High-Energy Emissions from Low-Luminosity Active Galactic Nuclei

Low-luminosity active galactic nuclei (LLAGNs) are characterized by low accretion rates and often misaligned jets. Due to their faintness, the high-energy (HE) properties of these sources remain less explored than those of their brighter counterparts. Multi-wavelength observations of their jets serve as a crucial probe into the physical mechanisms in these extreme environments. Recent advancements in gamma-ray observations by Fermi-LAT have significantly improved our understanding. I will present a detailed broadband study of two faint gamma-ray emitters, NGC 315 and NGC 4261, which hints at extended gamma-ray emissions, previously only known in two bright radio galaxies. Additionally, I will discuss temporal SED variations in another LLAGN, M81*, which shows behavior similar to high-synchrotron-peaked blazars, suggesting a potential universal jet mechanism across AGN luminosities. Finally, I will touch upon very high energy (VHE) emissions from radio galaxies despite their modest Doppler factors, with the possibility of extending the sample of misaligned VHE emitters using the present facilities like Fermi-LAT. I will conclude with insights on their implications for VHE emission processes and AGN jet physics.