MG13 - Talk detail |
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Participant |
Ghirlanda, Giancarlo | |||||||
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Institution |
INAF-Osservatorio Astronomico di Brera - Via E. Bianchi 46 - Merate - - Italy | |||||||
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Session |
GRB4 |
Accepted |
Yes |
Order |
3 |
Time |
14:55 - 15:15 | |
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Talk |
Oral abstract |
Title |
Interpretation of the spectral energy correlations in GRBs: the role of Gamma_0 and theta_jet | |||||
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Abstract |
I will present recent works on the spectral energy correlations in Gamma Ray Bursts. A unifying interpretative scheme arises if other fundamental parameters of GRBs (the bulk Lorentz factor Gamma_0 and the jet opening angle theta_jet) are allowed to play the game. In particular the spectral energy correlations involving the isotropic energetics/luminosities can be explained as sequence of Gamma_0, while the correlation with the true GRB energy requires a relation between these two fundamental parameters of GRBs which meets the prediction of jet acceleration theories. Recent observational analysis and numerical simulations suggest that GRBs have characteristic values of theta_jet and Gamma_0 and that a relation between them should be present. |
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