New multi-epoch VLBA spectropolarimetry of Centaurus A constrains the subparsec jet inclination to under 25 degrees and finds a conical, constant-speed outflow at the jet base, plus a possible onset of acceleration farther downstream.
The TANAMI Program: Southern-Hemisphere AGN on (Sub-)parsec Scales
1 Pith paper cite this work. Polarity classification is still indexing.
1
Pith paper citing it
abstract
The Southern Hemisphere VLBI monitoring program TANAMI provides dual-frequency (8 GHz and 22 GHz), milliarcsecond monitoring of extragalactic jets south of -30 degrees declination. The TANAMI sample consists of a combined radio and gamma-ray selected subsample of currently 80 AGN jets, with new gamma-ray bright sources being added upon detections by Fermi/LAT. Supporting programs provide simultaneous multiwavelength coverage of all sources, in order to construct broadband spectral energy distributions (SEDs) of flaring and quiescence source states, as well as a rapid follow-up of high-energy flares. This combined setup allows us to continuously study the spectral and structural evolution of highly energetic extragalactic jets and test correlations in different wavebands, providing crucial information on underlying physical mechanisms. Here, we present jet kinematics of Centaurus A and show preliminary VLBI results on PKS 0625-354 and the time-dependent spectral index image of PKS 0537-441.
fields
astro-ph.HE 1years
2024 1verdicts
CONDITIONAL 1representative citing papers
citing papers explorer
-
The Subparsec-scale Structure and Evolution of Centaurus A. III. A Multi-Epoch Spectral And Polarimetric VLBA Study
New multi-epoch VLBA spectropolarimetry of Centaurus A constrains the subparsec jet inclination to under 25 degrees and finds a conical, constant-speed outflow at the jet base, plus a possible onset of acceleration farther downstream.