Parsec-scale properties of the peculiar gigahertz-peaked spectrum quasar 0858-279
N. A. Kosogorov,
Y. Y. Kovalev,
M. Perucho
et al.
Abstract:We performed multi-frequency studies on the gigahertz-peaked spectrum high-redshift quasar 0858−279. Initially, the source presented itself at early VLBI images as a very peculiar resolved blob. We observed the quasar with the VLBA at 1.4−24 GHz in dual-polarization mode. The high spatial resolution and spectral index maps enabled us to resolve the core-jet structure and locate a weak and compact core by its inverted spectrum. The dominant jet component 20 parsecs away from the core was found to be optically t… Show more
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