activity
20042009
most citedAn upper limit to the photon fraction in cosmic rays above 10^19 eV from the Pierre Auger Observatory

121 citations · 534 across the 18 of their papers we have counts for

collaborators

18 papers

astro-ph.HE2009★ 5 cited

A new method to measure the attenuation of hadrons in extensive air showers

W. D. Apel

Extensive air showers are generated through interactions of high-energy cosmic rays impinging the Earth's atmosphere. A new method is described to infer the attenuation of hadrons…

astro-ph.HE2009★ 26 cited

Test of the hadronic interaction model EPOS with air shower data

Grande Collaboration, W. D. Apel

Predictions of the hadronic interaction model EPOS~1.61 as implemented in the air shower simulation program CORSIKA are compared to observations with the KASCADE experiment. The in…

astro-ph2008★ 93 cited

Energy Spectra of Elemental Groups of Cosmic Rays: Update on the KASCADE Unfolding Analysis

KASCADE Collaboration, W. D. Apel

The KASCADE experiment measures extensive air showers induced by cosmic rays in the energy range around the so-called knee. The data of KASCADE have been used in a composition anal…

astro-ph2008★ 11 cited

Air Shower Measurements with the LOPES Radio Antenna Array

A. Haungs

LOPES is set up at the location of the KASCADE-Grande extensive air shower experiment in Karlsruhe, Germany and aims to measure and investigate radio pulses from Extensive Air Show…

astro-ph2008★ 32 cited

Frequency spectra of cosmic ray air shower radio emission measured with LOPES

A. Nigl

AIMS: We wish to study the spectral dependence of the radio emission from cosmic-ray air showers around 100 PeV (1017 eV). METHODS: We observe short radio pulses in a broad frequen…

astro-ph2008★ 25 cited

Direction identification in radio images of cosmic-ray air showers detected with LOPES and KASCADE

A. Nigl

AIMS: We want to understand the emission mechanism of radio emission from air showers to determine the origin of high-energy cosmic rays. Therefore, we study the geometry of the ai…