Beaming, magnetization and dynamics of Gamma-Ray Burst jets
Thursday 22 January, 2:30 pm, Curia II
Davide Lazzati (IoA, Cambridge UK)
lazzati@ast.cam.ac.uk

Recent polarimetric observations have allowed a deeper insight in the structure of Gamma-Ray Burst outflows and the geometry of the embedded magnetic field. The old paradigm of a uniform baryon-dominated jet with a well-defined beaming angle had to be abandoned in favor of a more complex scenario, in which the magnetic field has a non negligible degree of alignment and the energy of the outflow is more concentrated in its core. I will discuss the theoretical understanding of this issues and the observational evidences at hand, pointing out also the future direction that will allow us to gain a deeper understanding of these interesting issues.