Ultra High Energy Neutrino Astronomy

With Baikal and AMANDA detectors UHE neutrino astronomy entered its first stage, which will reach the decisive level with 1 km detector. Simultaneously, the first steps are made in building the detectors searching for superGZK neutrinos, i.e. those with energies above the GZK cutoff, EGZK ∼ 5 × 10 19 eV. Radio-telescopes, such as RICE, GLUE and FORTE are already searching for radio signal from neutrino-induced showers in ice and in the moon. Atmospheric neutrino-induced showers can be observed from the space as it is proposed in the EUSO project. Neutrino-induced horizontal atmospheric showers can be observed by the Auger array, which is now in the data-collecting phase.