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

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

2004-12-29

arxiv.org/abs/astro-ph/0412660v1

Astronomy and Astrophysics

Astrophysics

4 pages. 6 figures. Proceedings of the 7th European VLBI Network Symposium held in Toledo, Spain on October 12-15, 2004. Edito

Scientific paper

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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