VLBI observations at 147 GHz: first detection of transatlantic fringes in bright AGN

T. P. Krichbaum; D. A. Graham; W. Alef; A. Polatidis; U. Bach; A. Witzel; J. A. Zensus; A. Greve; M. Grewing; S. Doeleman; R. Phillips; A. E. E. Rogers; M. Titus; H. Fagg; P. Strittmatter; T. L. Wilson; L. Ziurys; R. Freund; P. K"on"onen; J. Peltonen; S. Urpo; F. Rantakyro; J. Conway; R. S. Booth

arXiv · astro-ph/0207022

VLBI observations at 147 GHz: first detection of transatlantic fringes in bright AGN

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Abstract

At 147 GHz (2mm wavelength), we detected three prominent AGN (NRAO150, 3C279, 1633+382) with Very Long Baseline Interferometry (VLBI) with an angular resolution of only 18 micro-arcseconds on the baseline between two antennas in Arizona (10m HHT and 12m KittPeak) and the IRAM 30m antenna on Pico Veleta in Spain. This is a new world record in radio interferometry and astronomical imaging and opens fascinating future possibilities to directly image and study the innermost regions in Quasars and other Active Galactic Nuclei.

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T. P. Krichbaum, D. A. Graham, W. Alef, A. Polatidis, U. Bach, A. Witzel, J. A. Zensus, A. Greve, M. Grewing, S. Doeleman, R. Phillips, A. E. E. Rogers, M. Titus, H. Fagg, P. Strittmatter, T. L. Wilson, L. Ziurys, R. Freund, P. K"on"onen, J. Peltonen, S. Urpo, F. Rantakyro, J. Conway, R. S. Booth. 2002-07-01. VLBI observations at 147 GHz: first detection of transatlantic fringes in bright AGN. https://arxiv.org/abs/astro-ph/0207022

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