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Supercritical Colliding Wind Binaries by Abaroa, L.; Romero, G. E.; Sotomayor, P. is a scholarly article available to read on EtoBox.

What is Supercritical Colliding Wind Binaries about?

Context. Particle-accelerating colliding-wind binaries (PACWBs) are systems that are formed by two massive and hot stars and produce nonthermal (NT) radiation. The key elements of these systems are fast winds and the shocks that they create when they collide. Binaries with nonaccreting young pulsars have also been detected as NT emitters, again as a consequence of the wind-wind interaction. Black holes (BHs) might produce NT radiation by this mechanism if they accrete at super-Eddington rates. In such cases, the disk is expected to launch a radiation-driven wind, and if this wind has an equatorial component, it can collide with the companion star yielding a PACWB. These systems are supercritical colliding wind binaries (SCWBs). Aims. We aim to characterize the particle acceleration and NT radiation produced by the collision of winds in binary systems composed of a superaccreting BH and an early-type star. Methods. We estimated the terminal velocity of the disk-driven wind by calculating the spatial distribution of the radiation fields and their effect on disk particles. We then found the location of the wind collision region and calculated the timescales of energy gain and losses o

Author

Abaroa, L.; Romero, G. E.; Sotomayor, P.

Published

2023

Language

EN