The Diverse Properties of GPS Sources

Details The Diverse Properties of GPS Sources The Diverse Properties of GPS Sources

2002-07-08

arxiv.org/abs/astro-ph/0207175v1

Astronomy and Astrophysics

Astrophysics

Proceedings of the 6th European VLBI Network Symposium, Ros E., Porcas R.W., Lobanov, A.P., & Zensus, J.A. (eds), MPIfR, Bonn,

Scientific paper

We discuss the morphology and kinematics of five gigahertz-peaked spectrum (GPS) sources that have been observed with the VLBA. We find a wide range of observed properties including core-jet structure, superluminal motion, variability, extended structure, and polarization, all of which appear to deviate from commonly-accepted GPS paradigms (e.g., O'Dea 1998). We suggest that the observed low frequency cutoff in GPS sources may be primarily due to free-free absorption rather than synchrotron self-absorption.

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