A VLBI Search for the Origin of Wobbling in Blazar Jets
I. Agudo (Instituto de Astrofisica de Andalucia (CSIC), Granada,, Spain)

TL;DR
This study uses long-term VLBA polarimetric observations at 43 GHz to investigate the origin of jet wobbling in four blazars, aiming to understand the inner jet dynamics and their relation to supermassive black hole activity.
Contribution
It introduces a dedicated VLBA monitoring program targeting jet wobbling in blazars, providing new observational data to explore its physical origins and implications.
Findings
Identification of large amplitude jet wobbling in selected blazars
Characterization of the jet structure and core motion over time
Assessment of the program's potential for future high-resolution observations
Abstract
An increasing number of blazars have been reported to show jet wobbling (i.e., non-regular rotations of the structural position angle of their innermost jets in the plane of the sky with amplitudes between 20 deg. and 50 deg., and time scales between 2 yr. and 20 yr.). The physical origin for the observed jet wobbling is still poorly understood, but as this phenomenon is triggered in the innermost regions of the jets, it must be tied to fundamental properties of the inner regions of the accretion system. Thus, jet wobbling may be an interesting potential tool for supermassive black hole, accretion and jet launching studies. As part of a joint theoretical/numerical and observational effort to characterize the observational properties and differences between these three possible scenarios we have started a long-term polarimetric phase-reference 43 GHz VLBA monitoring program to observe…
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Taxonomy
TopicsSolar and Space Plasma Dynamics · Astrophysics and Cosmic Phenomena · Geophysics and Gravity Measurements
