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Astrometric Apparent Motion of High-redshift Radio Sources

  • Authors: Oleg Titov, Sándor Frey, Alexey Melnikov, Fengchun Shu, Bo Xia, Javier González, Belén Tercero, Leonid Gurvits, Aletha de Witt, Jamie McCallum, Mikhail Kharinov, Vladimir Zimovsky, Máté Krezinger

Oleg Titov et al 2023 The Astronomical Journal 165 .

  • Provider: AAS Journals

Caption: Figure 3.

A 8.6 GHz VLBI image of 1508+572 obtained with a five-element global network of radio telescopes (Sv, Zc, Bd, Yb, Sh) on 2019 July 13 (project code RUA032). The peak brightness is 341 mJy beam−1, the lowest contours are at 0.812 mJy beam−1, the positive contour levels increase by a factor of 2. The elliptical Gaussian restoring beam indicated in the lower left corner has major and minor axes 0.837 mas and 0.707 mas (half-power beamwidth), respectively, with a major axis position angle −0.°4, measured from north through east. The mas-scale structure of the source is dominated by the bright core; a jet component is seen toward south.

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