  As direct and indirect dark matter detection experiments continue to place
stringent constraints on WIMP masses and couplings, it becomes imperative to
expand the scope of the search for particle dark matter by looking in new and
exotic places. One such place may be the core of active galactic nuclei where
the density of dark matter is expected to be extremely high. Recently, several
groups have explored the possibility of observing signals of dark matter from
its interactions with the high-energy jets emanating from these galaxies. In
this work, we build upon these analyses by including the other components of
the WIMP-induced gamma ray spectrum of active galactic nuclei; namely, (1) the
continuum from WIMP annihilation into light standard model states which
subsequently radiate and/or decay into photons and (2) the direct
(loop-induced) decay into photons. We work in the context of models of
universal extra dimensions (in particular, a model with two extra dimensions)
and compute all three components of the gamma ray spectrum and compare with
current data. We find that the model with two extra dimensions exhibits several
interesting features which may be observable with the Fermi gamma ray
telescope. We also show that, in conjunction with other measurements, the gamma
ray spectrum from AGN can be an invaluable tool for restricting WIMP parameter
space.
