Search for Astronomical Neutrinos from Blazar TXS0506+056 in Super-Kamiokande

Abstract

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 $6.03\times 10^{-7}$ and $4.52\times 10^{-7}$ to $9.26\times 10^{-10}$ [$\mathrm{erg}/{\mathrm{cm}}^2/\mathrm{s}$], respectively.

References in corpus (2)

• The 5th edition of the Roma-BZCAT. A short presentation
• Search for an excess of events in the Super-Kamiokande detector in the directions of the astrophysical neutrinos reported by the IceCube Collaboration

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• On the Challenges of Cosmic-Ray Proton Shock Acceleration in the Intracluster Medium
• Did IceCube discover Dark Matter around Blazars?
• KamLAND's search for correlated low-energy electron antineutrinos with astrophysical neutrinos from IceCube
• Blazar-Boosted Dark Matter: Novel Signatures via Elastic and Inelastic Scattering