Hamburg 2016 – scientific programme

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T: Fachverband Teilchenphysik

T 20: Kosmische Strahlung I

T 20.3: Talk

Monday, February 29, 2016, 11:30–11:45, VMP9 SR 29

Features of the galactic magnetic field regarding deflections of ultra-high-energy cosmic rays — •Marcus Wirtz, Martin Erdmann, Gero Müller, and Martin Urban — III. Physikalisches Institut A, RWTH Aachen University, Deutschland

Most recent models of the galatic magnetic field have been derived from Faraday rotation measurements and imply strong deflections even for ultra-high energy cosmic rays. We investigate the characteristics of the different field parametrizations and point out similarities and interesting features. Among them are extragalactic regions which are invisible for an Earth bound observation and the transition from diffuse to ballistic behaviour in the 1 EeV energy regime. Applying this knowledge to a directional analysis, there are indications for deflection patterns by the galactic magnetic field in cosmic ray arrival directions measured by the Pierre Auger Observatory.