M. Ludwig

Simulating radio emission from air showers with CoREAS

CoREAS is a Monte Carlo code for the simulation of radio emission from extensive air showers. It implements the endpoint formalism for the calculation of electromagnetic radiation directly in CORSIKA. As such, it is parameter-free, makes no assumptions on the emission mechanism for the radio signals, and takes into account the complete complexity of the electron and positron distributions as simulated by CORSIKA. In this article, we illustrate the capabilities of CoREAS with simulations carried out in different frequency ranges from tens of MHz up to GHz frequencies, and describe in particular the emission characteristics at high frequencies due to Cherenkov effects arising from the varying refractive index of the atmosphere.

Ankle-like feature in the energy spectrum of light elements of cosmic rays observed with KASCADE-Grande

Recent results of the KASCADE-Grande experiment provided evidence for a mild knee-like structure in the all-particle spectrum of cosmic rays at

REAS3: Monte Carlo simulations of radio emission from cosmic ray air showers using an 'end-point' formalism

E = 10^{16.92 \pm 0.10} \, \mathrm{eV}

The wavefront of the radio signal emitted by cosmic ray air showers

, which was found to be due to a steepening in the flux of heavy primary particles. The spectrum of the combined components of light and intermediate masses was found to be compatible with a single power law in the energy range from

On noise treatment in radio measurements of cosmic ray air showers

10^{16.3} \, \mathrm{eV}

Comparing LOPES measurements of air-shower radio emission with REAS 3.11 and CoREAS simulations

to

Thunderstorm observations by air-shower radio antenna arrays

10^{18} \, \mathrm{eV}

A comparison of the cosmic-ray energy scales of Tunka-133 and KASCADE-Grande via their radio extensions Tunka-Rex and LOPES

. In this paper, we present an update of this analysis by using data with increased statistics, originating both from a larger data set including more recent measurements and by using a larger fiducial area. In addition, optimized selection criteria for enhancing light primaries are applied. We find a spectral feature for light elements, namely a hardening at

Cosmic ray measurements with LOPES: Status and recent results

E = 10^{17.08 \pm 0.08} \, \mathrm{eV}

LOPES-3D: An antenna array for full signal detection of air-shower radio emission

with a change of the power law index from