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T: Fachverband Teilchenphysik

T 101: Kosmische Strahlung IV

T 101.6: Talk

Wednesday, March 30, 2011, 18:00–18:15, 30.41: 004

Propagation of UHE-nuclei with CRPropa^*. — •Nils Nierstenhoefer¹, Karl Heinz Kampert¹, Jörg Konrad Kulbartz², and Günter Sigl² — ¹Universität Wuppertal — ²Universität Hamburg

CRPropa 1.4 is a publicly available tool to study the propagation of ultra high energy nucleons in extra galactic environments. It considers reactions with low energy photon fields and the influence of deflections in extra galactic magnetic fields. But, current experimental data indicate that heavy nuclei may contribute to the flux of ultra-high energy cosmic rays. Thus, to understand the effects of their propagation on the observed spectrum and mass composition, CRPropa 1.4 has been extended to allow for the propagation of nuclei. It takes into account photo disintigration and pion production in ambient photon fields, as well as the decay of unstable nuclei created in these reactions. Additionally, pair production is taken into account as an countinious energy loss. A beta version of CRPropa 2.0 was released in the beginning of 2011. In this talk, we will present the nuclei extensions of CRPropa 2.0 and discuss first simulation results.

^* Supported by BMBF-Verbundforschung Astroteilchenphysik.