First 43-GHZ VLBI Detection of the Compact Source SAGITTARIUS-A* in the Galactic Center

Details First 43-GHZ VLBI Detection of the Compact Source SAGITTARIUS-A* in the Galactic Center First 43-GHZ VLBI Detection of the Compact Source SAGITTARIUS-A* in the Galactic Center

Jul 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993a%26a...274l..37k&link_type=abstract

Astronomy and Astrophysics, Vol. 274, NO. 3/JUL(III), P. L37, 1993

Astronomy and Astrophysics

Astrophysics

47

The Galactic Center, Interferometry, Jets Of Galaxies

Scientific paper

The Galactic Center radio source Sgr A* was detected for the first time with VLBI at 43 GHz. Observations made with four antennas of the Very Long Baseline Array suggest a size of the source exceeding that of a scatter-broadened unresolved object by a factor of 2-3. The data indicate that the structure is elongated along PA. = -25 ± 10°. A first image was made, with an angular resolution of ˜1 mas (corresponding to 8.5 AU at r0 = 8.5 kpc).

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