A model for jets of low mass microquasars

Abstract

In this work we present a new jet model for the non-thermal broadband emission of low-mass microquasars. We calculate the contribution of relativistic particles, primary electrons and protons aswell as secondary muons, charged pions and electron-positron pairs, to the electromagnetic spectrumof the sources. The distribution in energy of all particle species is obtained for an extended,inhomogeneous region. We include detailed analysis of particle energy losses, injection, decayand escape from the acceleration zone. We also calculate absorption effects due to photon-photonannihilation. As an application, we consider the case of XTE J1118+480, a well-known low-massX-ray binary in the galactic halo, and we present predictions about its high-energy radiation.