PoS - Proceedings of Science
Volume 423 - 27th European Cosmic Ray Symposium (ECRS) - Invited highlights
Cosmic ray energy spectrum measurements by Pierre Auger Observatory and Telescope Array
K. Fujita
Full text: pdf
Pre-published on: February 15, 2023
Published on: December 14, 2023
The measurement of the energy spectrum of cosmic rays is of crucial importance to reveal their origin, propagation, and acceleration mechanisms. The Pierre Auger Observatory in Argentina and the Telescope Array (TA) in the US continue to observe cosmic rays by a hybrid detector, which is composed of Fluorescence Detectors (FD) and Surface Detector (SD) array, in the southern and northern hemispheres respectively. Especially in recent measurements, they successfully measure the cosmic ray spectrum with energies below 10$^{16}$ eV by observing events in which the signals from air showers are dominated by Cherenkov light by high elevation fluorescence telescopes. This contribution reviews the recent measurements by both collaborations, particularly the Cherenkov-based measurements.
DOI: https://doi.org/10.22323/1.423.0022
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