Speaker
Mr
Roberto Angioni
(Max-Planck Institut für Radioastronomie)
Description
The γ-ray sky is strongly dominated by blazars, i.e. AGN with relativistic jets oriented closely with our line of sight. Radio galaxies are their misaligned counterparts, and make up about ∼ 1-2% of all AGN observed by Fermi-LAT. At TeV energies, only 5 radio galaxies have currently been detected, but recent work has shown that the CTA has good potential for detecting more of these elusive Very-High-Energy sources. In spite of their small numbers in $\gamma$-ray catalogs, radio galaxies provide us with a view of AGN jets which is less biased by Doppler boosting effects, and allow us to test jet production and emission models in light of the unified scheme of radio-loud AGN. The combination of γ-ray data and high-resolution Very Long Baseline Interferometry (VLBI) studies is a powerful tool in order to investigate these objects. We present selected results of an ongoing study focused on the radio galaxies in the southern-hemisphere VLBI (and multi-wavelength) monitoring program TANAMI.
Primary author
Mr
Roberto Angioni
(Max-Planck Institut für Radioastronomie)
Co-authors
Dr
Cornelia Mueller
(Radboud Uni. Nijmegen)
Prof.
Eduardo Ros
(MPI für Radioastronomie & Univ. de València)
Prof.
Matthias Kadler
(Uni. Wuerzburg)
Dr
Roopesh Ojha
(NASA GSFC)
