Search for point sources of high energy neutrinos with final data from AMANDA-II

We present a search for point sources of high energy neutrinos using 3.8 yr of data recorded by AMANDA-II during 2000--2006. After reconstructing muon tracks and applying selection criteria designed to optimally retain neutrino-induced events originating in the northern sky, we arrive at a sample of 6595 candidate events, predominantly from atmospheric neutrinos with primary energy 100 GeV to 8 TeV. Our search of this sample reveals no indications of a neutrino point source. We place the most stringent limits to date on E^-2 neutrino fluxes from points in the northern sky, with an average upper limit of ${E}²{{Φ}}_{{{ν}}_{{μ}}+{{ν}}_{{τ}}}{≤}5.2×{}{10}^{{-}11} TeV {cm}^{{-}2} {s}^{{-}1}$ on the sum of ${{ν}}_{{μ}}$ and ${{ν}}_{{τ}}$ fluxes, assumed equal, over the energy range from 1.9 TeV to 2.5 PeV.