Speaker
Description
The role of active galactic nuclei in the production of high-energy neutrinos is crucial in the understanding of the excess of neutrinos seen by the IceCube observatory in the direction of the blazar TXS 0506+056 and the Seyfert galaxy NGC 1068. In particular blazars jets are potential sites of cosmic-ray acceleration, where neutrino production would be naturally explained along with the interaction of hadrons.
The blazar 5BZQ J0808+4950 is part of a blazar sample that has been highlighted as spatially correlated with neutrino hotspots in IceCube sky maps. In addition, a neutrino event, IC110929, was also reported in the direction of this blazar. With a luminous accretion disk serving as a photon field for the photo-hadronic interactions, 5BZQ J0808+4950, is a good candidate to test the relation between neutrino production and the radiative output of the blazar jet. We studied six contemporaneous epochs in which multi-wavelength data were available, in order to model the source's spectral energy distribution and its evolution over time. We find that the source exhibits two different gamma-ray states over the six epochs we consider.
We use lepto-hadronic models to model time-dependently 5BZQ J0808+4950, and find two types of solutions corresponding to the two gamma-ray states. The main variations between the six states are in the magnetic field strength and the spectrum of the injected primary particles. We predict a neutrino rate ranging from 0.01 to 0.04 neutrino per year, with the highest rate contemporaneous with the neutrino event observation.
