2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/2029We present a self-similar, steady-state model describing both a magnetized accretion disc and a magnetohydrodynamic jet. We focus on the role of a hot corona in such a structure. This corona enables the disc to launch various types of jets. By considering the energy conservation, we also present a diagnostic of the luminosity of the magnetized disc, which could explain some observational signatures of galactic objects.4 pages, to be published in the proceeding of the Third Microquasar Workshop, eds A.Castro-Tirado, J. Greiner and J. ParedesAstrophysicstext