Super Winds and Radio Emission in X-ray Binary Systems

LEANDRO ABAROA; GUSTAVO E. ROMERO

Revista Mexicana de Astronomía y Astrofísica

Universidad Nacional Autónoma de México

Año: 2024 vol. 56

We have recently proposed that supercritical colliding wind binaries (SCWBs) are suitable scenarios for particleacceleration and nonthermal radiation. In these X-ray binary systems (XRBs), the wind from the companionstar collides with the wind ejected from the super-Eddington accretion disk of the stellar black hole. Strongshocks are generated in this collision, leading to the acceleration of particles and subsequent broadband emissionthrough different nonthermal radiative processes. In particular, we estimate luminosities of the order of L ≈1034 erg s−1in the radio band. One of the major components in these processes is the power provided by thesuper wind expelled from the disk. Furthermore, some properties of the wind photosphere, such as its geometryor its temperature distribution, also contribute to the absorption and reprocessing of the nonthermal radiation.In this work, we perform a more detailed description of the powerful wind launched from the accretion disk, inorder to obtain a better understanding of the above-mentioned processes.