Abstract
RECENT observations at nine frequencies between 38 and 3,200 Mc/s have been compiled and used to determine the spectra of 160 discrete radio sources1. Although, in general, the spectra can be represented by a simple power law, at least for frequencies below 1,420 Mc/s, in a few cases the spectral index shows a considerable dependence on frequency.
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KELLERMANN, K., LONG, R., ALLEN, L. et al. A Correlation between the Spectra of Non-thermal Radio Sources and their Brightness Temperatures. Nature 195, 692–693 (1962). https://doi.org/10.1038/195692a0
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DOI: https://doi.org/10.1038/195692a0
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