Astronomy and Astrophysics – Astronomy
Scientific paper
Mar 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989apj...338...37c&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 338, March 1, 1989, p. 37-43.
Astronomy and Astrophysics
Astronomy
6
Astronomical Spectroscopy, Emission Spectra, Infrared Astronomy, Radio Sources (Astronomy), Visual Photometry, Charge Coupled Devices, Compton Effect, Radiant Flux Density, Radio Emission, Very Long Base Interferometry
Scientific paper
The previous interpretation of the radio size and spectrum of several steep-spectrum, compact, optically weak radio sources in terms of a stationary synchrotron model predicted substantially more inverse Compton optical emission than was observed. This paper presents extensive optical and radio observations which reveal a more complex structure than was assumed in the previous analysis. A more conservative analysis suggests that current data are consistent with a standard synchrotron model with relativistic bulk motions not exceeding those needed to explain apparent superluminal motions in other sources.
Cotton William D.
Mahoney Matthew J.
Owen Frazer N.
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