Description |
On 22nd of September 2017, the IceCube neutrino observatory
detected a track-like neutrino event with energy ~ 290 TeV
(IceCube-170922A). This neutrino event is spatially and
temporally associated with TXS 0506+056, a blazar at a
redshift of z=0.3365 which was in a flaring state in the
gamma-ray energy range at that very moment. Extensive
follow-up observations from radio to TeV energy bands
revealed that the blazar TXS 0506+056 was active during
this period and enhanced emission in all these energy bands
were observed, notably the GeV emission is found to be at
high state as observed by Fermi-LAT. Also for the first time
very high energy (VHE) gamma-rays above 100 GeV were observed
by MAGIC telescopes from the same object. In the context of
the photohadronic model I shall analyze this blazar to
explain the high energy gamma-ray and the neutrino spectra.
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