Searches for extended and point-like neutrino sources with four years of IceCube data

Searches for extended and point-like neutrino sources with four years of IceCube data

We present results on searches for point-like sources of neutrinos using four years of IceCube data, including the first year of data from the completed 86 string detector. The total livetime of the combined data set is 1373 days. For an E-2 spectrum, the observed 90% C. L. flux upper limits are sim...

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Hauptverfasser: Aartsen, MG, Adams, J, Anderson, T, Auffenberg, J, Barwick, SW, Baum, V, Tjus, JB, Becker, KH, Bernhard, A, Binder, G, Bindig, D, Blaufuss, E, Boersma, DJ, Bretz, HP, Brown, AM, Cheung, E, Chirkin, D, Christov, A, Clark, K, Classen, L, Clevermann, F, Coenders, S, Silva, AHC, de Andre, JPAM, Eisch, J, Euler, S, Finley, C, Frantzen, K, Gerhardt, L, Gier, D, Gladstone, L, Gonzalez, JG, Gretskov, P, Haj Ismail, Abd Al Karim, Helbing, K, Hellauer, R, Hellwig, D, Hoffman, KD, Hultqvist, K, Jacobsen, J, Japaridze, GS, Jero, K, Jurkovic, M, Kappes, A, Karle, A, Kiryluk, J, Krings, K, Kunnen, J, Kuwabara, T, Labare, Mathieu, Lesiak-Bzdak, M, Macias, O, Maggi, G, Miarecki, S, Middlemas, E, Miller, J, Nahnhauer, R, Niederhausen, H, Obertacke, A, O'Murchadha, A, Penek, O, Rees, I, Reimann, R, Resconi, E, Riedel, B, Rodrigues, JP, Rongen, M, Rott, C, Ruhe, T, Ruzybayev, B, Saba, SM, Sarkar, S, Scheriau, F, Schmidt, T, Schoenen, S, Schoneberg, S, Schukraft, A, Schulte, L, Schulz, O, Shanidze, R, Stanisha, NA, Sullivan, GW, Ter-Antonyan, S, Terliuk, A, Tesic, G, Tilav, S, Toale, PA, Tosi, D, Usner, M, Vallecorsa, S, Vraeghe, Matthias, Walck, C, Weaver, C, Whitehorn, N, Wichary, C, Wiebe, K, Wolf, M, Woschnagg, K, Yanez, JP, Ziemann, J
Format: Artikel
Sprache:eng
Schlagworte:
ACTIVE GALACTIC NUCLEI
ASTRONOMY
astroparticle physics
COSMIC-RAYS
FERMI LAT
galaxies: active
galaxies: clusters: general
galaxies: starburst
GAMMA-RAY EMISSION
HIGH-ENERGY NEUTRINOS
ISM: supernova remnants
MILAGRO
neutrinos
PARTICLE-ACCELERATION
Physics and Astronomy
SUPERNOVA-REMNANTS
TELESCOPE
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Zusammenfassung:We present results on searches for point-like sources of neutrinos using four years of IceCube data, including the first year of data from the completed 86 string detector. The total livetime of the combined data set is 1373 days. For an E-2 spectrum, the observed 90% C. L. flux upper limits are similar to 10(-12) TeV-1 cm(-2) s(-1) for energies between 1 TeV and 1 PeV in the northern sky and similar to 10(-11) TeV-1 cm(-2) s(-1) for energies between 100 TeV and 100 PeV in the southern sky. This represents a 40% improvement compared to previous publications, resulting from both the additional year of data and the introduction of improved reconstructions. In addition, we present the first results from an all-sky search for extended sources of neutrinos. We update the results of searches for neutrino emission from stacked catalogs of sources and test five new catalogs; two of Galactic supernova remnants and three of active galactic nuclei. In all cases, the data are compatible with the background-only hypothesis, and upper limits on the flux of muon neutrinos are reported for the sources considered.
ISSN:0004-637X