PoS - Proceedings of Science
Volume 301 - 35th International Cosmic Ray Conference (ICRC2017) - Session Cosmic-Ray Indirect. CRI-properties of CRs at high energies (anisotropy, energy, mass)
Energy Spectrum of Ultra-High-Energy Cosmic Rays Measured by The Telescope Array
Y. Tsunesada*, T. AbuZayyad, D. Ivanov, G. Thomson, T. Fujii and D. Ikeda
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Pre-published on: August 16, 2017
Published on: August 03, 2018
The Telescope Array (TA) is a hybrid cosmic ray detector using air fluorescence detectors (FDs) and an array of surface detectors (SDs) which covers $700 \, {\rm km^2}$ in Utah. The TA Low-energy Extension (TALE) also consists of FDs with larger elevation angles and an infill SD array with 400 m spacing, which extends the observable energy range down to 4 PeV. In this contribution we present the spectrum from the TA SD, which has the largest statistics, the FD monocular spectrum, the FD-SD hybrid spectrum, and the lower energy spectrum obtained by TALE. We discuss the declination dependence of the energy spectrum in the northern sky.
DOI: https://doi.org/10.22323/1.301.0535
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