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VLBI Studies of Tanami Radio Galaxies

Authors: R. Angioni, F. Rösch, E. Ros, M. Kadler, R. Ojha, C. Müller, R. Schulz

Journal: Transactions of IAA RAS vol. 41

Pages: 3 - 8

Year: 2017

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About the paper

Keywords: VLBI, AGN, γ-rays, Radio galaxies

Radio galaxies are relatively faint at γ-ray energies, where they make up only 1–2% of all AGN detected by Fermi-LAT. However, they offer a unique perspective to study the intrinsic properties of AGN jets. For this reason, the combination of γ-ray and multi-wavelength data with high-resolution VLBI monitoring is a powerful tool to tackle the basic unanswered questions about AGN jets. Here we present preliminary results from a sample study of radio galaxies in the Southern hemisphere observed by the TANAMI VLBI monitoring program. We obtain highresolution maps at 8.4 and 22.3 GHz, and study the jet kinematics using multi-epoch data. We present a preliminary kinematic analysis for the peculiar γ-ray AGN PKS 0521−36.