Results from X-Ray Satellites

The statistical correlation alpha(ox) between the X-ray and optical luminosities of AGNs is examined, reviewing the results of recent satellite X-ray observations. Data are compiled in graphs, and consideration is given to the cosmic time evolution of the X-ray and optical luminosities, the skewedness of the alpha(ox) distribution, and the relationship of alpha(ox) to correlations between radio-quiet and radio-loud quasars or between IR and X-ray luminosities. The need for IR observations of high-red-shift objects with detected X-ray emission or X-ray upper limits is indicated.