Searches for Point-Like and Extended Neutrino Sources Close to the Galactic Center Using the Antares Neutrino Telescope

Van Haren, H.; Pavalas, G. E.; Sanchez Losa, A.; Adrian Martinez, Author(s Silvia; Albert, Andreas; Andre, Michel; Anghinolfi, M.; Anton, G.; Ardid, M.; Aubert, J.-J.; Baret, B.; Barrios Marti, J.; Basa, S.; Bertin, V.; Biagi, S.; Bogazzi, C.; Bormuth, R.; Bou Cabo, M.; Bouwhuis, M. C.; Bruijn, R.; Brunner, J.; Busto, J.; Capone, Antonio; Caramete, L.; Cârloganu, C.; Carr, J.; Chiarusi, T.; Circella, M.; Core, L.; Costantini, H.; Coyle, P.; Creusot, A.; Curtil, C.; De Rosa, G.; Dekeyser, I.; Deschamps, A.; De Bonis, Giulia; Distefano, C.; Donzaud, C.; Dornic, D.; Dorosti, Q.; Drouhin, D.; Dumas, A.; Eberl, T.; Elsasser, D.; Enzenhofer, A.; Escoffier, S.; Fehn, K.; Felis, I.; Fermani, Paolo; Folger, F.; Fusco, L. A.; Galata, S.; Gay, P.; Geisselsoder, S.; Geyer, K.; Giordano, V.; Gleixner, A.; Gómez-González, J. P.; Graf, K.; Guillard, G.; Heijboer, A. J.; Hello, Y.; Hernandez Rey, J. J.; Herold, B.; Herrero, A.; de Jong, M.; Hossl, J.; Hofestadt, J.; James, C. W.; Kadler, M.; Kalekin, O.; Katz, U.; Kiessling, D.; Kooijman, P.; Kouchner, A.; Kreykenbohm, I.; Kulikovskiy, V.; Lahmann, R.; Lambard, E.; Lambard, G.; Lattuada, D.; Lefevre, D.; Leonora, E.; Loehner, H.; Loucatos, S.; Mangano, S.; Perrina, Chiara; Păvălaş, G. E.; Marcelin, M.; Piattelli, P.; Margiotta, A.; Martínez-Mora, J. A.; Popa, V.; Pradier, T.; Martini, S.; Racca, C.; Mathieu, A.; Michael, T.; Riccobene, G.; Migliozzi, P.; Richter, R.; Roensch, K.; Mueller, C.; Neff, M.; Rostovtsev, A.; Nezri, E.; Saldana, M.; Palioselitis, D.; Samtleben, D. F. E.; Sanguineti, M.; Sánchez-Losa, A.; Sapienza, P.; Schmid, J.; Schnabel, J.; Schulte, S.; Schussler, F.; Seitz, T.; Sieger, C.; Spies, A.; Spurio, M.; Steijger, J. J. M.; Stolarczyk, Th-H.; Carloganu, C.; Taiuti, M.; Tamburini, C.; Tayalati, Y.; Trovato, A.; Vallage, B.; Vallee, C.; Van Elewyck, V.; Visser, E.; Vivolo, D.; Wagner, S.; Wilms, J.; de Wolf, E.; Yatkin, K.; Yepes, H.; Zornoza, J. D.; Gomez Gonzalez, J. P.; Zuniga, J.; Martinez Mora, J. A.

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American Astronomical Society, Astrophysical Journal Letters, 1(786), p. L5, 2014

DOI: 10.1088/2041-8205/786/1/l5

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Searches for Point-Like and Extended Neutrino Sources Close to the Galactic Center Using the Antares Neutrino Telescope

Journal article published in 2014 by H. Van Haren, G. E. Pavalas, A. Sanchez Losa, Author(s Silvia Adrian Martinez, Andreas Albert, Michel Andre, M. Anghinolfi, G. Anton, M. Ardid

, J.-J. Aubert, B. Baret

, J. Barrios Marti, S. Basa

, V. Bertin, S. Biagi and other authors.

This paper is made freely available by the publisher.

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Abstract

A search for cosmic neutrino sources using six years of data collected by the ANTARES neutrino telescope has been performed. Clusters of muon neutrinos over the expected atmospheric background have been looked for. No clear signal has been found. The most signal-like accumulation of events is located at equatorial coordinates RA=$-$46.8$^{∘}$ and Dec=$-$64.9$^{∘}$ and corresponds to a 2.2$σ$ background fluctuation. In addition, upper limits on the flux normalization of an E$^{-2}$ muon neutrino energy spectrum have been set for 50 pre-selected astrophysical objects. Finally, motivated by an accumulation of 7 events relatively close to the Galactic Centre in the recently reported neutrino sample of the IceCube telescope, a search for point sources in a broad region around this accumulation has been carried out. No indication of a neutrino signal has been found in the ANTARES data and upper limits on the flux normalization of an E$^{-2}$ energy spectrum of neutrinos from point sources in that region have been set. The 90% confidence level upper limits on the muon neutrino flux normalization vary between 3.5 and 5.1$\times$10$^{-8}$ GeV$\,$cm$^{-2}$s$^{-1}$, depending on the exact location of the source.

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Searches for Point-Like and Extended Neutrino Sources Close to the Galactic Center Using the Antares Neutrino Telescope

Abstract