2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/147706We demonstrate that charged null particles can be infinitely blue\-shifted in a Kerr-Newman spacetime. The surface of infinite blueshift can be outside of the ergosphere in a Kerr-Newman spacetime, and outside of the outer event horizon for a Reissner-Nordstrom spacetime. Implications for extensions of the standard model which incorporate charged neutrinos are discussed.3 pages, latex, no figures, some clarifying remarks added and typos correctedGeneral Relativity and Quantum CosmologyHigh Energy Physics - Phenomenologytext