High resolution radio imaging of colliding-wind massive binaries using Very Long Baseline Interferometry

Abstract

Using data from the European VLBI Network (EVN), some synchrotron emission has been detected among two Colliding-Wind Binary systems. Those systems are massive binaries in which the stellar winds collide, eventually leading to a particle acceleration. After some data processing, the presence of particle acceleration (translated by the presence of synchrotron emission) has been detected inside those two systems. In addition to this detection, both systems have been imaged through radio maps. Such map has never been obtained previously for one of the two systems while the obtained results are fully consistent with previous results for the second system.