Dissecting the region around IceCube-170922A: the blazar TXS 0506+056 as the first cosmic neutrino source

Sem informaçãoOn MJD 58018 the IceCube neutrino observatory detected a highly energetic, well-reconstructed neutrino, IceCube-170922A, at a distance of 0.1 degrees to a gamma-ray flaring blazar, TXS 0506+056. Follow-up searches in archival data additionally revealed a larger flare of neutrinos from the same direction. In order to complete the picture we present here a full multi-wavelength study of the region around IceCube-170922A. While we identify also other non-thermal counterpart candidates, we show that all the evidence points to TXS 0506+056 as the dominant neutrino emitter. Additionally, an analysis of all the available Fermi-LAT data indicates a hard spectrum/low flux of TXS 0506+056 during the neutrino flare in contrast to a soft spectrum/high flux at the arrival time of IceCube-170922A. Putting all the pieces together we conclude that the SED of TXS 0506+056 can be energetically reconnected for both neutrino observations.20715Sem informaçãoSem informaçãoSem informação8. Conference on Very Large Volume Neutrino Telescopes02 a 04 de Outurbro de 2018Dubna, RussiaJoint Institute for Nuclear Research Dubna; The International Union of Pure and Applied Physics & Hamamatsu Photo