Five years of searches for point sources of astrophysical neutrinos with the AMANDA-II neutrino telescope
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Five years of searches for point sources of astrophysical neutrinos with the AMANDA-II neutrino telescope

A. Achterberg,Markus Ackermann,J. Adams,J. Ahrens,K. Andeen,D. W. Atlee,J. N. Bahcall,X. Bai,B. Baret,S. W. Barwick,R. Bay,K. Beattie,T. Becka,J. K. Becker,K.-H. Becker,P. Berghaus,D. Berley,Elisa Bernardini,D. Bertrand,D. Z. Besson,E. Blaufuss,D. J. Boersma,C. Bohm,Julien Bolmont,S. Böser,O. Botner,A. Bouchta,J. Braun,C. Burgess,T. Castermans,D. Chirkin,B. Christy,J. Clem,D. F. Cowen,M. V. D’Agostino,A. Davour,C. T. Day,Catherine De Clercq,L. Demirörs,F. Descamps,Paolo Desiati,Tyce DeYoung,Juan Carlos Díaz Vélez,J. Dreyer,J. P. Dumm,M. R. Duvoort,W. R. Edwards,R. Ehrlich,J. Eisch,R. W. Ellsworth,P. A. Evenson,O. Fadiran,A. R. Fazely,T. Feser,K. Filimonov,B. D. Fox,T. K. Gaisser,J. Gallagher,R. Ganugapati,H. Geenen,L. Gerhardt,A. Goldschmidt,J. A. Goodman,R. Gozzini,S. Grullon,A. Groß,R. M. Gunasingha,M. Gurtner,A. Hallgren,F. Halzen,K. Han,K. Hanson,D. Hardtke,T. Harenberg,J. E. Hart,T. Hauschildt,D. Hays,J. Heise,Klaus Helbing,M. Hellwig,P. Herquet,Gary Hill,J. Hodges,K. D. Hoffman,B. Hommez,K. Hoshina,Daan Hubert,B. Hughey,P. O. Hulth,K. Hultqvist,S. Hundertmark,J.-P. Hülß,A. Ishihara,J. Jacobsen,G. S. Japaridze,H. Johansson,A. Jones,J. M. Joseph,Karl-Heinz Kampert,A. Karle,H. Kawai,J. L. Kelley,M. Kestel,N. Kitamura,Spencer Klein,S. Klepser,G. Kohnen,Hermann Kolanoski,Marek Kowalski,L. Köpke,M. Krasberg,K. Kuehn,H. Landsman,H. Leich,D. Leier,M. Leuthold,I. Liubarsky,J. Lundberg,J. Lünemann,J. Madsen,K. Mase,H. S. Matis,Thomas McCauley,C. P. McParland,A. Meli,T. Messarius,P. Mészáros,H. Miyamoto,A. Mokhtarani,Teresa Montaruli,A. Morey,R. Morse,S. M. Movit,K. Münich,R. Nahnhauer,J. W. Nam,P. Nießen,D. R. Nygren,H. Ögelman,A. Olivas,S. Patton,Carlos Peña Garay,Carlos Pérez De Los Heros,A. Piegsa,D. Pieloth,A. C. Pohl,R. Porrata,J. Pretz,P. B. Price,G. T. Przybylski,K. Rawlins,S. Razzaque,Elisa Resconi,W. Rhode,M. Ribordy,A. Rizzo,S. Robbins,P. Roth,Carsten Rott,D. Rutledge,D. Ryckbosch,H.-G. Sander,Subir Sarkar,S. Schlenstedt,T. Schmidt,D. Schneider,D. Seckel,Seon-Hee Seo,S. Seunarine,A. Silvestri,A. J. Smith,M. Solarz,C. Song,J. E. Sopher,G. M. Spiczak,C. Spiering,M. Stamatikos,T. Stanev,P. Steffen,T. Stezelberger,R. G. Stokstad,M. C. Stoufer,S. Stoyanov,E. A. Strahler,T. Straszheim,K.-H. Sulanke,G. W. Sullivan,T. J. Sumner,I. Taboada,O. Tarasova,A. Tepe,L. Thollander,S. Tilav,M. Tluczykont,P. A. Toale,D. Turčan,N. Van Eijndhoven,J. Vandenbroucke,A. Van Overloop,B. Voigt,W. Wagner,C. Walck,H. Waldmann,M. Walter,Y.-R. Wang,C. Wendt,C. H. Wiebusch,G. Wikström,D. R. Williams,R. Wischnewski,H. Wissing,K. Woschnagg,X. W. Xu,G. Yodh,Shigeru Yoshida,Juan De Dios Zornoza;A. Achterberg;Markus Ackermann;J. Adams;J. Ahrens;K. Andeen;D. W. Atlee;J. N. Bahcall;X. Bai;B. Baret;S. W. Barwick;R. Bay;K. Beattie;T. Becka;J. K. Becker;K.-H. Becker;P. Berghaus;D. Berley;Elisa Bernardini;D. Bertrand;D. Z. Besson;E. Blaufuss;D. J. Boersma;C. Bohm;Julien Bolmont;S. Böser;O. Botner;A. Bouchta;J. Braun;C. Burgess;T. Castermans;D. Chirkin;B. Christy;J. Clem;D. F. Cowen;M. V. D’Agostino;A. Davour;C. T. Day;Catherine De Clercq;L. Demirörs;F. Descamps;Paolo Desiati;Tyce DeYoung;Juan Carlos Díaz Vélez;J. Dreyer;J. P. Dumm;M. R. Duvoort;W. R. Edwards;R. Ehrlich;J. Eisch;R. W. Ellsworth;P. A. Evenson;O. Fadiran;A. R. Fazely;T. Feser;K. Filimonov;B. D. Fox;T. K. Gaisser;J. Gallagher;R. Ganugapati;H. Geenen;L. Gerhardt;A. Goldschmidt;J. A. Goodman;R. Gozzini;S. Grullon;A. Groß;R. M. Gunasingha;M. Gurtner;A. Hallgren;F. Halzen;K. Han;K. Hanson;D. Hardtke;T. Harenberg;J. E. Hart;T. Hauschildt;D. Hays;J. Heise;Klaus Helbing;M. Hellwig;P. Herquet;Gary Hill;J. Hodges;K. D. Hoffman;B. Hommez;K. Hoshina;Daan Hubert;B. Hughey;P. O. Hulth;K. Hultqvist;S. Hundertmark;J.-P. Hülß;A. Ishihara;J. Jacobsen;G. S. Japaridze;H. Johansson;A. Jones;J. M. Joseph;Karl-Heinz Kampert;A. Karle;H. Kawai;J. L. Kelley;M. Kestel;N. Kitamura;Spencer Klein;S. Klepser;G. Kohnen;Hermann Kolanoski;Marek Kowalski;L. Köpke;M. Krasberg;K. Kuehn;H. Landsman;H. Leich;D. Leier;M. Leuthold;I. Liubarsky;J. Lundberg;J. Lünemann;J. Madsen;K. Mase;H. S. Matis;Thomas McCauley;C. P. McParland;A. Meli;T. Messarius;P. Mészáros;H. Miyamoto;A. Mokhtarani;Teresa Montaruli;A. Morey;R. Morse;S. M. Movit;K. Münich;R. Nahnhauer;J. W. Nam;P. Nießen;D. R. Nygren;H. Ögelman;A. Olivas;S. Patton;Carlos Peña Garay;Carlos Pérez De Los Heros;A. Piegsa;D. Pieloth;A. C. Pohl;R. Porrata;J. Pretz;P. B. Price;G. T. Przybylski;K. Rawlins;S. Razzaque;Elisa Resconi;W. Rhode;M. Ribordy;A. Rizzo;S. Robbins;P. Roth;Carsten Rott;D. Rutledge;D. Ryckbosch;H.-G. Sander;Subir Sarkar;S. Schlenstedt;T. Schmidt;D. Schneider;D. Seckel;Seon-Hee Seo;S. Seunarine;A. Silvestri;A. J. Smith;M. Solarz;C. Song;J. E. Sopher;G. M. Spiczak;C. Spiering;M. Stamatikos;T. Stanev;P. Steffen;T. Stezelberger;R. G. Stokstad;M. C. Stoufer;S. Stoyanov;E. A. Strahler;T. Straszheim;K.-H. Sulanke;G. W. Sullivan;T. J. Sumner;I. Taboada;O. Tarasova;A. Tepe;L. Thollander;S. Tilav;M. Tluczykont;P. A. Toale;D. Turčan;N. Van Eijndhoven;J. Vandenbroucke;A. Van Overloop;B. Voigt;W. Wagner;C. Walck;H. Waldmann;M. Walter;Y.-R. Wang;C. Wendt;C. H. Wiebusch;G. Wikström;D. R. Williams;R. Wischnewski;H. Wissing;K. Woschnagg;X. W. Xu;G. Yodh;Shigeru Yoshida;Juan De Dios Zornoza;
physical review d 2007 Vol. 75 pp. 102001-
124
zornoza2007physicalfive

