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T: Fachverband Teilchenphysik

T 20: Neutrinophysik (Theorie)

T 20.7: Vortrag

Dienstag, 5. März 2013, 18:15–18:30, WIL-B122

High energy proton proton interactions in AGN and the resulting neutrino fluxes — •Isaac Saba¹, Julia Tjus², and Francis Halzen³ — ¹Ruhr-Universität Bochum, Fakultät für Physik & Astronomie, Theoretische Physik I, D-44780 Bochum, Germany — ²Ruhr-Universität Bochum, Fakultät für Physik & Astronomie, Theoretische Physik I, D-44780 Bochum, Germany — ³Department of Physics, University of Wisconsin, Madison, WI-53706, USA

The cosmic ray (CR) flux beyond the knee (E>10¹⁵ eV) is believed to be extragalactic origin. Active galactic nuclei (AGN) are considered to satisfy physical conditions, i.e. large magnetic fields and high luminosities, to accelerate particles to the observed energies. Particles are assumed to be accelerated near to the accretion disk and in the plasma jets, produced due to conservation of angular momentum, to the highest energies, where they interact with each other and produce pions, which-decay among others-in neutrinos. The high energy neutrinos leave their origin, without any significant interaction with matter. In this talk we present our results for the target densities n_H for inelastic proton-proton interactions and focus on 32 FRI galaxies with given radio luminosities. For Centaurus A (Cen A) and Messier 87 (M87) we use Fermi observations to calculate the γ−flux, the neutrino flux and the resulting target density. The detection of these neutrinos will help to find information about acceleration processes in the source.