  In this article, we study the effects of the pair creation in the
vortex-driven magnetic field on the radiation pattern of giant black holes. In
particular, for a sufficiently wide spectrum of supermassive black holes, we
studied what energy photons will decay under the influence of a strong magnetic
field, producing electron-positron pairs. Depending on particular physical
parameters, it has been shown that in certain scenarios high or very high
energy emission generated by black holes will be strongly suppressed, thus,
will be unable to escape a zone where radiation is generated.
