The Tunka Radio Extension (Tunka-Rex): Status and First Results (ICRC 2013)
F. G. Schr\"oder, N. M. Budnev, O. A. Gress, A. Haungs, R. Hiller, T., Huege, Y. Kazarina, M. Kleifges, A. Konstantinov, E. N. Konstantinov, E. E., Korosteleva, D. Kostunin, O. Kr\"omer, L. A. Kuzmichev, R. R. Mirgazov, L., Pankov, V. V. Prosin, G. I. Rubtsov, C. R\"uhle

TL;DR
Tunka-Rex is a newly operational radio antenna array in Siberia that measures high-energy air showers and aims to calibrate radio detection methods against air-Cherenkov measurements for improved cosmic ray analysis.
Contribution
It is the first hybrid setup combining radio and air-Cherenkov measurements for the same air-shower events, enabling cross-calibration and enhanced precision.
Findings
Tunka-Rex detects radio emissions from air showers.
The array is sensitive to the energy of air showers.
First results show successful measurement of radio signals.
Abstract
Tunka-Rex is a new radio antenna array which extends the Tunka experiment in Siberia close to lake Baikal. It consists of 20 antennas on an area of 1 km^2 which measure the radio emission of high-energy air showers. Tunka-Rex is triggered by the photomultiplier array of Tunka measuring air-Cherenkov light of air showers in the energy range from about 10 PeV to 1 EeV. This configuration allows for the worldwide first hybrid measurements of the radio and air-Cherenkov signal for the same events: an ideal situation to perform a cross-calibration between both methods. Consequently, the main goal of Tunka-Rex is to determine the achievable energy and Xmax precision of radio measurements by comparing them to the reconstruction of the air-Cherenkov measurements. Tunka-Rex started operation in autumn 2012, and already detected air-shower events. In this paper we present the status of Tunka-Rex…
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Taxonomy
TopicsAstrophysics and Cosmic Phenomena · Radio Astronomy Observations and Technology · Radio Wave Propagation Studies
