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X-Ray Properties of Compact Extragalactic Radio Sources
Published online by Cambridge University Press: 03 August 2017
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A good correlation is known to exist between the X-ray and radio luminosity of flat-spectrum, core-dominated radio sources (e.g., Owen, Helfand and Spangler 1981). Worrall (1987) presents a logarithmic plot of spectral luminosity in the source frame at 2 keV versus that at 5 GHz for a variety of QSOs, Highly Polarized QSOs (HPQs), and BL Lac Objects. Friedmann cosmology with Ho = 100h km s−1 Mpc−1, qo = 0 is assumed. Exclusion of objects which are optically or X-ray selected, or in which the radio emission is not dominated by a flat-spectrum compact core, gives a sub-sample consisting of 50 QSOs, 20 HPQs, and 10 BL Lacs, of which 5,4,3, respectively, are known superluminals. The dispersion of these data about the log-log correlation (assuming a Gaussian distribution), is σobs = 0.44 ± 0.06 (90% confidence errors for one interesting parameter).
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- Extragalactic
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- Copyright
- Copyright © Reidel 1988
References
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1987, in Superluminal Radio Sources, ed. Zensus, J.A., and Pearson, T.J. (Cambridge: Cambridge University Press), p. 233.Google Scholar
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1987, in Superluminal Radio Sources, ed. Zensus, J.A., and Pearson, T.J. (Cambridge: Cambridge University Press), p. 251.Google Scholar
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