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Long gamma ray bursts (LGRBs) are associated to the collapse of a massivestar and the formation of a relativistic jet. As the jet propagates through thestar, it forms an extended, hot cocoon. The dynamical evolution of thejet/cocoon system and its interaction with the environment has been studiedextensively both analytically and numerically. On the other hand, the roleplayed by the supernova (SN) explosion associated with LGRBs in determining theoutcome of the system has been barely considered. In this paper, we discuss thelarge landscape of outcomes resulting from the interaction of the SN, jet andcocoon. We show that the outcome depends mainly on three timescales: the timesfor the cocoon and supernova shock wave to break through the surface of theprogenitor star, and the time needed for the cocoon to engulf completely theprogenitor star. The delay between the launch of the SN shock moving throughthe progenitor star and the jet can be related to these three timescales.Depending on the ordering of these time scales, the jet-cocoon might propagateinside the SN ejecta or the other way around, and the outcome for theproperties of the explosion would be different. We discuss the imprint of thecomplex interaction between the jet-cocoon and the supernova shock on theemergent thermal and non-thermal radiation.

The large landscape of supernova, GRB and cocoon interactions