Abstract 

We propose a series of two team meetings at ISSI (Bern), aimed at investigating the dependence of the observed properties of (black hole/neutron star) X-ray binary systems on their orbital inclination, and the inflow/outflow coupling in accreting systems. Our main objective is to address the following major questions: which properties of accreting X-ray binaries are inclination-dependent (e.g. related to the jet and inner accretion flow emission)? can we unify any of the observed phenomenology by considering the inclination dependence? what can the inclination-dependence of X-ray absorption lines/radio jet emission tell us about the geometry of the disc winds/the jet Lorentz factors? are these properties constant with time, or do they evolve throughout the different spectral-timing states of an outburst? Answering these fundamental questions requires a multi-wavelength approach as well as the development of improved theoretical models. For this reason, a broad collaboration of scientists is needed to bring together the expertise needed to achieve our objective. The proposed meetings will involve a selected number of geographically-scattered senior scientists, both observers and theoreticians, as well as young scientists who are active in the field.