EPJ Web of Conferences (Jan 2019)

First analysis of inclined air showers detected by Tunka-Rex

  • Marshalkina T.,
  • Bezyazeekov P.A.,
  • Budnev N.M.,
  • Chernykh D.,
  • Fedorov O.,
  • Gress O.A.,
  • Haungs A.,
  • Hiller R.,
  • Huege T.,
  • Kazarina Y.,
  • Kleifges M.,
  • Kostunin D.,
  • Korosteleva E.E.,
  • Kuzmichev L.A.,
  • Lenok V.,
  • Lubsandorzhiev N.,
  • Mirgazov R.R.,
  • Monkhoev R.,
  • Osipova E.,
  • Pakhorukov A.,
  • Pankov L.,
  • Prosin V.V.,
  • Schröder F.G.,
  • Shipilov D.,
  • Zagorodnikov A.

DOI
https://doi.org/10.1051/epjconf/201921602012
Journal volume & issue
Vol. 216
p. 02012

Abstract

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The Tunka Radio Extension (Tunka-Rex) is a digital antenna array for the detection of radio emission from cosmic-ray air showers in the frequency band of 30 to 80 MHz and for primary energies above 100 PeV. The standard analysis of Tunka-Rex includes events with zenith angle of up to 50?. This cut is determined by the efficiency of the external trigger. However, due to the air-shower footprint increasing with zenith angle and due to the more efficient generation of radio emission (the magnetic field in the Tunka valley is almost vertical), there are a number of ultra-high-energy inclined events detected by Tunka-Rex. In this work we present a first analysis of a subset of inclined events detected by Tunka-Rex. We estimate the energies of the selected events and test the efficiency of Tunka-Rex antennas for detection of inclined air showers.