Search for muon-neutrino emission from GeV and TeV gamma-ray flaring blazars using five years of data of the ANTARES telescope

The ANTARES telescope is well-suited for detecting astrophysical transient neutrinosources as it can observe a full hemisphere of the sky at all times with a high duty cycle.The background due to atmospheric particles can be drastically reduced, and the point-sourcesensitivity improved, by selecting a narrow time window around possible neutrino productionperiods. Blazars, being radio-loud active galactic nuclei with their jets pointing almostdirectly towards the observer, are particularly attractive potential neutrino point sources,since they are among the most likely sources of the very high-energy cosmic rays. Neutrinosand gamma rays may be produced in hadronic interactions with the surrounding medium.Moreover, blazars generally show high time variability in their light curves at different wavelengthsand on various time scales. This paper presents a time-dependent analysis appliedto a selection of flaring gamma-ray blazars observed by the FERMI/LAT experiment andby TeV Cherenkov telescopes using five years of ANTARES data taken from 2008 to 2012.The results are compatible with fluctuations of the background. Upper limits on the neutrinofluence have been produced and compared to the measured gamma-ray spectral energydistribution