A Statistical Study of the Relationship Between X-Ray Optical and Radio Luminosity for a Sample of QSOs

The authors' statistical study finds that the X-ray luminosity, l_x, for an average QSO of given optical luminosity, l_o, is an increasing function of radio luminosity, l_r. An average QSO of given l_o and l_r has higher l_x if the radio spectrum is flat than if it is steep. The correlation between l_x, l_o and l_r is discussed in detail.