Evolutionary relationship between the gamma-ray flares and millimeter waveoutbursts in PKS 0528+134

During the period of 1991-1993 two strong high energy gamma-ray flares were observed by the Compton Gamma Ray Observatory in the flat spectrum radio s ource PKS 0528+134. They were associated with strong mm-radio outbursts wit h a few months time-delays. In this paper the spectral energy distributions (SED) of the radiations in the gamma-hard X-ray and the IR-optical bands a re analysed. It is shown that the high energy gamma-ray radiation may be du e to the inverse Compton scattering of the ambient UV and soft X-ray photon s by the relativistic electrons in the jet. Basing on the comparison betwee n the properties of the synchrotron radiation of the gamma-ray source and t he spectral evolution of the mm-radio outbursts, the evolutional relationsh ip between the gamma-ray emitting blobs and the mm-radio emitting blobs is discussed.