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Extending the Search for Neutrino Point Sources with IceCube above the Horizon
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2009 (English)In: Physical Review Letters, ISSN 0031-9007, E-ISSN 1079-7114, Vol. 103, 221102Article in journal (Refereed) Published
Abstract [en]

Point source searches with the IceCube neutrino telescope have been restricted to one hemisphere, due to the exclusive selection of upward going events as a way of rejecting the atmospheric muon background. We show that the region above the horizon can be included by suppressing the background through energy-sensitive cuts. This improves the sensitivity above PeV energies, previously not accessible for declinations of more than a few degrees below the horizon due to the absorption of neutrinos in Earth. We present results based on data collected with 22 strings of IceCube, extending its field of view and energy reach for point source searches. No significant excess above the atmospheric background is observed in a sky scan and in tests of source candidates. Upper limits are reported, which for the first time cover point sources in the southern sky up to EeV energies.

Place, publisher, year, edition, pages
2009. Vol. 103, 221102
Keyword [en]
gamma-rays telescope detector jets Physics
Research subject
SWEDARP, IceCube
Identifiers
URN: urn:nbn:se:polar:diva-1996DOI: 10.1103/PhysRevLett.103.221102OAI: oai:DiVA.org:polar-1996DiVA: diva2:814825
Note

ISI Document Delivery No.: 524ZD Times Cited: 24 Cited Reference Count: 25 Abbasi, R. Abdou, Y. Abu-Zayyad, T. Adams, J. Aguilar, J. A. Ahlers, M. Andeen, K. Auffenberg, J. Bai, X. Baker, M. Barwick, S. W. Bay, R. Alba, J. L. Bazo Beattie, K. Beatty, J. J. Bechet, S. Becker, J. K. Becker, K. -H. Benabderrahmane, M. L. Berdermann, J. Berghaus, P. Berley, D. Bernardini, E. Bertrand, D. Besson, D. Z. Bissok, M. Blaufuss, E. Boersma, D. J. Bohm, C. Botner, O. Bradley, L. Braun, J. Breder, D. Carson, M. Castermans, T. Chirkin, D. Christy, B. Clem, J. Cohen, S. Cowen, D. F. D'Agostino, M. V. Danninger, M. Day, C. T. De Clercq, C. Demirors, L. Depaepe, O. Descamps, F. Desiati, P. de Vries-Uiterweerd, G. DeYoung, T. Diaz-Velez, J. C. Dreyer, J. Dumm, J. P. Duvoort, M. R. Edwards, W. R. Ehrlich, R. Eisch, J. Ellsworth, R. W. Engdegard, O. Euler, S. Evenson, P. A. Fadiran, O. Fazely, A. R. Feusels, T. Filimonov, K. Finley, C. Foerster, M. M. Fox, B. D. Franckowiak, A. Franke, R. Gaisser, T. K. Gallagher, J. Ganugapati, R. Gerhardt, L. Gladstone, L. Goldschmidt, A. Goodman, J. A. Gozzini, R. Grant, D. Griesel, T. Gross, A. Grullon, S. Gunasingha, R. M. Gurtner, M. Ha, C. Hallgren, A. Halzen, F. Han, K. Hanson, K. Hasegawa, Y. Helbing, K. Herquet, P. Hickford, S. Hill, G. C. Hoffman, K. D. Homeier, A. Hoshina, K. Hubert, D. Huelsnitz, W. Huelss, J.-P. Hulth, P. O. Hultqvist, K. Hussain, S. Imlay, R. L. Inaba, M. Ishihara, A. Jacobsen, J. Japaridze, G. S. Johansson, H. Joseph, J. M. Kampert, K. -H. Kappes, A. Karg, T. Karle, A. Kelley, J. L. Kemming, N. Kenny, P. Kiryluk, J. Kislat, F. Klein, S. R. Knops, S. Kohnen, G. Kolanoski, H. Koepke, L. Koskinen, D. J. Kowalski, M. Kowarik, T. Krasberg, M. Krings, T. Kroll, G. Kuehn, K. Kuwabara, T. Labare, M. Lafebre, S. Laihem, K. Landsman, H. Lauer, R. Lehmann, R. Lennarz, D. Lundberg, J. Luenemann, J. Madsen, J. Majumdar, P. Maruyama, R. Mase, K. Matis, H. S. McParland, C. P. Meagher, K. Merck, M. Meszaros, P. Meures, T. Middell, E. Milke, N. Miyamoto, H. Montaruli, T. Morse, R. Movit, S. M. Nahnhauer, R. Nam, J. W. Niessen, P. Nygren, D. R. Odrowski, S. Olivas, A. Olivo, M. Ono, M. Panknin, S. Patton, S. Paul, L. de los Heros, C. Perez