Gamma-Rays from Non-Blazar AGN

Abstract

Non-blazar Active Galactic Nuclei (AGN) have emerged as a new gamma-ray emitting source class on the extragalactic sky and started to deepen our understanding of the physical processes and the nature of AGN in general. The detection of Narrow Line Seyfert 1 galaxies in the Fermi-LAT energy regime, for example, offers important information for our understanding of jet formation and radio-loudness. Radio galaxies, on the other hand, have become particularly interesting at high (HE) and very high (VHE) gamma-ray energies. With their jets not directly pointing towards us (i.e. misaligned), they offer a unique tool to probe into the nature of the fundamental (and often hidden) physical processes in AGN. This review highlights and discusses some of the observational and theoretical progress achieved in the gamma-ray regime during recent years, including the evidence for unexpected spectral hardening in Centaurus A and extreme short-term variability as seen in IC 310 and M87.

Invited review paper for the 6th Symposium on High Energy Gamma-Ray Astronomy, to appear in AIP Conference Proc., 11 pages, 6 figures

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Cited by in corpus (6)

• Radio Galaxies at VHE energies
• A search for Centaurus A-like features in the spectra of Fermi-LAT detected radio galaxies
• High-Energy Gamma Rays and Neutrinos from Nearby Radio Galaxies
• A plausible link between dynamically unsettled molecular gas and the radio jet in NGC 6328
• The origin of the very-high-energy radiation along the jet of Centaurus A
• Recent advances on multimessenger astrophysics: Centaurus A, GW 170817, and KM3-230213A