PoS - Proceedings of Science
Volume 358 - 36th International Cosmic Ray Conference (ICRC2019) - CRI - Cosmic Ray Indirect
Implications of the cosmic ray spectrum from the second knee to the ankle region observed by the TA and TALE experiment for the cosmic ray proton sources
E. Kido* On behalf of the Telescope Array collaboration
*corresponding author
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Pre-published on: July 22, 2019
Published on:
Abstract
The Telescope Array and the Telescope Array Low Energy Extension experiment provides energy spectra of cosmic rays with energies above $10^{15.3}$ eV using the same energy calibration techniques of fluorescence detectors. The calibration techniques enable the wide range of energy spectra to be combined with small systematic uncertainty. The energy spectra from below the second knee to the ankle are fitted with cosmic ray protons from a simple phenomenological extragalactic source model and with some galactic cosmic ray models. The energy spectra can be successfully fitted with some galactic cosmic ray models which show steep break at the second knee.
DOI: https://doi.org/10.22323/1.358.0313
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