Supercritical colliding wind binaries

Context. Particle-accelerating colliding-wind binaries (PACWBs) are systems that formed by two massive and hot stars produce nonthermal radiation. The key elements of these fast winds the shocks they create when collide. Binaries with nonaccreting young pulsars have also been detected as emitters, again a consequence wind–wind interaction. Black holes might radiation this mechanism if accrete at super-Eddington rates. In such cases, disk is expected to launch radiation-driven wind, wind has an equatorial component, it can collide companion star yielding PACWB. These supercritical colliding binaries. Aims. We aim characterize particle acceleration produced collision in binary composed superaccreting black hole early-type star. Methods. estimated terminal velocity disk-driven calculating spatial distribution fields their effect on particles. then found location region calculated timescales energy gain losses relativistic particles undergoing diffusive acceleration. With information, we were able compute associated spectral number specific models different parameters explore scenario. Results. find interaction emission from radio up tens GeV, luminosities range ∼10 33 –10 35 erg s −1 , which for most part contributed electron synchrotron inverse Compton Conclusions. conclude binaries, some ultraluminous X-ray sources Galactic capable accelerating cosmic rays producing electromagnetic γ -rays, addition thermal components.