The Tunka Radio Extension (Tunka-Rex) is an array of 25 radio antenna stations at the Tunka-133 experiment, covering an area of approximately 1 km². While Tunka-133 measures the Cherenkov light of air showers in the energy range up to 1 EeV, Tunka-Rex measures the radio emission of the same air showers. Tunka-Rex started operation on 8 October 2012. Thus, Tunka is currently the world-wide unique place for performing Chrenkov-Radio hybrid measurements of ultra-high energy cosmic rays.
- Written by Tim Huege