High-energy cosmic neutrinos from spine-sheath BL Lac jets

Understand

We recently proposed that structured (spine-sheath) jets associated to BL Lac objects offer a suitable environment for the production of the extragalactic high-energy ($E>100$ TeV) neutrino recently revealed by IceCube.

• Our previous analysis was limited to low-power BL Lac objects.
• We extend our preliminary study to the entire BL Lac population.
• We assume that the power of cosmic rays as well as the radiative luminosity of the sheath depend linearly on the the jet power.