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Search for extraterrestrial point sources of neutrinos with AMANDA-II |
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| Authors: | Ahrens J Bai X Barwick S W Becka T Becker J K Bernardini E Bertrand D Binon F Biron A Boersma D J Böser S Botner O Bouchta A Bouhali O Burgess T Carius S Castermans T Chen A Chirkin D Collin B Conrad J Cooley J Cowen D F Davour A De Clercq C DeYoung T Desiati P Dewulf J P Ekström P Feser T Gaisser T K Ganugapati R Gaug M Geenen H Gerhardt L Goldschmidt A Gross A Hallgren A Halzen F Hanson K Hardtke R Harenberg T Hauschildt T Helbing K Hellwig M Herquet P Hill G C Hubert D Hughey B Hulth P O Hultqvist K Hundertmark S Jacobsen J Karle A Kestel M Köpke L Kowalski M Kuehn K Lamoureux J I Leich H |
| Affiliation: | Institute of Physics, University of Mainz, Staudinger Weg 7, D-55099 Mainz, Germany. |
| Abstract: | We present the results of a search for point sources of high-energy neutrinos in the northern hemisphere using AMANDA-II data collected in the year 2000. Included are flux limits on several active-galactic-nuclei blazars, microquasars, magnetars, and other candidate neutrino sources. A search for excesses above a random background of cosmic-ray-induced atmospheric neutrinos and misreconstructed downgoing cosmic-ray muons reveals no statistically significant neutrino point sources. We show that AMANDA-II has achieved the sensitivity required to probe known TeV gamma-ray sources such as the blazar Markarian 501 in its 1997 flaring state at a level where neutrino and gamma-ray fluxes are equal. |
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