International audienceHigh-resolution imaging is crucial for exploring the origin and mechanism of radio emission in quasars, especially at high redshifts. We present 1.5 GHz Very Long Baseline Array (VLBA) images of the radio continuum emission from the radio-intermediate quasar (RIQ) J2242+0334 at z = 5.9. This object was previously detected at both 1.5 GHz and 3 GHz with the Karl G. Jansky Very Large Array (VLA) as a point source. However, there is no clear detection in the VLBA images at both the full resolution of 10.7 mas × 4.5 mas (61.7 pc × 26.0 pc) and a tapered resolution of 26 mas × 21 mas (150 pc × 121 pc). This suggests that the radio emission from the quasar is diffuse on milliarcsecond scales with surface brightness fainter t...
We present a deep image of the optically powerful quasar E1821+643 at 18 cm made with the Very Large...
We report deep Karl G. Jansky Very Large Array (VLA) observations of the optically ultraluminous and...
We present the first milli-arcsecond resolution radio images of a radio-quiet quasar, detecting a hi...
High-resolution imaging is crucial for exploring the origin and mechanism of radio emission in quasa...
We report Very Long Baseline Array (VLBA) observations of the 1.5 GHz radio continuum emission of th...
Context. Radio-loud active galactic nuclei in the early Universe are rare. The quasars J0906+6930 at...
We report Very Long Baseline Array (VLBA)observations of the 1.5 GHz radio continuum emission of the...
We report Very Long Baseline Array (VLBA)observations of the 1.5 GHz radio continuum emission of the...
We present a deep image of the optically-powerful quasar E1821+643 at 18cm made with the Very Large ...
We present a deep image of the optically-powerful quasar E1821+643 at 18cm made with the Very Large ...
Context. Until now, there have only been seven quasars at z > 4.5 whose the high-resolut...
We present high angular resolution imaging (23.9 × 11.3 mas, 138.6 × 65.5 pc) of the radio-loud quas...
Context. Until now, there have only been seven quasars at z > 4.5 whose the high-resolut...
Context. The nature of jets in active galactic nuclei (AGNs) in the early Universe and their feedbac...
Context. Until now, there have only been seven quasars at z > 4.5 whose the high-resolut...
We present a deep image of the optically powerful quasar E1821+643 at 18 cm made with the Very Large...
We report deep Karl G. Jansky Very Large Array (VLA) observations of the optically ultraluminous and...
We present the first milli-arcsecond resolution radio images of a radio-quiet quasar, detecting a hi...
High-resolution imaging is crucial for exploring the origin and mechanism of radio emission in quasa...
We report Very Long Baseline Array (VLBA) observations of the 1.5 GHz radio continuum emission of th...
Context. Radio-loud active galactic nuclei in the early Universe are rare. The quasars J0906+6930 at...
We report Very Long Baseline Array (VLBA)observations of the 1.5 GHz radio continuum emission of the...
We report Very Long Baseline Array (VLBA)observations of the 1.5 GHz radio continuum emission of the...
We present a deep image of the optically-powerful quasar E1821+643 at 18cm made with the Very Large ...
We present a deep image of the optically-powerful quasar E1821+643 at 18cm made with the Very Large ...
Context. Until now, there have only been seven quasars at z > 4.5 whose the high-resolut...
We present high angular resolution imaging (23.9 × 11.3 mas, 138.6 × 65.5 pc) of the radio-loud quas...
Context. Until now, there have only been seven quasars at z > 4.5 whose the high-resolut...
Context. The nature of jets in active galactic nuclei (AGNs) in the early Universe and their feedbac...
Context. Until now, there have only been seven quasars at z > 4.5 whose the high-resolut...
We present a deep image of the optically powerful quasar E1821+643 at 18 cm made with the Very Large...
We report deep Karl G. Jansky Very Large Array (VLA) observations of the optically ultraluminous and...
We present the first milli-arcsecond resolution radio images of a radio-quiet quasar, detecting a hi...