Observation of the suppression of the flux of cosmic rays above 4x10^19eV

By The Pierre Auger Collaboration. 2008

144 citations recorded by the source corpus.

The energy spectrum of cosmic rays above 2.5x10^18eV, derived from 20,000 events recorded at the Pierre Auger Observatory, is described. The spectral index gamma of the flux, J ~ E^-gamma, at energies between 4x10^18eV and 4x10^19eV is 2.69+-0.02(stat)+-0.06(syst), steepening to 4.2+-0.4(stat)+-0.06(syst) at higher energies, consistent with the prediction by Greisen and by Zatsepin and Kuz'min.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/03a9c3244659c4bde59610a387c893059c683831

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In Astronomy and Astrophysics

1. Andrii Y. Neronov
2. Tim Huege
3. R. Durrer
4. Angela V. Olinto
5. Ralph Engel
6. M. Unger
7. R. Ulrich
8. A. V. Vliet

In Nuclear and High Energy Physics

1. Tim Huege
2. Angela V. Olinto
3. K. Kampert
4. Andrii Y. Neronov
5. M. Unger
6. Ralph Engel
7. R. Durrer
8. R. Ulrich

Citations in the corpus

• The Pierre Auger Cosmic Ray Observatory (2015, background): “(events measured simultaneously by the SD and FD), SD 750 m array, SD baseline vertical, and SD baseline horizontal [11, 12].”
• Study of Ultra-High Energy Cosmic Ray composition using Telescope Array’s Middle Drum detector and surface array in hybrid mode (2014, unknown): “[63] [77] [71] [55] [47] [41] [38] [19] [12] [8] [4] [2] < X m ax > [g m /c m 2 ]”
• Cosmological Magnetic Fields: Their Generation, Evolution and Observation (2013, methodology): “Thus, if the PAO result on the correlation with AGN holds, it immediately implies that the UHECR are protons (Z = 1 in Eqs.”