17.12.2021
The Neutrino Telescope at Lake Baikal has detected a signal from a radio blazar flare
On 8 December 2021, scientists from the IceCube Neutrino Observatory at the South Pole announced the observation of a track, a candidate for the astrophysical neutrino with an estimated energy of about 172 TeV. One of the brightest radio blazars in the sky, PKS 0735+17, is located in the region where the neutrino was presumably born (considering the direction of the incoming particle). The event stands out since this is the most powerful radio blazar flare in the gamma and visible ranges in the entire history of observations of this blazer. Also, its X-ray brightness increased, and the radio burst started. The coincidence between neutrino detection time and such a powerful blazar flare is the second one in the entire history of IceCube observations.