Seminarium Fizyki Wielkich Energii

We will start with brief introductions to Cosmic Rays (CR),extensive air showers and their radio emission. We will explore the originsof the dependence of the air shower development on the primary CR composition and how it affects the radio emission. We will then proceed todescribe in more detail our newest work regarding a strong composition dependence on the measured radio signal amplitudes at ground level. Thissimple, yet historically overlooked dependence can be explained in terms of two competing scalings of the measured electric field that depend on theposition of the shower maximum (Xmax) in the atmosphere. This dependence can be used to directly infer the CR primary composition, even on a non-standard event-by-event basis.