Petrovic, J. Piegsa, A. Pieloth, D. Pohl, A. C. Porrata, R. Potthoff, N. Price, P. B. Prikockis, M. Przybylski, G. T. Rawlins, K. Redl, P. Resconi, E. Rhode, W. Ribordy, M. Rizzo, A. Rodrigues, J. P. Roth, P. Rothmaier, F. Rott, C. Roucelle, C. Rutledge, D. Ruzybayev, B. Ryckbosch, D. Sander, H. -G. Sarkar, S. Schatto, K. Schlenstedt, S. Schmidt, T. Schneider, D. Schukraft, A. Schulz, O. Schunck, M. Seckel, D. Semburg, B. Seo, S. H. Sestayo, Y. Seunarine, S. Silvestri, A. Slipak, A. Spiczak, G. M. Spiering, C. Stamatikos, M. Stanev, T. Stephens, G. Stezelberger, T. Stokstad, R. G. Stoufer, M. C. Stoyanov, S. Strahler, E. A. Straszheim, T. Sullivan, G. W. Swillens, Q. Taboada, I. Tamburro, A. Tarasova, O. Tepe, A. Ter-Antonyan, S. Terranova, C. Tilav, S. Toale, P. A. Tooker, J. Tosi, D. Turcan, D. van Eijndhoven, N. Vandenbroucke, J. Van Overloop, A. van Santen, J. Voigt, B. Walck, C. Waldenmaier, T. Wallraff, M. Walter, M. Wendt, C. Westerhoff, S. Whitehorn, N. Wiebe, K. Wiebusch, C. H. Wiedemann, A. Wikstrom, G. Williams, D. R. Wischnewski, R. Wissing, H. Woschnagg, K. Xu, C. Xu, X. W. Yodh, G. Yoshida, S. Beatty, James/D-9310-2011; Wiebusch, Christopher/G-6490-2012; Kowalski, Marek/G-5546-2012; Tamburro, Alessio/A-5703-2013; Hallgren, Allan/A-8963-2013; Botner, Olga/A-9110-2013; Sarkar, Subir/G-5978-2011; Tjus, Julia/G-8145-2012; Auffenberg, Jan/D-3954-2014; Koskinen, David/G-3236-2014 Sarkar, Subir/0000-0002-3542-858X; Auffenberg, Jan/0000-0002-1185-9094; Koskinen, David/0000-0002-0514-5917 U.S. National Science Foundation-Office of Polar Program; U.S. National Science Foundation-Physics Division; University of Wisconsin Alumni Research Foundation; U.S. Department of Energy; National Energy Research Scientific Computing Center; Louisiana Optical Network Initiative (LONI) grid computing resources; Swedish Research Council; Swedish Polar Research Secretariat; Knut and Alice Wallenberg Foundation, Sweden; German Ministry for Education and Research (BMBF); Research Department of Plasmas with Complex Interactions (Bochum), Germany; Fund for Scientific Research (FNRS-FWO); Flanders Institute to encourage scientific and technological research in industry (IWT); Belgian Federal Science Policy Office (Belspo); Marsden Fund, New Zealand; SNF (Switzerland); EU Marie Curie; Capes Foundation; Ministry of Education of Brazil We acknowledge the support from the following agencies: U.S. National Science Foundation-Office of Polar Program, U.S. National Science Foundation-Physics Division, University of Wisconsin Alumni Research Foundation, U.S. Department of Energy, and National Energy Research Scientific Computing Center, the Louisiana Optical Network Initiative (LONI) grid computing resources; Swedish Research Council, Swedish Polar Research Secretariat, and Knut and Alice Wallenberg Foundation, Sweden; German Ministry for Education and Research (BMBF), Deutsche Forschungsgemeinschaft (DFG), Research Department of Plasmas with Complex Interactions (Bochum), Germany; Fund for Scientific Research (FNRS-FWO), FWO Odysseus programme, Flanders Institute to encourage scientific and technological research in industry (IWT), Belgian Federal Science Policy Office (Belspo); Marsden Fund, New Zealand; M. Ribordy acknowledges the support of the SNF (Switzerland); A. Kappes and A. Gross acknowledge support by the EU Marie Curie OIF Program; J. P. Rodrigues acknowledge support by the Capes Foundation, Ministry of Education of Brazil. E. B. thanks A. M. Atoyan, C. Dermer, A. Reimer for useful discussion and A. Marscher for providing multi-wavelength data on 3C279. 24 Amer physical soc College pk Physics, Multidisciplinary

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