The first measurement of the Galactic aberration by the VLBI
Résumé
This paper reports on the detection of the Galactic aberration in astrometric measurements of quasar positions by very long baseline radio interferometry (VLBI). The Galactic aberration effect shows up as a dipole component in the quasar proper motion field, oriented towards the Galactic center. The dipole amplitude is in good agreement with theoretical predictions.