Search for point-like neutrino sources above the horizon with the ANTARES Neutrino Telescope

Installed in the Mediterranean Sea, at a depth of - 2:5 km, ANTARES is the largest undersea neutrino telescope currently operating. The search for point-like sources with neutrino telescopes is normally limited to a fraction of the sky, due to the selection of events where the direction of the neutrino candidate has been reconstructed as coming from below the horizon, usually referred to as 'up-going' events, in order to significantly reduce the atmospheric muons background. Here we demonstrate that the background can be effectively suppressed through an energy and direction dependent event selection so that a part of the region above the horizon can be included in the search. The strategy for the study of a 'down-going' neutrino flux is described and the ANTARES sensitivity for two candidate sources is presented.