Ultra high energy cosmic ray spectrum

Details Ultra high energy cosmic ray spectrum Ultra high energy cosmic ray spectrum

Aug 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985icrc....2..146b&link_type=abstract

In NASA. Goddard Space Flight Center 19th Intern. Cosmic Ray Conf., Vol. 2 p 146-149 (SEE N85-34006 22-93)

Physics

Cosmic Ray Showers, Cosmic Rays, Energy Spectra, Galactic Radiation, Ionization Potentials, Ionizing Radiation, Losses, Mirrors, Normal Density Functions, Photomultiplier Tubes

Scientific paper

Ultra-high energy cosmic rays have been observed by means of atmospheric fluorescence with the Fly's Eye since 1981. The differential energy spectrum above 0.1 EeV is well fitted by a power law with slope 2.94±0.02. Some evidence of flattening of the spectrum is observed for energies greater than 10 EeV, however only one event is observed with energy greater than 50 EeV and a spectral cutoff is indicated above 70 EeV.

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