PMID: 11607595Dec 5, 1995Paper

Morphology of high-luminosity compact radio sources

Proceedings of the National Academy of Sciences of the United States of America
J A ZensusA P Lobanov

Abstract

High-dynamic range imaging and monitoring with very-long-baseline interferometry reveal a rich morphology of luminous flat-spectrum radio sources. One-sided core-jet structures abound, and superluminal motion is frequently measured. In a few cases, both distinct moving features and diffuse underlying jet emission can be detected. Superluminal motion seen in such sources is typically complex, on curved trajectories or ridge lines, and with variable component velocities, including stationary features. The curved trajectories seen can be modeled by helical motion within the underlying jet flow. The very-long-baseline interferometry properties of the superluminal features in the jet of 3C 345 and other similar sources can be explained by models invoking the emission from shocks, at least within the vicinity of the compact core. Inverse-Compton calculations, constrained by x-ray observations, yield realistic estimates for the physical conditions in the parsec-scale jet. There is evidence for a transition region in this source beyond which other factors (e.g., plasma interactions and nonsynchrotron radiation processes) may become prominent. Multifrequency and polarization imaging (especially at high frequencies) are emerging as criti...Continue Reading

References

Sep 1, 1996·The Journal of the Acoustical Society of America·D W MassaroP M Smeele
Dec 5, 1995·Proceedings of the National Academy of Sciences of the United States of America·P N Wilkinson
Dec 5, 1995·Proceedings of the National Academy of Sciences of the United States of America·J A Biretta, W Junor
Dec 5, 1995·Proceedings of the National Academy of Sciences of the United States of America·T P KrichbaumJ A Zensus
Dec 5, 1995·Proceedings of the National Academy of Sciences of the United States of America·G B TaylorT J Pearson
Dec 5, 1995·Proceedings of the National Academy of Sciences of the United States of America·D C Gabuzda
Dec 5, 1995·Proceedings of the National Academy of Sciences of the United States of America·A P Marscher

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Citations

Dec 5, 1995·Proceedings of the National Academy of Sciences of the United States of America·M H Cohen, K I Kellermann
Dec 5, 1995·Proceedings of the National Academy of Sciences of the United States of America·G GiovanniniJ M Marcaide
Dec 5, 1995·Proceedings of the National Academy of Sciences of the United States of America·T P KrichbaumJ A Zensus
Dec 5, 1995·Proceedings of the National Academy of Sciences of the United States of America·R C Vermeulen
Dec 5, 1995·Proceedings of the National Academy of Sciences of the United States of America·D C Gabuzda

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