Spectrum of cosmic rays with energy above $10^{17}$ eV

Abstract

There are some discrepancies in the results on energy spectrum from Yakutsk, AGASA, and HiRes experiments. In this work differential energy spectrum of primary cosmic rays based on the Yakutsk EAS Array data is presented. For the largest events values of $S_{600}$ and axes coordinates have been obtained using revised lateral distribution function. Simulation of converter's response at large distances showed no considerable underestimation of particle density. Complex shape of spectrum in region of $\E > 10^{17}$ eV is confirmed. After adjustment of parameters and additional exposition at the Yakutsk array there are three events with energy $\E > 10^{20}$ eV.

arXiv commentXIII International Symposium on Very High Energy Cosmic Ray Interaction, Pylos Greece, 6 - 12 Sep 2004. Four pages, one figure. Submitted for publication in Nuclear Physics (B)

References in corpus (2)

• On the statistical significance of the GZK feature in the spectrum of ultra high energy cosmic rays
• The spectrum features of UHECRs below and surrounding GZK

Cited by in corpus (2)

• Zenith angle distribution of cosmic ray showers measured with the Yakutsk array and its application to analysis of arrival directions in equatorial coordinates
• Measuring temporal characteristics of the Cherenkov radiation signal from extensive air showers of cosmic rays with a wide field-of-view telescope addendum to the Yakutsk array