# First neutrino point-source results from the 22 string IceCube detector

R Abbasi, et al.
(2009) 701(1). p.L47-L51
Author
Organization
Abstract
We present new results of searches for neutrino point sources in the northern sky, using data recorded in 2007-2008 with 22 strings of the IceCube detector (approximately one-fourth of the planned total) and 275.7 days of live time. The final sample of 5114 neutrino candidate events agrees well with the expected background of atmospheric muon neutrinos and a small component of atmospheric muons. No evidence of a point source is found, with the most significant excess of events in the sky at 2.2 sigma after accounting for all trials. The average upper limit over the northern sky for point sources of muon-neutrinos with E-2 spectrum is E-2 Phi(v mu) < 1.4 x 10(-11) TeV cm(-2) s(-1), in the energy range from 3 TeV to 3 PeV, improving the previous best average upper limit by the AMANDA-II detector by a factor of 2.
Keywords
GAMMA-RAYS, ASTRONOMY, TELESCOPES, HIGH-ENERGY NEUTRINOS

## Citation

Chicago
Abbasi, R, Yasser Abdou, M Ackermann, J Adams, J Aguilar, M Ahlers, K Andeen, et al. 2009. “First Neutrino Point-source Results from the 22 String IceCube Detector.” Astrophysical Journal Letters 701 (1): L47–L51.
APA
Abbasi, R., Abdou, Y., Ackermann, M., Adams, J., Aguilar, J., Ahlers, M., Andeen, K., et al. (2009). First neutrino point-source results from the 22 string IceCube detector. ASTROPHYSICAL JOURNAL LETTERS, 701(1), L47–L51.
Vancouver
1.
Abbasi R, Abdou Y, Ackermann M, Adams J, Aguilar J, Ahlers M, et al. First neutrino point-source results from the 22 string IceCube detector. ASTROPHYSICAL JOURNAL LETTERS. 2009;701(1):L47–L51.
MLA
Abbasi, R, Yasser Abdou, M Ackermann, et al. “First Neutrino Point-source Results from the 22 String IceCube Detector.” ASTROPHYSICAL JOURNAL LETTERS 701.1 (2009): L47–L51. Print.
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abstract     = {We present new results of searches for neutrino point sources in the northern sky, using data recorded in 2007-2008 with 22 strings of the IceCube detector (approximately one-fourth of the planned total) and 275.7 days of live time. The final sample of 5114 neutrino candidate events agrees well with the expected background of atmospheric muon neutrinos and a small component of atmospheric muons. No evidence of a point source is found, with the most significant excess of events in the sky at 2.2 sigma after accounting for all trials. The average upper limit over the northern sky for point sources of muon-neutrinos with E-2 spectrum is E-2 Phi(v mu) {\textlangle} 1.4 x 10(-11) TeV cm(-2) s(-1), in the energy range from 3 TeV to 3 PeV, improving the previous best average upper limit by the AMANDA-II detector by a factor of 2.},
author       = {Abbasi, R and Abdou, Yasser and Ackermann, M and Adams, J and Aguilar, J and Ahlers, M and Andeen, K and Auffenberg, J and Bai, X and Baker, M and Barwick, SW and Bay, R and Alba, JLB and Beattie, K and Beatty, JJ and Bechet, S and Becker, JK and Becker, KH and Benabderrahmane, ML and Berdermann, J and Berghaus, P and Berley, D and Bernardini, E and Bertrand, D and Besson, DZ and Bissok, M and Blaufuss, E and Boersma, DJ and Bohm, C and Bolmont, J and Boser, S and Botner, O and Bradley, L and Braun, J and Breder, D and Castermans, T and Chirkin, D and Christy, B and Clem, J and Cohen, S and Cowen, DF and D'Agostino, MV and Danninger, M and Day, CT and De Clercq, C and Demirors, L and Depaepe, O and Descamps, Freija and Desiati, P