Abstract
THE discovery of a high-energy γ-ray source at α(1950) = 12h 29 min±6 min, δ(1950)= +3°±1.5° is reported here. Arguments are given for the identification with 3C273. If this identification is correct, the γ-ray luminosity of 3C273 in the energy range 50–500 MeV is 2×1046 erg s−1 for H0 = 60 km s−1 Mpc−1.
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SWANENBURG, B., BENNETT, K., BIGNAMI, G. et al. COS B observation of high-energy γ radiation from 3C273. Nature 275, 298 (1978). https://doi.org/10.1038/275298a0
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DOI: https://doi.org/10.1038/275298a0
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