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GRB-SN Report Summary

Project ID: 279369
Funded under: FP7-IDEAS-ERC
Country: Israel

Final Report Summary - GRB-SN (The Gamma Ray Burst – Supernova Connectionand Shock Breakout Physics)

Long gamma ray bursts (long GRBs) and core-collapse supernovae (CCSNe) are two of the most spectacular explosions in the Universe. They are a focal point of research for many reasons. They are extreme natural laboratories for fundamental physics. They have a major impact on their environments, shaping stellar and galaxy evolution. In addition, their emissions probe intervening physical environments and is used for cosmological studies. Nevertheless, despite considerable effort during the last several decades, there are still many fundamental open questions regarding their physics.
Long GRBs and CCSNe are related. We know that they are both an outcome of a massive star collapse, where in some cases, such collapse produces simultaneously a GRB and a supernova (SN). However, we do not know how a single stellar collapse can produce these two apparently very different explosions. The GRB-SN connection raises many questions, but it also offers new opportunities to learn about the two types of explosions.
This project focuses on the connection between CCSNe and GRBs, and on the physics of shock breakout. Shock breakouts play a fundamental role in this connection and therefore. In this project we develop the theory of relativistic and Newtonian shock breakout and study the propagation of relativistic jets inside stars. We accomplish that through a set of interrelated projects that carefully combine analytic calculations and numerical simulations. The results obtained so far provide pieces on the way to construct the first model of a GRB and a SN that are simultaneously produced in a single star. They also provide new insights into long GRBs and CCSNe in general.

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