Astronomy and Astrophysics – Astronomy
Scientific paper
Feb 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981apj...243l.123b&link_type=abstract
Astrophysical Journal, Part 2 - Letters to the Editor, vol. 243, Feb. 1, 1981, p. L123-L126. Research supported by the Statens N
Astronomy and Astrophysics
Astronomy
33
Centimeter Waves, Quasars, Radiant Flux Density, Very Long Base Interferometry, High Resolution, Radio Astronomy, Spectral Energy Distribution
Scientific paper
High-resolution VLBI observations made at a frequency of 22.235 GHz of the quasar 3C 345 are discussed. Antennas located at the Crimean Astrophysical Observatory, USSR; Onsala, Sweden; Effelsberg, West Germany; and the Haystack Observatory, Massachusetts were employed at 4-min integration times to provide baselines ranging up to 5.5 x 10 to the 8th wavelengths. About 40% of the total flux density of 7.85 Jy, observed in November 1977, and 8.05 Jy, observed in October 1978, is found to originate in an unresolved component of the quasar core in a region less than 0.1 milliarcsec in diameter. The elongated jet-like component of the quasar is observed to contain several peaks of emission extending up to 6 milliarsec from the core which decreased in extent between the two observations.
Baath Lars B.
Kellermann Kenneth I.
Kogan Leonid R.
Kostenko V. I.
Matveenko Leonid I.
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