Multi-messenger signatures of magnetically dominated baryon-loaded blazar jets

Blazars are a rare class of active galactic nuclei (AGN) with relativistic jets pointing towards the observer. In this contribution, we present a simple, yet physically motivated, model for blazar emission. According to this, electrons and protons are energized via magnetic reconnection in parts of the jet where the plasma magnetization is still high (σ>1). The magnetization σ and bulk Lorentz factor Γ are related to the available jet energy per baryon, μ. We also adopt an observationally motivated relation between Γ and the mass accretion rate, which controls the luminosity of external radiation fields. I will present our results about the photon and neutrino jet emission as a function of the fundamental parameters μ, σ, and Γ, and discuss their implications about the contribution of the blazar population to the astrophysical neutrino flux measured by IceCube