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   PR # 11157
    3C279 is a typical OVV quasar which exhibits high variability in rdio
    through gamma-rays.The X-ray spectrum is of power law type with index
    of about 1.7. The correlated flux variation of X-rays with radio flux
    at 37 GHz will be a strong support for the SSC model. However, high
    gamma-ray flux observed simultanouely with Ginga by GRO can not be
    interpreted by this model.The gamma-rays showed variability of factor
    of 5 during two weeks of GRO exposure. But corresponding Ginga variab
    ility was uncertain because of short observation time of Ginga.The se
    arching for correlated variation will be crucial to establish the
    emission mechanism of gamma-ray. 3C273 has been thought to include
    the radiation of similar process of small scale to 3C279.

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