The Van der Laan extragalactic emission model applied to GRS 1915+105

Abstract

We apply the Van der Laan model to the microquasar GRS 1915+105 and extract parameters that fit the radio emission curves best. We obtain values for the energy spectral index in the range of p ∼ 0:7 - 0:8 for the fit, which largely disagree with the ones predicted by the model, about p ∼ 0:1. This results suggest that to model synchrotron radio emission of X-ray binaries we need to take into account events such as continuous injection and energy losses, as well as a jet-like geometry rather than a spherically symmetric one