2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/117165We show that electromagnetic excitations of rotating black holes can lead to the appearance of narrow singular beams which break up the black hole horizon forming a tube-like region which connects the interior and exterior. It is argued that this effect may be at the origin of jet formation.4 pages, 2 figs. Talk at the Int. Conf. on Gravitation, Cosmology, Astrophysics and Nonstationary Gas Dynamics, dedicated to Prof. K.P. Staniukovich's 90th birthday, Moscow, 2-6 March 2006AstrophysicsGeneral Relativity and Quantum Cosmologytext