@misc{10481/91967,
year = {2024},
month = {3},
url = {https://hdl.handle.net/10481/91967},
abstract = {Active galaxies, especially blazars, are among the most promising extragalactic candidates for high-energy
neutrino sources. To date, ANTARES searches included these objects and used GeV–TeV γ-ray flux to select
blazars. Here, a statistically complete blazar sample selected by their bright radio emission is used as the target for
searches of origins of neutrinos collected by the ANTARES neutrino telescope over 13 yr of operation. The
hypothesis of a neutrino–blazar directional correlation is tested by pair counting and a complementary likelihoodbased
approach. The resulting posttrial p-value is 3.0% (2.2σ in the two-sided convention). Additionally, a timedependent
analysis is performed to search for temporal clustering of neutrino candidates as a means of detecting
neutrino flares in blazars. None of the investigated sources alone reaches a significant flare detection level.
However, the presence of 18 sources with a pretrial significance above 3σ indicates a p = 1.4% (2.5σ in the twosided
convention) detection of a time-variable neutrino flux. An a posteriori investigation reveals an intriguing
temporal coincidence of neutrino, radio, and γ-ray flares of the J0242+1101 blazar at a p = 0.5% (2.9σ in the twosided
convention) level. Altogether, the results presented here suggest a possible connection of neutrino candidates
detected by the ANTARES telescope with radio-bright blazars.},
organization = {Centre National de la Recherche Scientifique
(CNRS), Commissariat à l’énergie atomique et aux énergies
alternatives (CEA), Commission Européenne (FEDER fund
and Marie Curie Program), LabEx UnivEarthS (ANR-10-
LABX-0023 and ANR-18-IDEX-0001), Région Alsace (contrat
CPER), Région Provence-Alpes-Côte d’Azur, Département
du Var and Ville de La Seyne-sur-Mer, France; Bundesministerium
für Bildung und Forschung (BMBF), Germany; Istituto
Nazionale di Fisica Nucleare (INFN), Italy; Nederlandse
organisatie voor Wetenschappelijk Onderzoek (NWO), the
Netherlands; Executive Unit for Financing Higher Education,
Research, Development and Innovation (UEFISCDI), Romania;
grants PID2021-124591NB-C41, -C42, -C43 funded by
MCIN/AEI/ 10.13039/501100011033 and, as appropriate, by
“ERDF A way of making Europe,” by the “European Union”
or by the “European Union NextGenerationEU/PRTR,”
Programa de Planes Complementarios I+D+I (refs. ASFAE/
2022/023, ASFAE/2022/014), Programa Prometeo (PROMETEO/
2020/019) and GenT (refs. CIDEGENT/2018/034,
/2019/043, /2020/049. /2021/23) of the Generalitat Valenciana,
EU: MSC program (ref. 101025085), Spain; Ministry of
Higher Education, Scientific Research and Innovation, Morocco;
and the Arab Fund for Economic and Social Development,
Kuwait.},
organization = {European Research Council (ERC) under the
European Unionʼs Horizon 2020 Research and Innovation
Programme (grant agreement No. 101018682).},
organization = {European Research Council (ERC) under the
European Union's Horizon 2020 research and innovation
program under grant agreement No. 771282.},
publisher = {American Astronomical Society},
keywords = {Neutrino astronomy},
keywords = {Blazar},
title = {Searches for Neutrinos in the Direction of Radio-bright Blazars with the ANTARES Telescope},
doi = {10.3847/1538-4357/ad1f5b},
author = {Albert, A. and Díaz, A. F. and López Coto, Daniel and ANTARES Collaboration, /},
}