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Abstract:
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[EN] 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 signicance ...[+]
[EN] 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 signicance 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 signi¿cant 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 2.8sigma excess, which is equivalent to 1.6sigma 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 signi¿cant within the Fermi 3LAC sample, with five ANTARES events located less than one degree from the source.
This blazar showed evidence of ¿aring activity in Fermi data, in spacetime coincidence with a
high-energy track detected by IceCube. An a posteriori signicance of 2.6sigma for the combination of
ANTARES and IceCube data is reported.
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Project ID:
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info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PGC2018-096663-A-C42/ES/CARACTERIZACION DEL FONDO ACUSTICO EN EL OBSERVATORIO SUBMARINO KM3NET/
info:eu-repo/grantAgreement/GENERALITAT VALENCIANA//GRISOLIAP%2F2018%2F119//AYUDA SANTIAGO GRISOLIA PROYECTO: ACUSTICA EN DETECTORES DE PARTICULAS/
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info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PGC2018-096663-A-C42/ES/CARACTERIZACION DEL FONDO ACUSTICO EN EL OBSERVATORIO SUBMARINO KM3NET/
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PGC2018-096663-B-C41/ES/FISICA FUNDAMENTAL Y ASTRONOMIA MULTIMENSAJERO CON TELESCOPIOS DE NEUTRINOS/
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PGC2018-096663-B-C43/ES/FISICA FUNDAMENTAL, DETECCION ACUSTICA Y ASTRONOMIA MULTI-MENSAJERO CON TELESCOPIOS DE NEUTRINOS EN LA UPV/
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PGC2018-096663-B-C44/ES/FISICA FUNDAMENTAL Y ASTRONOMIA MULTI-MENSAJERO CON TELESCOPIOS DE NEUTRINOS EN LA UGR/
info:eu-repo/grantAgreement/GENERALITAT VALENCIANA//GRISOLIAP%2F2018%2F119//AYUDA SANTIAGO GRISOLIA PROYECTO: ACUSTICA EN DETECTORES DE PARTICULAS/
info:eu-repo/grantAgreement/Junta de Andalucía//SOMM17%2F6104%2FUGR /
info:eu-repo/grantAgreement/GVA//GRISOLIA%2F2018%2F119/
info:eu-repo/grantAgreement/GVA//CIDEGENT%2F2018%2F034 /
info:eu-repo/grantAgreement/LabEx UnivEarthS//ANR-10-LABX-0023 /
info:eu-repo/grantAgreement/LabEx UnivEarthS//ANR18-IDEX-0001/
info:eu-repo/grantAgreement/Conseil Régional d'Alsace//CPER/
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Thanks:
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The authors acknowledge the financial support of the funding agencies: Centre National de la Recherche Scientifique (CNRS), Commissariat a l'energie atomique et aux energies alternatives (CEA), Commission Europeenne (FEDER ...[+]
The authors acknowledge the financial support of the funding agencies: 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 and 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 (refs. PGC2018-096663-B-C41, -A-C42, -B-C43, -B-C44) (MCIU/FEDER), Severo Ochoa Centre of Excellence and MultiDark Consolider (MCIU), Junta de Andalucia (ref. SOMM17/6104/UGR and A-FQM-053UGR18), Generalitat Valenciana: Grisolia (ref. GRISOLIA/2018/119) and GenT (ref. CIDEGENT/2018/034), Spain; Ministry of Higher Education, Scientific Research and Professional Training, Morocco. We also acknowledge the technical support of Ifremer, AIM and Foselev Marine for the sea operation and the CC-IN2P3 for the computing facilities.
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