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

• Main Authors: Knurenko, S. P., Egorova, V. P., Glushkov, A. V., Ivanov, A. A., Krasilnikov, A. D., Makarov, I. T., Mikhailov, A. A., Olzoyev, V. V., Pravdin, M. I., Sabourov, A. V., Sleptsov, I. Ye., Struchkov, G. G.
• Format: Text
• Language: unknown
• Published: arXiv 2004
• Subjects: Astrophysics astro-ph; FOS Physical sciences; Yakutsk
• Online Access: https://dx.doi.org/10.48550/arxiv.astro-ph/0411484; https://arxiv.org/abs/astro-ph/0411484

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. : XIII 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)