A comparison of the cosmic-ray energy scales of Tunka-133 and KASCADE-Grande via their radio extensions Tunka-Rex and LOPESстатья
Статья опубликована в высокорейтинговом журнале
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Дата последнего поиска статьи во внешних источниках: 11 апреля 2017 г.
Аннотация:The radio technique is a promising method for detection of cosmic-ray air showers of energies around
100 PeV and higher with an array of radio antennas. Since the amplitude of the radio signal can be measured
absolutely and increases with the shower energy, radio measurements can be used to determine
the air-shower energy on an absolute scale. We show that calibrated measurements of radio detectors
operated in coincidence with host experiments measuring air showers based on other techniques can
be used for comparing the energy scales of these host experiments. Using two approaches, first via
direct amplitude measurements, and second via comparison of measurements with air shower simulations,
we compare the energy scales of the air-shower experiments Tunka-133 and KASCADE-Grande,
using their radio extensions, Tunka-Rex and LOPES, respectively. Due to the consistent amplitude calibration
for Tunka-Rex and LOPES achieved by using the same reference source, this comparison reaches
an accuracy of approximately 10% – limited by some shortcomings of LOPES, which was a prototype experiment
for the digital radio technique for air showers. In particular we show that the energy scales of
cosmic-ray measurements by the independently calibrated experiments KASCADE-Grande and Tunka-133
are consistent with each other on this level.