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Multi-Frequency VLBI Observations of GHz-Peaked Spectrum Sources

S. Kameno·M. Inoue·Z. -Q. Shen·S. Sawada-Satoh·K. Wajima
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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.

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S. Kameno, M. Inoue, Z. -Q. Shen, S. Sawada-Satoh, K. Wajima. 2004-12-30. Multi-Frequency VLBI Observations of GHz-Peaked Spectrum Sources. https://arxiv.org/abs/astro-ph/0412674

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