We present very long baseline interferometry (VLBI) images of ten very high redshift (z>3) quasars at 5 GHz. The sources 0004+139, 0830+101, 0906+041, 0938+119 and 1500+045 were observed in September 1992 using a global VLBI array, while 0046+063, 0243+181, 1338+381, 1428+423 and 1557+032 were observed in October 1996 with the European VLBI Network and Hartebeesthoek, South Africa. Most of the sources are resolved and show asymmetric structure. The sample includes 1428+423, the most distant radio loud quasar known to date (z=4.72). It is barely resolved with an angular resolution of about 2.0*1.4 mas.
@article{arxiv.astro-ph/9901396,
title = {VLBI imaging of extremely high redshift quasars at 5 GHz},
author = {Z. Paragi and S. Frey and L. I. Gurvits and K. I. Kellermann and R. T. Schilizzi and R. G. McMahon and I. M. Hook and I. I. K. Pauliny-Toth},
journal= {arXiv preprint arXiv:astro-ph/9901396},
year = {2011}
}
Comments
Astronomy and Astrophysics, in press, Latex2e, 10 pages, 3 figures (and lots of sub-figures)