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The highest redshift radio quasar as seen with the EVN and the VLA

S. Frey·Z. Paragi·L. Mosoni·L. I. Gurvits
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Abstract

We report on European VLBI Network (EVN) and Very Large Array (VLA) observations of SDSS J0836+0054, the most distant radio-loud quasar known at present z=5.774). The source, with a total flux density of 1.1 mJy, shows a compact structure at 10 mas angular resolution at 1.6 GHz frequency, with no indication of multiple images produced by gravitational lensing within a 4x4 arcsec field above the brightness level of 100 microJy/beam. More recent 5 GHz EVN observations are being analysed now. As a by-product, a two-sided mas-scale jet structure is suspected in one of the phase-reference calibrator quasars, PKS 0837+012.

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S. Frey, Z. Paragi, L. Mosoni, L. I. Gurvits. 2004-12-29. The highest redshift radio quasar as seen with the EVN and the VLA. https://arxiv.org/abs/astro-ph/0412660

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