VLTI-GRAVITY observations of blazars
Talvikki Hovatta·Kaj Wiik·Heidi Korhonen·Preeti Kharb·M. Wittkowski·Aaron Labdon·Tapio Pursimo·Elina Lindfors
Parsec-scale jets of blazars have so far been spatially resolved only in millimeter and submillimeter wavelengths, where very long baseline interferometry can be used to obtain milliarcsecond-scale images of the jets. We have attempted to spatially resolve the near-infrared emission in jet-dominated blazars for the first time. We used the VLTI-GRAVITY instrument to obtain milliarcsecond-scale near-infrared interferometric observations of a flaring blazar Ton 599. Additionally, we observed four n