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A statistical study of the relationship between X-ray, optical and radio luminosity for a sample of QSOs

Published online by Cambridge University Press:  19 July 2016

D.M. Worrall ,
P. Giommi ,
H. Tananbaum  and
G. Zamorani
D.M. Worrall
Affiliation:
Harvard-Smithsonian Center for Astrophysics, Cambridge, MA, U.S.A.
P. Giommi
Affiliation:
EXOSAT Observatory, ESA-ESOC, Darmstadt, F.R.G.
H. Tananbaum
Affiliation:
Harvard-Smithsonian Center for Astrophysics, Cambridge, MA, U.S.A.
G. Zamorani
Affiliation:
Istituto di Radioastronomia, Bologna, Italy

Abstract

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Our statistical study finds that the X-ray luminosity, lx for an average QSO of given optical luminosity, lo is an increasing function of radio luminosity, lr . An average QSO of given lo and lr has higher lx if the radio spectrum is flat than if it is steep. The correlation between lx , lo and lr appears to be improved if lr refers only to core emission, lrcore . Assuming an average radio-loud QSO is a radio-quiet QSO with a separate component which produces lrcore and Ixcore , lxcore /lrcore is larger if the core is that of a QSO with extended radio structure than if that of a compact flat-spectrum QSO.

Information

Type
II. Continuum Emission
Information
Symposium - International Astronomical Union , Volume 119: Quasars , 1986 , pp. 263 - 264
Copyright
Copyright © Reidel 1986 

References

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