Speaker
Yongsoo Jho
(Yonsei University)
Description
Even though conventional leptonic or lepto-hadronic models of blazar successfully explain the observed electromagnetic component of the flaring signal from the Blazar TXS 0506+056 in a large range of energy window 𝐸𝛾∈(10−1eV,102 GeV), the predicted neutrino flux is too small to be consistent with the IceCube observation at 𝐸𝜈∼300 TeV. We show that a sizable self-interaction of neutrinos with a light messenger resolves the discrepancy. Interestingly, the same physics can relieve the cosmological tension in 𝐻0 and 𝜎8.
