The Subparsec-scale Structure and Evolution of Centaurus A. III. A Multi-epoch Spectral and Polarimetric VLBA Study

The Centaurus A radio galaxy, due to its proximity, presents itself as one of the few systems that allow the study of relativistic jet outflows at subparsec distances from the central supermassive black holes, with high signal to noise. We present the results from the first multi-epoch spectropolari...

Full description

Saved in:
Bibliographic Details
Published in:The Astronomical journal 2025-01, Vol.169 (1), p.37
Main Authors: Prabu, S., Tingay, S. J., Bahramian, A., Miller-Jones, J. C. A., Wood, C. M., O’Sullivan, S. P.
Format: Article
Language:English
Subjects:
Acceleration
Active galactic nuclei
Black holes
Galaxies
Inclination angle
Interferometers
Interferometry
Kinematics
Outflow
Polarimetry
Radio galaxies
Radio signals
Relativistic jets
Supermassive black holes
Very long base interferometry
Very long baseline interferometry
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The Centaurus A radio galaxy, due to its proximity, presents itself as one of the few systems that allow the study of relativistic jet outflows at subparsec distances from the central supermassive black holes, with high signal to noise. We present the results from the first multi-epoch spectropolarimetric observations of Centaurus A at milliarcsecond resolution, with a continuous frequency coverage of 4.59−7.78 GHz. Using a Bayesian framework, we perform a comprehensive study of the jet kinematics, and discuss aspects of the jet geometry, including the jet inclination angle, jet opening angle, and the jet expansion profile. We calculate an upper limit on the jet’s inclination to the line of sight to be
ISSN:0004-6256
1538-3881
DOI:10.3847/1538-3881/ad91a5