Multi-wavelength observations of 3C 273. II. 1986-1988.
Bouchet, P.; Falomo, R.; Walter, R.; Wamsteker, W.; Staubert, R.; Robson, E. I.; Turner, M. J. L.; Valtaoja, E.; Terasranta, H.; Courvoisier, T. J. L.; Blecha, A.; Maisack, M.
Switzerland, United Kingdom, Chile, Italy
Abstract
Multi wavelength observations of 3C273 started in 1983. Since then data have been obtained from the radio end of the spectrum to the X-rays at more or less regular intervals. The sampling of the radio, near IR, visible and UV domains has greatly improved since 1985 and 1986, allowing useful cross-correlation analysis of the different components. A wide variety of behaviours is shown, even within single wavebands. The main emerging global features are a first link between thermal (UV) and non- thermal (radio) activities, a strong decoupling of the X-ray emission from all other emission components, a close connection between the UV and optical light curves (excluding the non-thermal flaring activity) and the stability of the quiescent near infrared emission.