Funnel Leakage of the Wien Fireball in the Early Nebula after a Binary Neutron Star Merger
The paper investigates how a newborn neutron star's rotational energy is released into its surrounding ejecta after a binary merger, forming an early nebula called a Wien fireball. It shows that energy loss through the funnel leakage of this fireball dominates over other losses initially. This leakage produces quasi-thermal radiation with high luminosity, suggesting it could explain the extended emission seen in short gamma-ray bursts.