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III - Astrofisica
Aula 32B-3 - Giovedì 20 h 16:30 - 19:00
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High energy neutrino astronomy is a very young field in astrophysics. This new window on the non-thermal Universe was opened in 2013 with the discovery, by IceCube, of a cosmic neutrinos flux from tens of TeV to several PeV. Until then, only the Sun and SN1987A had been observed within the neutrino light providing a new insight of these astrophysical objects and evidences on the peculiar nature of neutrinos themselves. The high energy neutrino discovery opened questions about their origin (galactic, extragalactic) and more specifically to the nature of their sources. The emission features are measured with increasing precision by IceCube and strong constraints are also put by Antares. The next generation of underwater neutrino telescopes will allow complementary observations of the neutrino sky with KM3Net that has a much higher angular resolution and Baikal-GVD both already under construction. Although no clear evidence for a signal from cosmogenic neutrinos has been found, radio technology for the detection of EeV neutrinos is evolving very fast. In spite of the very elusive neutrino nature, the new born astronomy appears very promising and exciting also in view of multimessenger observation. In this lecture the main observations are reported and the most interesting perspectives are outlined.