Aligned and misaligned AGNs: Results from recent studies and implication on the AGN unification model

Dr. Debbijoy Bhattacharya
Manipal Centre for Natural Sciences, Manipal Academy of Higher Education

Blazars are one of the brightest persistent gamma-ray sources in the universe. The sub-parsec/parsec scale jet is the primary site of origin of gamma rays in blazars. As the emission from jets falls off rapidly with increasing jet inclination angle, AGN with large inclination angle (misaligned AGN) are expected to be weak gamma-ray emitters. The location and underlying physical processes responsible for observed high energy emissions in these sources are still debatable. We have carried out a detailed study of a few aligned (3C 66A, 4C+21.35, PKS 0208-512) and misaligned AGNs (3C 380, Pictor A, NGC 1275) utilising more than a decade-long observations with Fermi and other ground and space-based observatories. Here, I will present how our findings provide a better understanding of the origin of high energy emissions in these galaxies. The observed similarities/differences in properties of emission regions in on-axis and misaligned AGN will also be discussed in the context of the AGN unification scheme.