GRB 211211A: The Case for an Engine Powered over r-Process Powered Blue Kilonova

Hamid Hamidani, Masaomi Tanaka, Shigeo S. Kimura +2

The recent Gamma-Ray Burst (GRB) GRB 211211A provides the earliest ($\sim 5$ h) data of a kilonova (KN) event, displaying bright ($\sim 10^{42}$ erg s${}^{-1}$) and blue early emissio…