Long-baseline interferometry with a portable antenna at 81.5 MHz

Details Long-baseline interferometry with a portable antenna at 81.5 MHz Long-baseline interferometry with a portable antenna at 81.5 MHz

Nov 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983mnras.205..625h&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 205, Nov. 1983, p. 625-636.

Astronomy and Astrophysics

Astronomy

16

Astronomical Spectroscopy, Radio Antennas, Radio Sources (Astronomy), Very Long Base Interferometry, Antenna Arrays, Astronomical Maps, Atmospheric Attenuation, Emission Spectra, Ionospheric Electron Density, Portable Equipment

Scientific paper

The authors have observed four bright radio sources with a single interferometer of variable spacing to investigate the feasibility of mapping sources with sub-arcsecond resolution at metre wavelengths. The interferometer consisted of the Cambridge 36000-m2 array together with a portable outstation which the authors used on 11 baselines from 0.5 to 1500 km. The measurements of the fringe visibility function show that a large proportion of the emission from otherwise compact radio sources originates in extended structure which, in the cases of 3C 48 and 216, may be several hundred kiloparsecs in extent.

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