2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/186469We show that the vorticity appearing in stationary vacuum spacetimes is always related to the existence of a flow of super-energy on the plane orthogonal to the vorticity vector. This result, toghether with the previously established link between vorticity and super--energy in radiative (Bondi-Sachs) spacetimes strength further the case for this latter quantity as the cause of frame dragging.12 pages Latex. To appear in Phys.Rev. D. Typos correctedGeneral Relativity and Quantum CosmologyMathematical Physicstext