Toward a self-consistent modeling of short GRB jets for the interpretation of 170817-like multimessenger events

by Andrea Pavan (INAF/OAPD)

Thursday 6 Jul 2023, 11:30 → 12:30 Europe/Rome

Sala Jappelli (Osservatorio Astronomico di Padova)

The multimessenger event of August 17, 2017, demonstrated that binary neutron star (BNS) systems can merge and power collimated relativistic outflows (jets) that are compatible with the prompt and afterglow emission of short gamma-ray bursts (GRBs). However, many open questions remain about the physical mechanisms behind this connection, calling for advanced numerical modeling of the merger and jet propagation stages up to the formation of electromagnetic signals. In this talk, I will present results of three-dimensional relativistic (magneto)hydrodynamic short GRB jet simulations that we carried out by employing, for the first time, self-consistent initial conditions for the jet propagation environment directly imported from the outcome of general-relativistic BNS merger simulations, also carried out by our group. The results presented will soon allow us to make direct and more solid comparisons with the afterglow data of 170817, establishing a powerful new approach for the interpretation of similar events in the future.

 

Link alla videochiamata: https://meet.google.com/vap-tnxs-soq
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