Abstract
It is proposed to carry out an observational test of the hypothesis that active galactic nuclei contain a massive black hole, surrounded by an accretion disk as an energy source. The observational program included 64 objects, selected according the Aldrovandi's model.
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Petrov, G.T. A proposed program of observations of extragalactic X-ray sources. Astrophys Space Sci 148, 305–341 (1988). https://doi.org/10.1007/BF00645968
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DOI: https://doi.org/10.1007/BF00645968