6533b823fe1ef96bd127ea55

RESEARCH PRODUCT

COS B observation of high-energy γ radiation from 3C273

Jacques PaulB. SaccoJ. L. MasnouB. N. SwanenburgR. D. WillsK. BennettG. F. BignamiGottfried KanbachP. A. CaraveoL. ScarsiH. A. Mayer-hasselwanderW. Hermsen

subject

PhysicsRange (particle radiation)MultidisciplinaryGamma rayQuasarAstrophysicsLuminous intensityGamma-ray astronomyErgAstronomical spectroscopyLuminosity

description

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.

https://doi.org/10.1038/275298a0