Journal
ASTROPHYSICAL JOURNAL
Volume 911, Issue 1, Pages -Publisher
IOP Publishing Ltd
DOI: 10.3847/1538-4357/abe53c
Keywords
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Categories
Funding
- Centre National de la Recherche Scientifique (CNRS)
- Commissariat a l'energie atomique et aux energies alternatives (CEA)
- Commission Europeenne (FEDER fund and Marie Curie Program)
- Institut Universitaire de France (IUF)
- LabEx UnivEarthS [ANR-10-LABX-0023, ANR18-IDEX-0001]
- Region Ile-de-France (DIM-ACAV)
- Region Alsace (contrat CPER)
- Region Provence-Alpes-Cote d'Azur, Departement du Var and Ville de La Seyne-sur-Mer, France
- Bundesministerium fur Bildung und Forschung (BMBF), Germany
- Istituto Nazionale di Fisica Nucleare (INFN), Italy
- Nederlandse organisatie voor Wetenschappelijk Onderzoek (NWO), the Netherlands
- Council of the President of the Russian Federation for young scientists and leading scientific schools supporting grants, Russia
- Executive Unit for Financing Higher Education, Research, Development and Innovation (UEFISCDI), Romania
- Ministerio de Ciencia, Innovacion, Investigacion y Universidades (MCIU): Programa Estatal de Generacion de Conocimiento (MCIU/FEDER) [PGC2018-096663-B-C41, PGC2018-096663-A-C42, PGC2018-096663-B-C43, PGC2018-096663-B-C44]
- Severo Ochoa Centre of Excellence and MultiDark Consolider (MCIU), Junta de Andalucia [SOMM17/6104/UGR, A-FQM-053UGR18]
- Generalitat Valenciana, Spain [GRISOLIA/2018/119, CIDEGENT/2018/034]
- Ministry of Higher Education, Scientific Research and Professional Training, Morocco
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A search for astrophysical pointlike neutrino sources using ANTARES detector data revealed no significant associations with the tested objects. A dedicated analysis of the blazar MG3 J225517+2409 showed it to be the most significant source within the Fermi 3LAC sample.
A search for astrophysical pointlike neutrino sources using the data collected by the ANTARES detector between 2007 January 29 and 2017 December 31 is presented. A likelihood 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 subsample of the Fermi 3LAC catalog of blazars, (b) a jet-obscured population of active galactic nuclei, (c) a sample of hard X-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 catalog of radio galaxies with an equal-weights hypothesis, with a pre-trial p-value equivalent to a 2.8 sigma excess, which is 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 Fermi 3LAC sample, with five ANTARES events located less than one degree from the source. This blazar showed evidence of flaring activity in Fermi data, in spacetime coincidence with a high-energy track detected by IceCube. An a posteriori significance of 2.6 sigma for the combination of ANTARES and IceCube data is reported.
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