Abstract

We report the results of a five-year survey of the northern sky to search for point sources of high energy neutrinos. The search was performed on the data collected with the AMANDA-II neutrino telescope in the years 2000 to 2004, with a live time of 1001 days. The sample of selected events consists of 4282 upward going muon tracks with high reconstruction quality and an energy larger than about 100 GeV. We found no indication of point sources of neutrinos and set 90% confidence level flux upper limits for an all-sky search and also for a catalog of 32 selected sources. For the all-sky search, our average (over declination and right ascension) experimentally observed upper limit Φ0=(E1 TeV)γ·dΦdE to a point source flux of muon and tau neutrino (detected as muons arising from taus) is Φνμ+ν¯μ0+Φντ+ν¯τ0=11.1×10−11 TeV−1 cm−2 s−1, in the energy range between 1.6 TeV and 2.5 PeV for a flavor ratio Φνμ+ν¯μ0/Φντ+ν¯τ0=1 and assuming a spectral index γ=2. It should be noticed that this is the first time we set upper limits to the flux of muon and tau neutrinos. In previous papers we provided muon neutrino upper limits only neglecting the sensitivity to a signal from tau neutrinos, which improves the limits by 10% to 16%. The value of the average upper limit presented in this work corresponds to twice the limit on the muon neutrino flux Φνμ+ν¯μ0=5.5×10−11 TeV−1 cm−2 s−1. A stacking analysis for preselected active galactic nuclei and a search based on the angular separation of the events were also performed. We report the most stringent flux upper limits to date, including the results of a detailed assessment of systematic uncertainties.

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natural sciences

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DOI:
10.1103/physrevd.75.102001
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https://sciprofiles.com/publication/view/c0d3094c5...

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