High - resolution radio imaging of the most distant radio quasar SDSS J 0836 + 0054
نویسندگان
چکیده
We observed SDSS J0836+0054, the most distant radio-loud quasar known at present (z = 5.774) with the European Very Long Baseline Interferometry (VLBI) Network at the 5 GHz frequency on 2003 November 4. The source is compact at the milli-arcsecond (mas) angular scale with a flux density of 0.34 mJy. The observations with the Very Large Array (VLA) made on the consecutive day support a conclusion that the radio emission from SDSS J0836+0054 is essentially confined within the central 40 pc. Based on our phase-referenced VLBI observation, we obtained the astrometric position of the source accurate to ∼ 2 mas.
منابع مشابه
Radio structure of the most distant radio-detected quasar at the ten milli-arcsecond scale
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