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Millimeter VLBI of NGC 1052: Dynamics
oleh: Anne-Kathrin Baczko, Robert Schulz, Eduardo Ros, Matthias Kadler, Manel Perucho, Jörn Wilms
Format: | Article |
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Diterbitkan: | MDPI AG 2016-10-01 |
Deskripsi
The LINER galaxy NGC 1052 is an ideal target to study the innermost regions of active galactic nuclei (AGN), given its close distance of about 20 Mpc. The source was observed at 29 epochs from 2005 to 2009 with the Very Long Baseline Array (VLBA) at 43 GHz. Here, we present a kinematic study of its twin-jet system from a subset of 9 epochs at 43 GHz carried out in 2005 and 2006, finding a bright central feature as the dynamic center. The resulting mean velocities of β = v / c = 0 . 46 ± 0 . 08 and β = 0 . 69 ± 0 . 02 for the western and eastern jet, respectively, give hints towards higher velocities in the eastern jet.