The Energetic Gamma Ray Experiment Telescope (EGRET) on the Compton Gamma Ray Observatory ( CGRO ) has so far detected 51 blazars during phases 1, 2, and 3, and cycle 4 of the CGRO mission. We present here a summary of these observations, including flux variations and spectra of the blazars. The high luminosities and time variations seen in the gamma-ray data indicate that gamma rays are an important component of the relativistic jet thought to characterize blazars.
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Mukherjee et al. (1997) studied this question.