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| Paper: |
Three Decades of Very Long Baseline Interferometry Monitoring of the Parsec-Scale Jet in 3C 345 |
| Volume: |
427, Accretion and Ejection in AGN: a Global View |
| Page: |
153 |
| Authors: |
Schinzel, F. K.; Lobanov, A. P.; Zensus, J. A. |
| Abstract: |
The 16th magnitude quasar 3C 345 (redshift z=0.5928) shows structural
and emission variability on parsec scales around a compact unresolved
radio core. For the last three
decades it has been closely monitored with very long baseline
interferometry (VLBI), yielding a wealth of information about
the physics of relativistic
outflows and dynamics of the central regions in AGN. We present here
preliminary results for the long-term jet evolution, based on the
15 GHz monitoring data collected by the MOJAVE survey and various
other groups over the last ∼14 years and combined with data from earlier
VLBI observations of 3C 345 which started in 1979. We discuss the
trajectories, kinematics, and flux density evolution of enhanced
emission regions embedded in the jet and present evidence for
geometrical (e.g. precession) and physical (e.g. relativistic shocks
and plasma instability) factors determining the morphology and
dynamics of relativistic flows on parsec scales. |
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