  Previous work on the neutrino spectra from high energy sources has not
included the tau neutrinos directly produced by the decays in the source. Here
we consider the tau neutrino component and discuss how its inclusion modifies
the expected neutrino spectra. We discuss implications for interpreting any
observed tau neutrino component in TeV - UHE events as evidence of nu_mu -->
nu_tau oscillations.

High Energy Physics - Phenomenology;Astrophysics