Thursday, June 27, 2013

1306.6138 (Bruce R. Dawson et al.)

The energy spectrum of cosmic rays at the highest energies    [PDF]

Bruce R. Dawson, Ioana C. Maris, Markus Roth, Francesco Salamida, Tareq Abu-Zayyad, Daisuke Ikeda, Dmitri Ivanov, Yoshiki Tsunesada, Mikhail I. Pravdin, Artem V. Sabourov for the Pierre Auger, Telescope Array, Yakutsk Collaborations
One of several working groups established for this workshop was charged with examining results and methods associated with the UHECR energy spectrum. We summarize the results of our discussions, which include a better understanding of the analysis choices made by groups and their motivation. We find that the energy spectra determined by the larger experiments are consistent in normalization and shape after energy scaling factors are applied. Those scaling factors are within systematic uncertainties in the energy scale, and we discuss future work aimed at reducing these systematics.
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