Compact galactic and extragalactic radio sources can be imaged with an unsurpassed angular resolution of a few ten micro-arcseconds, adopting the observing technique of global millimeter VLBI. Here, we present the Global Millimeter VLBI Array (GMVA) and discuss its present performance. We show and discuss new results obtained with the GMVA for individual and partially archetypal radio sources with prominent VLBI jets (e.g. 3C 120, Cygnus A, M87, 3C 454.3, NRAO150). The variety of observed effects range from jet propagation and bending, partial foreground absorption in the nucleus, and jet component ejection after major flares to new and very small (15-20 Schwarzschild radii) upper limits to the jet base of M87. We also discuss the future development of mm-VLBI at 3 mm and towards shorter wavelengths and make suggestions for possible improvements.
Proceedings of the 8th European VLBI Network Symposium
- Pub Date:
- 15 pages, 9 figures, to appear in the proceedings of `The 8th European VLBI Network Symposium on New Developments in VLBI Science and Technology', ed. A. Marecki et al., held in Torun, Poland, on September 26-29, 2006 (invited Review)