Hadronic High‐Energy Gamma‐Ray Emission from the Microquasar LS I +61 303

Abstract

We present a hadronic model for gamma-ray production in the microquasarLS I +61 303. The system is formed by a neutron star that accretesmatter from the dense and slow equatorial wind of the Be primary star.We calculate the gamma-ray emission originating from pp interactionsbetween relativistic protons in the jet and cold protons from the wind.After taking into account opacity effects on the gamma rays introducedby the different photon fields, we present high-energy spectralpredictions that can be tested with the new-generation Cerenkovtelescope MAGIC.