Multi-Frequency VLBI Observations of GHz-Peaked Spectrum Sources
Astrophysics
2007-05-23 v1
Abstract
We report results of pentachromatic VLBI survey for 18 GHz-peaked spectrum sources. Spectral fitting at every pixel across five frequencies allows us to illustrate distribution of optical depth in terms of free-free absorption or synchrotron self absorption. Quasars and Seyfert 1 sources show one-sided morphology with a core at the end where the optical depth peaks. Radio galaxies and Seyfert 2 show symmetric double-sided jets with a optically thick core at the center.
Keywords
Cite
@article{arxiv.astro-ph/0412674,
title = {Multi-Frequency VLBI Observations of GHz-Peaked Spectrum Sources},
author = {S. Kameno and M. Inoue and Z. -Q. Shen and S. Sawada-Satoh and K. Wajima},
journal= {arXiv preprint arXiv:astro-ph/0412674},
year = {2007}
}
Comments
2 pages. 3 figures. Proceedings of the 7th European VLBI Network Symposium held in Toledo, Spain on October 12-15, 2004. Editors: R. Bachiller, F. Colomer, J.-F. Desmurs, P. de Vicente (Observatorio Astronomico Nacional), p. 157-158. Needs evn2004.cls