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 1km2 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 1016 eV to 1018 eV. This configuration allows ...

The topic of this report pertains to the detection and analysis of γ-rays emitted from the galactic center (GC) using the Very Energetic Radiation Imaging Telescope Array System (VERITAS), a Cherenkov array system. The specific cause of γ-ray production around this region is speculated to be Dark Matter (DM). DM is an extension of the current standard model. The evidence for DM is so plentiful,...

VERITAS is a new major ground-based gamma-ray observatory with an array of seven 10m optical reflectors to be built at the Whipple Observatory in southern Arizona, USA. It will consist of an array of imaging Cherenkov telescopes designed to conduct critical measurements of AGNs and SNRs in the energy range of 50 GeV 50 TeV. The design of the array has been optimized for the highest sensitivity ...

The scientific discoveries made by H.E.S.S. during its first year of operation encourage a reexamination of the open problems in high energy astrophysics and of the capabilities of the atmospheric Cherenkov technique, which could be employed to address them. We report on an initial Monte Carlo exploration of a ground-based instrument for observing cosmologically distant high energy transient ph...

The paper presents Monte Carlo simulations carried out during the preparatory phase of the Cherenkov Telescope Array project. The aim of the project is to build the next generation observatory of very high energy gamma rays. During the preparatory phase there is a need to optimize and verify design concepts for various elements of the array. In this paper we describe the main components of the ...