Ultra High Energy nu_tau detection at Pierre Auger Observatory
  Earth--skimming UHE tau neutrinos have a chance to be detected by the Fluorescence Detector (FD) of Pierre Auger Observatory if their astrophysical flux is large enough. A detailed evaluation of the expected number of events is here performed for a wide class of neutrino flux models. 
G. Miele, L. Perrone, O. Pisanti