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Radio and optical observations of “optically quiet quasars”

Published online by Cambridge University Press:  19 July 2016

W. D. Cotton ,
F. N. Owen  and
M. J. Mahoney
W. D. Cotton
Affiliation:
National Radio Astronomy Observatory
F. N. Owen
Affiliation:
National Radio Astronomy Observatory
M. J. Mahoney
Affiliation:
Clark Lake Radio Observatory

Extract

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In recent years a number of very steep spectrum, compact radio sources have been discovered (e.g. Cotton 1983, Cotton and Owen 1985, Ulvestad 1985) which have no optical counterpart to the limit of the Palomar Sky Survey. VLBI observations of a number of these have confirmed the very compact (<10 mas) nature of several of these sources. Analysis of the available data in terms of the standard synchrotron modal suggest that they contain very weak magnetic fields, large particle densities and may emit detectable infrared and optical emission by inverse Campton scattering in the compact radio source (Cotton 1983). This paper will report on an analysis including new VLBI observations, infrared and optical imaging at KPNO and low frequency radio observations at CLRO of a number of these objects.

Type
II. Continuum Emission
Information
Symposium - International Astronomical Union , Volume 119: Quasars , 1986 , pp. 113 - 115
Copyright
Copyright © Reidel 1986 

References

Cotton, W. D., 1963, Ap. J., 271, 51.Google Scholar
Cotton, W. D. and Owen, F. N., 1985, unpublished results.Google Scholar
Marscher, A. P. 1963, Ap. J., 264, 296.CrossRefGoogle Scholar
Ulvestadt, J. M., 1965, Ap. J., 288, 514.Google Scholar