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ANTARES Search for Point Sources of Neutrinos Using Astrophysical Catalogs: A Likelihood Analysis

2021; IOP Publishing; Volume: 911; Issue: 1 Linguagem: Inglês

10.3847/1538-4357/abe53c

1538-4357

A. Albert, M. André, M. Anghinolfi, G. Anton, M. Ardid, J.J. Aubert, J. Aublin, B. Baret, S. Basa, B. Belhorma, V. Bertín, S. Biagi, M. Bissinger, J. Boumaaza, M. Bouta, M.C. Bouwhuis, H. Brânzaş, R. Bruijn, J. Brünner, J. Busto, A. Capone, L. Caramete, J. Carr, V. Carretero, S. Celli, M. Chabab, Thien Nhan Chau, R. Cherkaoui El Moursli, T. Chiarusi, M. Circella, A. Coleiro, Marta Colomer Molla, R. Coniglione, P. Coyle, A. Creusot, A. F. Díaz, G. de Wasseige, A. Deschamps, C. Distefano, I. Di Palma, Alba Domi, C. Donzaud, D. Dornic, D. Drouhin, T. Eberl, N. El Khayati, A. Enzenhöfer, P. Fermani, G. Ferrara, F. Filippini, L. Fusco, Y. Gatelet, P. Gay, H. Glotin, R. Gozzini, R. Gracía, K. Graf, C. Guidi, S. Hallmann, Hans van Haren, A. Heijboer, Y. Hello, J.J. Hernandez, J. Hößl, J. Hofestädt, F. Huang, G. Illuminati, C. James, B. Jisse‐Jung, M. de Jong, P. de Jong, M. Jongen, M. Kadler, O. Kalekin, U. Katz, Nafis Rezwan Khan Chowdhury, A. Kouchner, I. Kreykenbohm, V. Kulikovskiy, R. Lahmann, R. Le Breton, D. Lefèvre, E. Leonora, G. Lévi, Massimiliano Lincetto, D. Lopez‐Coto, S. Loucatos, L. Maderer, J. Mańczak, M. Marcelin, A. Margiotta, A. Marinelli, J. A. Martínez-Mora, S. Mazzou, K. Melis, P. Migliozzi, Michael Möser, A. Moussa, R. Müller, L. Nauta, S. Navas, E. Nezri, A. Núñez-Castiñeyra, B. O’Fearraigh, M. Organokov, G. E. Păvălaş, C. Pellegrino, M. Perrin‐Terrin, P. Piattelli, C. Pieterse, C. Poirè, V. Popa, T. Pradier, N. Randazzo, S. Reck, G. Riccobene, F. Salesa Greus, D. F. E. Samtleben, A. Sánchez‐Losa, M. Sanguineti, P. Sapienza, J. Schnabel, F. Schüßler, M. Spurio, Th. Stolarczyk, M. Taiuti, Y. Tayalati, T. Thakore, S. J. Tingay, B. Vallage, V. Van Elewyck, F. Versari, S. Viola, D. Vivolo, J. Wilms, A. Zegarelli, J. D. Zornoza, J. Zúñiga, S. Buson,

Radio Astronomy Observations and Technology

A search for astrophysical point-like neutrino sources using the data collected by the ANTARES detector between January 29, 2007 and December 31, 2017 is presented. A likelihood stacking method is used to assess the significance of an excess of muon neutrinos inducing track-like events in correlation with the location of a list of possible sources. Different sets of objects are tested in the analysis: a) a sub-sample of the \textit{Fermi} 3LAC catalog of blazars, b) a jet-obscured AGN population, c) a sample of soft gamma-ray selected radio galaxies, d) a star-forming galaxy catalog , and e) a public sample of 56 very-high-energy track events from the IceCube experiment. None of the tested sources shows a significant association with the sample of neutrinos detected by ANTARES. The smallest p-value is obtained for the radio galaxies catalog with an equal weights hypothesis, with a pre-trial p-value equivalent to a $2.8 \, \sigma$ excess, equivalent to $1.6 \, \sigma$ post-trial. In addition, the results of a dedicated analysis for the blazar MG3 J225517+2409 are also reported: this source is found to be the most significant within the \textit{Fermi} 3LAC sample, with 5 ANTARES events located at less than one degree from the source. This blazar showed evidence of flaring activity in \textit{Fermi} data, in space-time coincidence with a high-energy track detected by IceCube. An \emph{a posteriori} significance of $2.0\, \sigma$ for the combination of ANTARES and IceCube data is reported.