THE COSMIC-RAY ENERGY SPECTRUM OBSERVED WITH THE SURFACE DETECTOR OF THE TELESCOPE ARRAY EXPERIMENT

By T. Abu-Zayyad, R. Aida, M. Allen, R. Anderson, R. Azuma, E. Barcikowski, J. Belz, D. Bergman, S. Blake, R. Cady and 130 more. 2012

277 citations recorded by the source corpus.

The Telescope Array (TA) collaboration has measured the energy spectrum of ultra-high energy cosmic rays (UHECRs) with primary energies above 1.6 × 1018 eV. This measurement is based upon four years of observation by the surface detector component of TA. The spectrum shows a dip at an energy of 4.6 × 1018 eV and a steepening at 5.4 × 1019 eV which is consistent with the expectation from the GZK cutoff. We present the results of a technique, new to the analysis of UHECR surface detector data, that involves generating a complete simulation of UHECRs striking the TA surface detector. The procedure starts with shower simulations using the CORSIKA Monte Carlo program where we have solved the problems caused by use of the “thinning” approximation. This simulation method allows us to make an accurate calculation of the acceptance of the detector for the energies concerned.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/32192d86d7ab566b1a83bd93e665d8893c29d807

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Nuclear and High Energy Physics

1. J. Rachen
2. U. Utah
3. U. Tokyo
4. A. V. Vliet
5. O. Kalashev
6. D. Physics
7. S. Buitink
8. Heino Falcke

Citations in the corpus

• Cosmic-ray energy spectrum and composition up to the ankle - the case for a second Galactic component (2016, background): “At high energies, that is above ⇠106 GeV, ground-based experiments such as KASCADE-Grande (Apel et al. 2013), the Tibet III array (Amenomori et al. 2008), IceTop (Aartsen et al. 2013), the Pierre Auger Observatory (Ghia et al. 2015) and the Telescope Array (Abu-Zayyad et al. 2013) have carried out d”
• INDICATIONS OF INTERMEDIATE-SCALE ANISOTROPY OF COSMIC RAYS WITH ENERGY GREATER THAN 57 EeV IN THE NORTHERN SKY MEASURED WITH THE SURFACE DETECTOR OF THE TELESCOPE ARRAY EXPERIMENT (2014, methodology): “This suppression was independently confirmed by both the Pierre Auger Observatory (PAO) (Abraham et al. 2008) in the south and Telescope Array (TA) experiment (Abu-Zayyad et al. 2013a) in the north, which are the largest aperture cosmic-ray detectors currently in operation.”
• Depth of Ultra High Energy Cosmic Ray Induced Air Shower Maxima Measured by the Telescope Array Black Rock and Long Ridge FADC Fluorescence Detectors and Surface Array in Hybrid Mode (2018, methodology): “Level 2 triggers are events in which three or more adjacent SD counters individually within 2400 m of each other, detect a three minimum ionizing particle (MIP) signal within 8 µs (Abu-Zayyad et al. 2013c).”
• IceCube-Gen2: the window to the extreme Universe (2020, unknown): “Figure 16: The high-energy astrophysical neutrino spectrum, compared to the extragalactic γ-ray spectrum measured by Fermi-LAT [32] and the highest energy CR spectrum measured by the Telescope Array [189] and the Pierre Auger Observatory [190].”