Astronomy and Astrophysics – Astrophysics
Scientific paper
1995-05-19
Phys.Rev.Lett.75:3056-3059,1995
Astronomy and Astrophysics
Astrophysics
7 pages; 1 figure included; uuencoded, compressed PostScript file; final version, corrected in some points, accepted for publi
Scientific paper
10.1103/PhysRevLett.75.3056
In this Letter we examine the arrival directions of the most energetic cosmic rays (E > 2 * 10^19 eV) detected by several air shower experiments. We find that data taken by different air shower arrays show positive correlations, indicating a non--uniform arrival direction distribution. We also find that the events with energy $ > 4 * 10^19 eV exhibit a correlation with the general direction of the supergalactic plane, where a large number of potential sources is located. If confirmed by data from other experiments our results would support models for the extragalactic origin of the highest energy cosmic rays.
Biermann Peter
Lloyd-Evans Jeremy
Rachen Joerg
Stanev Todor
Watson Alan Andrew
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