AGILE monitoring of the microquasar Cygnus X-3
  AGILE data on Cygnus X-3 are reviewed focussing on the correlation between the production of gamma-ray transient emission and spectral state changes of the source. AGILE clearly establishes a relation between enhanced gamma-ray emission and the "quenched" radio/hard X-ray states that precede in general major radio flares. We briefly discuss the theoretical implications of our findings. 
G. Piano, A. Bulgarelli, M. Tavani and V. Vittorini (for the AGILE   Team), M. McCollough, G. Pooley, S. Trushkin
astro-ph.HE