Volume 301 - 35th International Cosmic Ray Conference (ICRC2017) - Session Cosmic-Ray Indirect. CRI-properties of CRs at high energies (anisotropy, energy, mass)
Interpretation of the energy spectrum observed with the Telescope Array detectors
E. Kido* and  On behalf of the Telescope Array collaboration
*: corresponding author
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Pre-published on: August 16, 2017
Published on: August 03, 2018
Abstract
The energy spectrum of cosmic rays above 1018.2 eV is analyzed using Telescope Array (TA) surface detectors (SDs). The energy spectrum of cosmic rays above 1017.2 eV is analyzed using TA fluorescence detector (TAFD) monocular mode. In this paper, the break point of the energy spectrum at around 1018.7 eV which is known as ``ankle'' region is discussed using the data. We explored the possibility that cosmic ray protons from extra galactic sources can explain the feature of the spectrum shape in the ankle region. Magnetic fields in intergalactic space are also considered to discuss especially the low energy part of the data.
DOI: https://doi.org/10.22323/1.301.0510
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