Recent results from the KASCADE extensive air shower experiment are presented. After briefly reviewing the status of the experiment we report on tests of hadronic interaction models and emphasize the progress being made in understanding the properties and origin of the knee at eV. Analysing the muonand hadron trigger rates in the KASCADE calorimeter as well as the global properties of high ener...

Using a large set of simulated extensive air showers, we investigate universality features of electron and positron distributions in very-highenergy cosmic-ray air showers. Most particle distributions depend only on the depth of the shower maximum and the number of particles in the cascade at this depth. We provide multi-dimensional parameterizations for the electron-positron distributions in t...

In this paper I presented the results obtained for the differential energy spectra of muons at sea level determined as a function of three zenith angles. I calculated the shower size and the number of muons per square meter as a function of the lateral distance from the center of the shower. The data interpretation provide the most significant physical information for understanding the main pro...

Very High Energy (VHE) γ−ray Astronomy observations are planned to be carried out at Pachmarhi in the central Indian state of Madhya Pradesh using the well known atmospheric Čerenkov technique. An array of 25 Čerenkov telescopes is currently under construction. Using this array it is proposed to sample the Čerenkov light pool at various distances from the shower core in order to estimate the la...

A Muon Tracking Detector has been built up in an underground tunnel north of the centre of the KASCADE experiment. It measures muons and their directions in EAS by using Limited Streamer Tubes. For that purpose tracks with hits in 2 and 3 modules are considered, each hit consisting of a signal from a wire pair and from influence strips perpendicular to them. Diagonal strips are used to reduce a...

p a Using a large set of simulated extensive air showers, we investigate universality features of electron and positron distributions in very-highenergy cosmic-ray air showers. Most particle distributions depend only on the depth of the shower maximum and the number of particles in • the cascade at this depth. We provide multi-dimensional parameterizations for the electron-positron distribution...

Aims. The capability of radio antenna arrays to measure cosmic ray air showers with very large zenith angles is explored. This is important, since a possible neutrino detection has to fulfill two requirements. First: antennas should be able to detect very inclined cosmic ray air showers, and second: it should be possible to estimate the distance to the shower maximum, since neutrinos are most l...

Event-by-event measured arrival time distributions of Extensive Air Shower (EAS) muons are affected and distorted by various interrelated effects which originate from the time resolution of the timing detectors, from fluctuations of the reference time and the number (multiplicity) of detected muons spanning the arrival time distribution of the individual EAS events. The origin of these effects ...

The $\lambda$-core vertices of a graph correspond to the non-zero entries some eigenvector $\lambda$ for universal adjacency matrix $\mathbf{U}$ graph. We define partition vertex set $V$ based on and its neighbourhoods at distance $r$, give number results relating structure this partition. For such partitions, we also an entropic measure information content graph, related every distinct eigenva...

For the experimental conditions of the KASCADE-Grande experiment, the density of charged particles of large air showers (EAS) at the distance of about 500 m from the shower core S(500) has been shown by detailed simulation studies to be an approximate energy estimator, being nearly independent of the mass of the primary particle. This report presents some first experimentally observed features ...