Speaker
Description
The simultaneous observation of the gravitational-wave and electromagnetic-wave signals from the event provides a great opportunity to study physics in extreme conditions. The quantitative and accurate prediction of the signals is the key to maximizing the scientific returns from the observation, and dramatic progress has been achieved in the field since the first detection of a binary neutron star merger, GW170817. For this purpose, conducting a study based on numerical simulations consistently starting from the merger to the phase of EM emission is a useful approach to link the observables that should be related to each other. In this talk, I will discuss our recent work toward realistic modeling of electromagnetic counterparts, in which the long-term hydrodynamics evolution of ejecta and the lightcurve for the obtained ejecta profile are studied consitetly employing the outflow data of numerical relativity simulations and performing relativistic-hydrodynamics and radiative-transfer simulations.
