KASCADE-Grande is a new extensive air shower experiment colocated to the KASCADE site at Forschungszentrum Karlsruhe. The multi-detector system allows to investigate the energy spectrum, composition, and anisotropies of cosmic rays with unprecedented precision in the energy range from 10-10 eV. The primary goals besides investigating the origin of the knee at E ≃ 3 · 10 eV, are to verify the ex...

The KASCADE experiment measures the electron and muon number of extensive air showers in the knee region with high precision. From these data shower size spectra for electrons and muons are constructed. An analysis is presented in which electron and muon size spectra in three different zenith angle bins are analysed simultaneously. With a four component assumption for the mass composition of pr...

The lateral distribution of Cerenkov light at ground level records important information on the development of the air shower which produces it. We have constructed a Broad Lateral Non-imaging Cerenkov Array (BLANCA) to measure this lateral distribution at the CASA-MIA air shower detector in Dugway, Utah. Together, the arrays can sample the lateral distributions of electrons, muons, and Cerenko...

Future detection of Extensive Air Showers (EAS) produced by Ultra High Energy Cosmic Particles (UHECP) by means of space based uorescence telescopes will open a new window on the universe and allow cosmic ray and neutrino astronomy at a level that is virtually impossible for ground based detectors. In this paper we summarize the results obtained in the context of the EUSO project by means of a ...

Extensive air showers (EAS) have been known for over 30 years to emit pulses of radio emission at frequencies from a few to a few hundred MHz, an effect that offers great opportunities for the study of EAS with the next generation of “software radio interferometers” such as LOFAR and LOPES. The details of the emission mechanism, however, remain rather uncertain to date. Following past suggestio...

The Muon Tracking Detector in the KASCADE-Grande experiment allows the measurement of muon directions up to 700 m from the shower center. It means, that nearly all muons produced in a shower and surviving to the ground level are subject of investigation. It is important not only for studying mean muon production heights but also for investigations of EAS muon pseudorapidity distributions. These...

Issues relating to extensive air showers observation by a space-borne fluorescence detector and the effects of clouds on the observations are investigated using Monte Carlo simulation. The simulations assume the presence of clouds with varying altitudes and optical depths. Simulated events are reconstructed assuming a cloud-free atmosphere. While it is anticipated that auxiliary instruments, su...

A system of large-area position-sensitive multiwire proportional chambers (MWPC), installed below the hadron calorimeter of the central detector of the KASCADE (KArlsruhe Shower Core and Array DEtector) experiment is able to observe the density distributions of high-energy muons and of the high-energy tails of the hadron spectrum in the core of extensive air showers (EAS). Applying a classi cat...