Signatures of blazar spectra in the electromagnetic and hadronic intergalactic cascade models

Аннотация

There are indications that a secondary component of cascade photons is present in the spectra of some bright blazars. The main spectral signatures are considered using the electromagnetic model. The simplest version of the hadronic cascade model can be distinguished from the electromagnetic cascade at a significance level of ~3 σ for a typical observation of a blazar at the Cherenkov Telescope Array (CTA).