and De Vries-Uiterweerd, Garmt and DeYoung, T and Diaz-Velez, JC and Dreyer, J and Dumm, JP and Duvoort, MR and Edwards, WR and Ehrlich, R and Eisch, J and Ellsworth, RW and Engdegard, O and Euler, S and Evenson, PA and Fadiran, O and Fazely, AR and Feusels, Tom and Filimonov, K and Finley, C and Foerster, MM and Fox, BD and Franckowiak, A and Franke, R and Gaisser, TK and Gallagher, J and Ganugapati, R and Gerhardt, L and Gladstone, L and Goldschmidt, A and Goodman, JA and Gozzini, R and Grant, D and Griesel, T and Gross, A and Grullon, S and Gunasingha, RM and Gurtner, M and Ha, C and Hallgren, A and Halzen, F and Han, K and Hanson, K and Hasegawa, Y and Heise, J and Helbing, K and Herquet, P and Hickford, S and Hill, GC and Hoffman, KD and Hoshina, K and Hubert, D and Huelsnitz, W and Hulss, JP and Hulth, PO and Hultqvist, K and Hussain, S and Imlay, RL and Inaba, M and Ishihara, A and Jacobsen, J and Japaridze, GS and Johansson, H and Joseph, JM and Kampert, KH and Kappes, A and Karg, T and Karle, A and Kelley, JL and Kenny, P and Kiryluk, J and Kislat, F and Klein, SR and Klepser, S and Knops, S and Kohnen, G and Kolanoski, H and Kopke, L and Kowalski, M and Kowarik, T and Krasberg, M and Kuehn, K and Kuwabara, T and Labare, M and Lafebre, S and Laihem, K and Landsman, H and Lauer, R and Leich, H and Lennarz, D and Lucke, A and Lundberg, J and Lunemann, J and Madsen, J and Majumdar, P and Maruyama, R and Mase, K and Matis, HS and McParland, CP and Meagher, K and Merck, M and Meszaros, P and Middell, E and Milke, N and Miyamoto, H and Mohr, A and Montaruli, T and Morse, R and Movit, SM and Munich, K and Nahnhauer, R and Nam, JW and Nieen, P and Nygren, DR and Odrowski, S and Olivas, A and Olivo, M and Ono, M and Panknin, S and Patton, S and Heros, CPD and Petrovic, J and Piegsa, A and Pieloth, D and Pohl, AC and Porrata, R and Potthoff, N and Price, PB and Prikockis, M and Przybylski, GT and Rawlins, K and Redl, P and Resconi, E and Rhode, W and Ribordy, M and Rizzo, A and Rodrigues, JP and Roth, P and Rothmaier, F and Rott, C and Roucelle, C and Rutledge, D and Ryckbosch, Dirk and Sander, HG and Sarkar, S and Satalecka, K and Schlenstedt, S and Schmidt, T and Schneider, D and Schukraft, A and Schulz, O and Schunck, M and Seckel, D and Semburg, B and Seo, SH and Sestayo, Y and Seunarine, S and Silvestri, A and Slipak, A and Spiczak, GM and Spiering, C and Stamatikos, M and Stanev, T and Stephens, G and Stezelberger, T and Stokstad, RG and Stoufer, MC and Stoyanov, S and Strahler, EA and Straszheim, T and Sulanke, KH and Sullivan, GW and Swillens, Q and Taboada, I and Tarasova, O and Tepe, A and Ter-Antonyan, S and Terranova, C and Tilav, S and Tluczykont, M and Toale, PA and Tosi, D and Turcan, D and van Eijndhoven, N and Vandenbroucke, J and Van Overloop, Arne and Voigt, B and Walck, C and Waldenmaier, T and Walter, M and Wendt, C and Westerhoff, S and Whitehorn, N and Wiebusch, CH and Wiedemann, A and Wikstrom, G and Williams, DR and Wischnewski, R and Wissing, H and Woschnagg, K and Xu, XW and Yodh, G and Yoshida, S},
issn         = {2041-8205},
journal      = {ASTROPHYSICAL JOURNAL LETTERS},
keyword      = {GAMMA-RAYS,ASTRONOMY,TELESCOPES,HIGH-ENERGY NEUTRINOS},
language     = {eng},
number       = {1},
pages        = {L47--L51},
title        = {First neutrino point-source results from the 22 string IceCube detector},
url          = {http://dx.doi.org/10.1088/0004-637X/701/1/L47},
volume       = {701},
year         = {2009},
}

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