Overview of ANTARES neutrino telescope: Multimessenger results

Multimessenger astrophysics, connecting traditional astronomy with charged cosmic ray, γ-ray, gravitational wave and neutrino observations, has been made possible by the availability of experimental techniques developed, in most cases, for particle physics detectors. ANTARES is a large neutrino telescope located at 2475 m below the Mediterranean Sea level, 40 km offshore from Toulon (France). Data-taking started with the first 5 lines installed in 2007 and the full detector, completed in May 2008, will continue collecting data until 2020. The main objective of the telescope is to search for steady neutrinos sources and neutrinos from transient phenomena. For this reason, the Collaboration is involved in a wide multimessenger program to exploit the connection between neutrinos and other cosmic messengers: electromagnetic radiation from radio and visible to X- and γ-rays; charged cosmic rays; gravitational waves. Among all the possible astrophysical sources, transient sources increase the observation possibilities thanks to the suppression of atmospheric background in a well-defined space-time window. In addition, thanks to the sub-degree angular resolution at high energy, the telescope has the possibility to significantly constrain models on the origin of part of the IceCube cosmic neutrinos in the Southern Sky, or on the blazar provenance of the highest-energy neutrinos. Furthermore, the combination of ANTARES and IceCube data allows to enhance the sensitivity for point-like neutrino sources in the Southern Hemisphere. Finally, ANTARES can also search for neutrinos produced by the annihilation of Dark Matter particles. The recent ANTARES results are summarized in the following.