Abstract
Problems in observation of extensive air showers generated by neutrinos are connected with an extremely small cross section of inelastic collisions of neutrinos with nuclei. However, two facts allow to search for showers generated by neutrinos: (1) a hadron cascade with the primary energy of more than 10 13 eV leaves a mountain ridge to the atmosphere from the depth 300 g/cm 2 without an essential loss of the total energy in the hadron cascade, and (2) air Cherenkov radiation from such hadron cascades will be observed with a 7.5 km distant telescope over an area of more than 7 ×10 5 m 2 . This partially compensates the small cross section of inelastic neutrino collisions. The observation has been carried out since 1992 at high mountainous Tien-Shan station with SHALON Cherenkov mirror telescope with ∼11.2 m 2 mirror area and image matrix of 144 PMT with full angle >8°. The telescope characteristics permitted to start the search of local neutrino sources with energy 10 13 –10 16 eV on EAS generating in mou...
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