Point Source Searches Using High-Energy Down-going Neutrinos With the ANTARES Telescope

Point source searches with the ANTARES neutrino telescopes usually examine up-going neutrinos, restricting the search on the Southern hemisphere. This is done in order to reject the atmospheric muon background which is down-going. This report examines the sensitivity of ANTARES to point sources using down-going neutrinos. For that, down-going cosmic neutrinos and atmospheric muons were simulated. Their signature on the detector was examined and discriminating methods were used in order to reject the background. Finally, limits have been set in the expected flux. The limit set is less than an order of magnitude higher from the limit set for up-going neutrinos in the common area.