Description |
Recent detection of a very high energy neutrino above several hundred TeV coincident with a high energy gamma-ray flare (from few hundred MeV to few hundred GeV) from a "blazar" source (TXS 0506+056) has generated a lot of excitement because of its implications for the long standing problem of the origin of high energy cosmic rays. Follow-up observations were also conducted in other wavelengths (X-rays and optical). We will briefly review the different observations that led to this new detection and also discuss their implications for the mechanisms of production of high energy gamma-rays and neutrinos in this source in particular, and the origin of high energy cosmic rays in general.
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