The non-thermal emission from the colliding-wind binary Apep

The recently discovered massive binary system Apep is the most powerful synchrotron emitter among known Galactic colliding-wind binaries. This makes this particular of great interest to investigate stellar winds and non-thermal processes associated with their shocks. source was detected at various radio bands, in addition wind-collision region resolved by means very-long baseline interferometric observations. We use a emission model for binaries derive physical properties system. observed morphology maps allows us estimate projection angle on sky be $\psi \approx 85^\circ$. flux densities also allow characterise both intrinsic spectrum its modifications due free--free absorption low frequencies; from we mass-loss rates stars $\dot{M}_\mathrm{WN} 4\times10^{-5}$ $\mathrm{M}_\odot$ yr$^{-1}$ $\dot{M}_\mathrm{WC} 2.9\times10^{-5}$ yr$^{-1}$. Finally, broadband spectral energy distribution calculated different combinations remaining free parameters, namely intensity magnetic field injected power particles. show that degeneracy these two parameters can solved observations high-energy domain, likely hard X-rays but possibly $\gamma$-rays under favourable conditions.