Multi-epoch VLBA observations of 3C 66A
Abstract
We present the results of six-epoch Very Long Baseline Array (VLBA) observations of 3C~66A. The high-resolution Very Long Baseline Interferometer (VLBI) maps obtained at multi-frequency (2.3, 8.4, and 22.2 GHz) simultaneously enabled us to identify the brightest compact component with the core. We find that the spectrum of the core can be reasonably fitted by the synchrotron self-absorption model. Our VLBA maps show that the jet of 3C~66A has two bendings at about 1.2 and 4 mas from the core. We also give possible identifications of our jet components with the components in previous VLBA observations by analysing their proper motions. We find consistent differences of the position from the core in one component between different frequencies at six epochs.
Keywords
Cite
@article{arxiv.0704.2722,
title = {Multi-epoch VLBA observations of 3C 66A},
author = {H. -B. Cai and Z. -Q. Shen and H. Sudou and L. -L. Shang and S. Iguchi and Y. Murata and Y. Taniguchi and K. Wakamatsu and H. Takaba},
journal= {arXiv preprint arXiv:0704.2722},
year = {2009}
}
Comments
10 pages, 5 figures, received 30 January 2007, accepted 22 March 2007