We report a search for astronomical neutrinos in the energy region from several GeV to TeV in the direction of the blazar TXS0506+056 using the Super-Kamiokande detector following the detection of a 100 TeV neutrino from the same location by the IceCube collaboration. Using Super-Kamiokande neutrino data across several data samples observed from April 1996 to February 2018 we have searched for both a total excess above known backgrounds across the entire period as well as localized excesses on smaller time scales in that interval. No significant excess nor significant variation in the observed event rate are found in the blazar direction. Upper limits are placed on the electron and muon neutrino fluxes at 90% confidence level as 6.0 × 10−7 and 4.5 × 10−7 to 9.3 × 10−10 [erg/cm2/s], respectively.
|Publication status||Published - Oct 16 2019|
- BL Lacertae objects: individual (TXS0506+056)
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