Würzburg 2018 – wissenschaftliches Programm
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T: Fachverband Teilchenphysik
T 29: Kosmische Strahlung II
T 29.7: Vortrag
Dienstag, 20. März 2018, 18:05–18:20, Philo-HS6
Cosmic ray radio emission: towards a fast forward model — •David Butler1, Tim Huege1, and Olaf Scholten2 — 1Karlsruher Institut für Technologie - Institut für Kernphysik — 2University of Groningen - Center for Advanced Radiation Technology
In the analysis of radio signals from cosmic ray air showers we often rely on the simple model of a point source located at the shower maximum. On the other hand we have Monte Carlo simulations of the particle physics which represent our most accurate models of cosmic ray air showers, but the high computation demands of high-energy cascades make them impractical for bulk application and more involved statistical analysis techniques.
We aim to unravel the key parameters which determine the radio signal at arbitrary antenna positions. To this end we slice the Monte Carlo single-particle contributions by region of origin and study the influence of e.g. cascade development, local parameters like the ambient density and also propagation effects along the line of sight. Some dependencies will be simple to model, allowing us to focus on the remaining components.
This approach should culminate in a fast semi-analytical forward model which preserves the accuracy of a full Monte Carlo cascade within inherent fluctuations.