Hadronic processes as origin of TeV emission in Fanaroff-Riley Class I: Cen A, M87 and NGC1275

Understand

Recent detections of Fanaroff-Riley Class I AGNs by HESS, MAGIC, and VERITAS suggest that very-high-energy gamma-rays (VHE, E > 100 GeV) may not have a leptonic origin.

• We present a hadronic model to describe the TeV photons as the neutral pion decay resulting from pgamma and pp interactions.
• For the pgamma interaction, we assume that the target photons are produced by leptonic processes and apparent at the second spectral peak.
• For the pp interaction we consider as targets the thermal particle densities in the lobes.