Abstract
Without assuming the existence of two populations of radio sources, the counts of vs frequency, spectral index vs flux density, and counts vs spectral index dependences have been derived. An assumption —with arguments to support it—is made that most extragalactic radio sources belong to the class of doubles whose visible parameters depend on their spatial orientation being relative to the observer.
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Amirkhanyan, V.R. Frequency-dependence of the statistics of radio sources. Astrophys Space Sci 108, 125–136 (1985). https://doi.org/10.1007/BF00650124
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DOI: https://doi.org/10.1007/BF00650124