The Gamma-Ray Blazar PKS 0208-512, a Multi-Wavelength Investigation
  The gamma-ray blazar PKS 0208-512 has shown strong periods of flaring, at all frequencies from radio to gamma-ray. This has led to its inclusion in the TANAMI project, which tracks the jets of southern AGN using VLBI as well as supporting flux density monitoring programs. Time series analysis of the light curves generated by such monitoring is presented and discussed and VLBI maps of the source are used to show the evolution in the jet. A frequency dependent lag is observed between flaring at different radio frequencies which does not appear to correspond to purely optical depth effects. Major flaring at gamma-ray frequencies appears to be preceded by a new component in the jet seen in our VLBI data. 
J. M. Blanchard, J. E. J. Lovell, J. Dickey, R. Ojha, M. Kadler, R.   Nesci, P. G. Edwards, J. Stevens, M. Dutka, C. Muller,...
astro-ph.HE