End-to-end modelling of jets from binary neutron star mergers*

Onsetting the multi-messenger era with gravitational wave sources, the GW170817 event proved to be fundamental in addressing many open questions related to binary neutron star (BNS) mergers, demonstrating in particular that such physical systems can power short gamma-ray bursts (SGRBs). To understand the mechanisms behind the production of the corresponding relativistic jets, it is crucial to consistently model, via numerical simulations, the different phases involved, i.e. inspiral, merger, jet production, break-out, and further jet propagation. In this talk, I will present the first jet-launching BNS merger simulation performed with our general relativistic (GR) magnetohydrodynamic (MHD) code "Spritz". Then, I will introduce the procedure we developed to hand-off the outcome of BNS merger simulations into the special relativistic MHD code "PLUTO" and show how the application of such a procedure to our jet-launching model allows us to consistently follow the further jet evolution on much larger temporal and spatial scales, obtaining the first end-to-end description.