| Abstract : | IceCube Collaboration has discovered very high-energy extraterrestrial neutrinos, which leads to the question, "Where and How are these high-energy neutrinos produced ?" The tentative association of high-energy neutrinos with flaring blazars has previously been suggested. The gamma-ray photons and neutrinos may be generated due to the photo-hadronic process in blazars indicating proton acceleration in relativistic jets. It had been demonstrated previously that a single source (PKS B1424-418) might explain the spatial and temporal coincidence of the 2 PeV neutrino event (IC35) during its major outburst (2012 Jul 16 to 2013 Apr 30). Interestingly, blazar PKS B1424-418 began flaring again in July 2021 and continued, generating a greater flux than the previous Fermi-LAT's flaring episode at the energy range of 100 MeV to 300 GeV. Here we present a comparison of the recent flare with the earlier flare, which coincided with the 2 PeV neutrino event (IC35). |
