High-energy neutrino searches in the Mediterranean Sea: The ANTARES results

Theantares Collaboration is operating the first neutrino telescope (NT) ever built in the deep sea. The detector was gradually deployed between 2006 and 2008 and is, as of today, the largest NT in the Northern Hemisphere. It is anchored 2475m below the surface of the Mediterranean Sea and 40km offshore from Toulon (France). The detector is contributing significantly in the new endeavor of multimessenger astrophysics thanks to its excellent angular resolution in both the νμ channel and the cascade channel (induced by all neutrino flavours). The Southern sky (in particular central regions of our Galaxy) is studied searching for extended regions of emission as well as for point-like objects. By adopting a multimessenger approach, based on time and/or space coincidences with other cosmic probes, the sensitivity can be considerably augmented. antares provides also various constraints on Dark Matter through indirect searches for WIMP annihilation, with limits that are the most restrictive in some WIMP mass intervals