Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 1977
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977apj...214l..61k&link_type=abstract
Astrophysical Journal, Part 2 - Letters to the Editor, vol. 214, June 1, 1977, p. L61, L62.
Astronomy and Astrophysics
Astronomy
50
Galactic Nuclei, Interferometry, Radio Sources (Astronomy), Size Determination, Astronomical Models, Radiant Flux Density
Scientific paper
Very-long-baseline interferometer observations show that the compact radio source at the Galactic Center has dimensions of approximately 200 AU and that about 25% of the emission comes from a region only 10 AU across. There is no evidence for any expansion or contraction of this compact source, with a velocity of at least a few tens of kilometers per second.
Clark Barry Gillespie
Geldzahler Barry J.
Kellermann Kenneth I.
Shaffer David B.
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