supergalactic plane was reported. We show that a confirmation of this effect would provide information on the origin and nature of these events and, in case of charged primaries, imply interesting constraints on the extragalactic magnetic field. Possible implications for the most common models of ultra-high energy cosmic ray production in the literature are discussed.
Proceedings of the National Academy of Sciences of the United States of America © 1997 National Academy of Sciences