Very long baseline interferometry at a wavelength of 3.4 mm

Details Very long baseline interferometry at a wavelength of 3.4 mm Very long baseline interferometry at a wavelength of 3.4 mm

Jun 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983natur.303..504r&link_type=abstract

Nature (ISSN 0028-0836), vol. 303, June 9, 1983, p. 504-506. Research supported by the University of California, NSF, and NASA.

Astronomy and Astrophysics

Astronomy

21

Millimeter Waves, Radio Astronomy, Very Long Base Interferometry, Galactic Nuclei, Galactic Structure, Radio Sources (Astronomy)

Scientific paper

The first detection of interference fringes by VLBI at a wavelength of 3.4 mm during observations of 3C84 are reported. The compact source in the nucleus of 3C84 was observed for a 9-hr period on the 485 km baseline between the Owens Valley Radio Observatory and the Hat Creek Observatory. The fringe data are given and the derivation of the correlated flux densities is described. The findings are discused in the context of previous obervations. The results demonstrate that there are no unforeseen technical difficulties associated with millimeter VLBI, and that the sensitivity of existing systems is sufficient to observe objects brighter than a few Jy. The observations are consistent with the millimeter wavelength radio structure of 3C84 being more compact than its centimeter wavelength structure.

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