MG12 - Talk detail |
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Participant |
Lazzati, Davide | |
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Institution |
North Carolina State University - 2401 Stinson Drive - Raleigh - NC - USA | |
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Session |
Talk |
Abstract |
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GRB3 |
GRB jets and their interaction with the progenitor star |
Long-duration GRBs are known to be associated to massive progenitor stars. This association has fundamental consequences on the dynamics of the GRB jet and its radiative properties. With the aid of state of the art numerical simlations I will show that GRB jets associated to massive stars are very different from jets expanding in vacuum. I will discuss the implications of this result for the radiative efficiency of long duration GRBs, the associated radiation mechanisms and address the prospect of comparing long and short GRB properties. I will finally discuss the results in light of recent Fermi high energy observations. |